Page 1 Getting Started Introduction Safety information SITRANS P Description Installing/mounting Pressure transmitter SITRANS P320/P420 with 4 to 20 Connecting mA/HART Operating Commissioning Operating Instructions Parameter assignment Functional Safety Service and maintenance Diagnostics and troubleshooting Technical data Dimension drawings Product documentation and...
Page 2 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
Page 3: Table Of Contents
Table of contents Getting Started ............................11 Commissioning the device without display................11 Commissioning the device with display..................12 Introduction..............................15 Purpose of this documentation....................15 Scope of validity of this document..................15 Document history ........................15 Product compatibility ......................16 Checking the consignment.....................16 Security information .......................16 Transportation and storage ....................17 Notes on warranty ........................17 Safety information............................19 Precondition for use .......................19...
Page 4 Table of contents Remote seal and differential pressure flow measuring systems ..........40 4.6.1 Remote seal ...........................40 4.6.2 Differential pressure - flow measuring systems ..............40 4.6.3 Remote seals and primary element for devices with functional safety........41 Installing/mounting............................43 Basic safety instructions......................43 5.1.1 Installation location requirements...................46 5.1.1.1 Use in maritime deployment....................46...
Page 5 Table of contents Locking the device .........................82 7.4.1 Enable write protection with jumper ..................82 7.4.2 Enable user PIN ........................83 7.4.3 Enabling button lock.......................84 Commissioning ............................87 Basic safety instructions......................87 Switching on the supply voltage.....................88 Commissioning the device without display................89 Commissioning the device with display..................90 Application examples ......................92 8.5.1 Gauge pressure, absolute pressure from differential pressure series, and absolute...
Page 6 Table of contents 9.2.10 Upper fault current [12] ......................125 9.2.11 Lower saturation limit [13] ....................125 9.2.12 Upper saturation limit [14] ....................126 9.2.13 SV selection [15] ........................127 9.2.14 Units [16] ..........................127 9.2.14.1 Level units [16] ........................128 9.2.14.2 Volume units [16] .........................128 9.2.14.3 Volume flow units [16] ......................128 9.2.14.4...
Page 7 Table of contents 9.3.5.1 Introduction ..........................149 9.3.5.2 "Custom units" parameter ....................150 9.3.5.3 Set customized characteristic curve..................150 9.3.6 Sensor calibration ........................151 9.3.7 Digital-to-analog converter trim (DAC trim) ................152 9.3.8 Diagnostics functions ......................154 9.3.8.1 Limit monitoring and event counter ..................154 9.3.8.2 Trend log ..........................157 9.3.8.3 Operating hours counter ......................158 Functional Safety............................159...
Page 8 Table of contents 11.5 Disposal ..........................188 Diagnostics and troubleshooting ......................189 12.1 Device status symbols ......................189 12.2 Diagnostic messages ......................192 12.3 Troubleshooting ........................197 Technical data ............................199 13.1 Input .............................199 13.1.1 Gauge pressure ........................199 13.1.2 Gauge pressure with front-flush diaphragm .................200 13.1.3 Gauge pressure from the differential pressure series ............201 13.1.4 Absolute pressure from the gauge pressure series .............202...
Page 9 SITRANS P320/P420 for gauge pressure and absolute pressure from the gauge pressure series........................243 14.2 SITRANS P320/P420 for differential pressure, gauge pressure, flow and absolute pressure from the differential pressure series..............245 14.3 SITRANS P 320/P420 for level ....................247 14.4 SITRANS P320/P420 (front-flush) ..................248 14.4.1 Note 3A and EHDG......................249 14.4.2 Connections as per EN and ASME ..................249...
Page 10 Table of contents SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 11: Getting Started
Getting Started Commissioning the device without display Introduction In this section, you will learn how to commission the device step-by-step. Before you start, please read the following safety information: ● General safety information (Page 19) ● Basic safety information: Installing/mounting (Page 43) ●...
Page 12: Commissioning The Device With Display
Getting Started 1.2 Commissioning the device with display 4. Open the cover of the buttons: Figure 1-1 Top view 5. Operate the buttons as follows: Apply lower range value (with pressure applied) Hold down the button for 3 seconds. Apply upper range value (with pressure applied) Hold down the button for 3 seconds.
Page 13 Getting Started 1.2 Commissioning the device with display Procedure 1. Mount the device. Installing (Page 47) Installation (level) (Page 51) 2. Connect the device. Connecting the device (Page 68) 3. Switch on the supply voltage. Switching on the supply voltage (Page 88) 4.
Page 14 Getting Started 1.2 Commissioning the device with display See also Diagnostics and troubleshooting (Page 189) SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 15: Introduction
Introduction Purpose of this documentation These instructions contain all information required to commission and use the device. Read the instructions carefully prior to installation and commissioning. In order to use the device correctly, first review its principle of operation. The instructions are aimed at persons mechanically installing the device, connecting it electronically, configuring the parameters and commissioning it, as well as service and maintenance engineers.
Page 16: Product Compatibility
● Do not use damaged or incomplete devices. See also Return procedure (Page 188) Security information Siemens provides products and solutions with industrial security functions that support the secure operation of plants, systems, machines and networks. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 17: Transportation And Storage
Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to cyber...
Page 18 Introduction 2.8 Notes on warranty The content reflects the technical status at the time of publishing. Siemens reserves the right to make technical changes in the course of further development. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 19: Safety Information
Safety information Precondition for use This device left the factory in good working condition. In order to maintain this status and to ensure safe operation of the device, observe these instructions and all the specifications relevant to safety. Observe the information and symbols on the device. Do not remove any information or symbols from the device.
Page 20: Conformity With European Directives
Safety information 3.1 Precondition for use 3.1.3 Conformity with European directives The CE mark on the device is a sign of conformity with the following European directives: Electromagnetic compatibility Directive of the European Parliament and of the Council on the harmonization of the laws of the Member States relating to electromagnetic compatibility 2014/30/EU Atmosphère explosible ATEX...
Page 21: Requirements For Special Applications
If you need additional information not covered by these instructions, contact your local Siemens office or company representative. Note Operation under special ambient conditions...
Page 22 Safety information 3.3 Use in hazardous areas WARNING Use in hazardous area Risk of explosion. ● Only use equipment that is approved for use in the intended hazardous area and labeled accordingly. ● Do not use devices that have been operated outside the conditions specified for hazardous areas.
Page 23 Safety information 3.3 Use in hazardous areas WARNING Incorrect material for the diaphragm in Zone 0 Risk of explosion in the hazardous area. If operated with intrinsically safe supply devices of category "ib" or devices of the flameproof enclosure version "Ex d" and simultaneous use in Zone 0, pressure transmitter explosion protection depends on the tightness of the diaphragm.
Page 24 Safety information 3.3 Use in hazardous areas SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 25: Description
Description Area of application Depending on the variant, the pressure transmitter measures corrosive, non-corrosive and hazardous gases, vapors and liquids. You can use the pressure transmitter for the following measuring tasks: ● Gauge pressure ● Absolute pressure ● Differential pressure With the appropriate configuration and the necessary add-on parts (e.g.
Page 26 Description 4.1 Area of application Level This version with mounting flange measures the level of non-corrosive, corrosive and hazardous liquids in open and closed containers. The nominal size of the mounting flange is DN 40 to DN 125 or 1 1/2" to 5". The negative connection of the measuring cell is kept open when measuring the level of open containers.
Page 27: Structure
Description 4.2 Structure Structure Depending on the customer-specific order, the device comprises different parts. ① ⑨ Cover over buttons and nameplate with general information Locking screw for the cover over the buttons ② ⑩ Cover with glass pane (optional) Cover (rear) for electrical terminal compart‐ ment ③...
Page 28: Nameplate Layout
Description 4.3 Nameplate layout Nameplate layout Nameplate with general information The nameplate with the article number and other important information, such as design details and technical data, is located on the cover over the buttons. ① ⑦ Article number (MLFB number) Permitted ambient temperature for the hazardous area of the corresponding tem‐...
Page 29 Description 4.3 Nameplate layout Nameplate with approval information The nameplate with approval information is located on the front of the enclosure. Characteristics of the hazardous area Type of protection Group (gas, dust) Maximum surface temperature (temperature class) Device protection level Figure 4-3 Example ATEX Figure 4-4...
Page 30: Functional Principle
Description 4.4 Functional principle Nameplate with information on the remote seals The nameplate with information on the remote seals is located on the back of the enclosure. ① ⑦ Diaphragm remote seals of sandwich type Nominal diameter/nominal pressure: 4 inch, 50 mm tube length, CLASS 600 ②...
Page 31: Electronics
Description 4.4 Functional principle 4.4.1 Electronics ① ⑧ Measuring cell sensor Buttons ② ⑨ Measuring amplifier Display ③ ⑩ Analog-to-digital converter Connection for external ammeter ④ ⑪ Microcontroller EEPROM ⑤ Digital-to-analog converter Output current ⑥ EEPROM Auxiliary power ⑦ HART modem Mode of operation ①...
Page 32: Measuring Cell
Description 4.4 Functional principle ● You can make an uninterrupted current measurement with a low resistance ammeter at the ⑩ connection ● The measuring cell-specific data, electronics data and parameter assignment data are ⑥ saved in two EEPROM modules. The first EEPROM module is linked to the measuring ⑪...
Page 33: Measuring Cell For Gauge Pressure
Description 4.4 Functional principle In the following sections, the process variable to be measured is generally called inlet pressure. WARNING Destruction of the seal diaphragm Danger of injury or damage to device If the seal membrane is destroyed, the sensor may also be destroyed. If the seal membrane is destroyed, no reliable measured values can be output.
Page 34: Measuring Cell For Gauge Pressure, Front-Flush Membrane
Description 4.4 Functional principle 4.4.2.2 Measuring cell for gauge pressure, front-flush membrane ① ⑤ Reference pressure opening Filling liquid ② ⑥ Measuring cell Gauge pressure sensor ③ Process connection Inlet pressure ④ Seal diaphragm Figure 4-8 Function chart of the measuring cell for gauge pressure, flush mounted diaphragm ⑥...
Page 35: Measuring Cell For Absolute Pressure, Front-Flush Membrane
Description 4.4 Functional principle ⑤ ● The inlet pressure (p ) is transferred to the absolute pressure sensor via the seal ③ ④ diaphragm and the fill fluid , displacing its measuring diaphragm. ● The displacement changes the resistance of the four piezoresistors (bridge circuit) of the absolute pressure sensor.
Page 36: Measuring Cell For Absolute Pressure From The Differential Pressure Series
Description 4.4 Functional principle 4.4.2.5 Measuring cell for absolute pressure from the differential pressure series ① ⑥ Pressure cap Overload diaphragm ② ⑦ Seal diaphragm on the measuring cell Measuring cell filling liquid ③ ⑧ O-ring Reference pressure ④ Measuring cell body Pressure input variable ⑤...
Page 37: Measuring Cell For Differential Pressure And Flow Rate
Description 4.4 Functional principle 4.4.2.6 Measuring cell for differential pressure and flow rate ① ⑥ Inlet pressure P Filling liquid ② ⑦ Pressure cap Seal diaphragm ③ ⑧ O-ring Inlet pressure P ④ ⑨ Measuring cell body Differential pressure sensor ⑤...
Page 38: Measuring Cell For Level
Description 4.5 System configuration 4.4.2.7 Measuring cell for level ① ⑦ Inlet pressure P Overload diaphragm ② ⑧ Seal diaphragm on the measuring cell Inlet pressure P ③ ⑨ Pressure cap Filling liquid of the measuring cell ④ ⑩ O-ring Capillary tube with the fill fluid of the mounting flange ⑤...
Page 39 Description 4.5 System configuration System communication Communication is via the HART protocol, using: ● HART Communicator (load 230 ... 1100 Ω) ● PC with HART modem on which appropriate software is installed, e.g. SIMATIC PDM (load 230 ... 600 Ω) ●...
Page 40: Remote Seal And Differential Pressure Flow Measuring Systems
Application examples for differential pressure and flow with primary elements, refer to section Differential pressure and flow rate (Page 94). You can find additional information on primary elements in the associated instructions under: Manuals for SITRANS FP (https://support.industry.siemens.com/cs/ww/en/ps/26040/man) SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 41: Remote Seals And Primary Element For Devices With Functional Safety
Description 4.6 Remote seal and differential pressure flow measuring systems 4.6.3 Remote seals and primary element for devices with functional safety Remote seals and primary elements were not included in the evaluation of the devices with respect to functional safety. If you use a remote seal or a primary element, make sure that you include the associated safety characteristic values when evaluating your device with respect to functional safety.
Page 42 Description 4.6 Remote seal and differential pressure flow measuring systems SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 43: Installing/Mounting
Installing/mounting Basic safety instructions DANGER Pressure applications Danger to personnel, system and environment will result from improper disassembly. ● Never attempt to loosen, remove, or disassemble process connection while vessel contents are under pressure. WARNING Wetted parts unsuitable for the process media Risk of injury or damage to device.
Page 44 Installing/mounting 5.1 Basic safety instructions WARNING Incorrect material for the diaphragm in Zone 0 Risk of explosion in the hazardous area. If operated with intrinsically safe supply devices of category "ib" or devices of the flameproof enclosure version "Ex d" and simultaneous use in Zone 0, pressure transmitter explosion protection depends on the tightness of the diaphragm.
Page 45 ● Prevent severe external stresses and loads from acting on the device. Note Material compatibility Siemens can provide you with support concerning selection of sensor components wetted by process media. However, you are responsible for the selection of components. Siemens accepts no liability for faults or failures resulting from incompatible materials.
Page 46: Installation Location Requirements
Installing/mounting 5.1 Basic safety instructions 5.1.1 Installation location requirements WARNING Insufficient air supply The device may overheat if there is an insufficient supply of air. ● Install the device so that there is sufficient air supply in the room. ● Observe the maximum permissible ambient temperature. Refer to the information in the section Technical data (Page 199).
Page 47: Proper Mounting
Installing/mounting 5.2 Installing 5.1.2 Proper mounting WARNING Incorrect mounting at Zone 0 Risk of explosion in hazardous areas. ● Ensure sufficient tightness at the process connection. ● Observe the standard IEC/EN 60079-14. NOTICE Incorrect mounting The device can be damaged, destroyed, or its functionality impaired through improper mounting.
Page 48 Installing/mounting 5.2 Installing Lay the pressure tubing with a constant gradient to the pressure sampling point so that any gas pockets can escape in the main line. Mounting location Verify that the mounting location meets the following conditions: ● Accessible ●...
Page 49: Fastening With The Mounting Bracket
Installing/mounting 5.2 Installing 3. For insulated systems, ensure that you insulate the device as far as possible to the lower edge of the enclosure: In this way, you avoid a defect in the device or the loss of explosion protection for Ex devices. You can find the permissible temperature values in the section Technical data (Page 199).
Page 50: Mounting Hygienic Version
Installing/mounting 5.2 Installing Mount the pressure transmitter as follows: Example 2: Pipe mounting of pressure transmitter (differential pressure series) The mounting bracket for the differential pressure series includes, among other things: ● 4 screws ● One pipe clamp with nuts ●...
Page 51: Installation (Level)
Installing/mounting 5.3 Installation (level) Figure 5-2 Incorrect installation ● Ensure that the length of the dead space at the end of the process connection is smaller than its diameter. ● To ensure optimal cleaning of the process plant, install the process connection without offset (flush-mounted on inside) in the plant.
Page 52: Mounting On The Container
Installing/mounting 5.3 Installation (level) Procedure To install the pressure transmitter for level, proceed as follows: 1. Attach the seal to the container's mating flange. Ensure that the seal is centrally positioned and that it does not restrict the movement of the flange's seal diaphragm in any way.
Page 53 Installing/mounting 5.3 Installation (level) Mounting on closed container When taking measurements in a closed container without or with little condensate formation, the negative pressure line is not filled. Lay the line in such a way that condensation pockets do not form. If required, you need to install a condensation container below the negative pressure line of the pressure transmitter.
Page 54: Installation With Remote Seal
Installing/mounting 5.4 Installation with remote seal To compensate the liquid column on the minus side, reset the zero point. Formula: Lower range value: Δp = g · (h · ρ - h · ρ') Upper range value: Δp = g · (h ·...
Page 55 Installing/mounting 5.4 Installation with remote seal ● Do not cause damage to the remote separating membrane; scratches on the remote separating membrane, e.g. due to sharp-edged objects, are the main starting points for corrosion. ● Select suitable gaskets for sealing. ●...
Page 56: Remote Seal With Capillary Line
Installing/mounting 5.4 Installation with remote seal 5.4.1 Remote seal with capillary line Notes ● Do not transport the measuring assembly (pressure transmitter, flange and capillary line) to the capillary line. ● Do not bend the capillary lines. Otherwise there may be a leakage risk and the set-up time of the measuring system is increased.
Page 57 Installing/mounting 5.4 Installation with remote seal Start of scale value: = ρ * g * H + ρ * g * H Full-scale value: = ρ * g * H + ρ * g * H Installation type B: Pressure transmitter below the measuring point ≤...
Page 58 Installing/mounting 5.4 Installation with remote seal Installation types for absolute pressure measurements (closed containers) Start of scale value: + ρ * g * H start Full-scale value: + ρ * g * H Installation type C Start of scale value: + ρ...
Page 59 Installing/mounting 5.4 Installation with remote seal Installation type for differential pressure and flow rate measurements Start of scale value: - ρ * g * H start Full-scale value: - ρ * g * H Installation type D Start of scale value Full-scale value Initial pressure in the container start...
Page 60 Installing/mounting 5.4 Installation with remote seal ≤ 7 m (23 ft), for halocarbon oil, however only H1 ≤ 4 m (13.1 ft) Start of scale value: = ρ * g * H - ρ * g * H Full-scale value: = ρ...
Page 61: Installing Electrical Connections And Cable Entries
Installing/mounting 5.6 Rotating the display Start of scale value Full-scale value ρ Density of the process medium in the container ρ Density of the filling oil in the capillary line of the remote seal Acceleration due to gravity Lower filling level Upper filling level Gland distance Distance container flange to pressure transmitter...
Page 62 Installing/mounting 5.6 Rotating the display 4. Remove the display from the holder. 5. Leave the display cable plugged into the electronics. 6. Rotate the display to the desired position. 7. Press the display into the holder until it engages. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 63: Rotating The Enclosure
Installing/mounting 5.7 Rotating the enclosure Rotating the enclosure Introduction To make the device easier to operate in any mounting position, you have the option of adjusting the position of the enclosure within a range of 360°. ① Retaining screw ① One retaining screw for the aluminum enclosure and two retaining screws (front and back) for the stainless steel enclosure prevent that the flat ribbon cable is damaged while rotating the...
Page 64: Removing
Installing/mounting 5.8 Removing Rotating the stainless steel enclosure 1. Loosen the front retaining screw by half a rotation. 2. Loosen the back retaining screw by half a rotation. 3. Rotate the enclosure to the desired position (but no further than the end stop). 4.
Page 65: Connecting
Connecting Basic safety instructions WARNING Unsuitable cables, cable glands and/or plugs Risk of explosion in hazardous areas. ● Use only cable glands/plugs that comply with the requirements for the relevant type of protection. ● Tighten the cable glands in accordance with the torques specified in Technical data (Page 199).
Page 66 Connecting 6.1 Basic safety instructions WARNING Lack of equipotential bonding Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding. For devices of intrinsic safety "db", "ec", "tb" or "tc" which are operated in a non-intrinsically safe circuit, observe the following: ●...
Page 67 Connecting 6.1 Basic safety instructions WARNING Incorrect selection of type of protection Risk of explosion in hazardous areas. This device is approved for various types of protection. 1. Select an intrinsic safety type of protection "ia", "ib", "ic" or non-intrinsic safety "db", "tb", "tc", "ec".
Page 68: Connecting The Device
Connecting 6.2 Connecting the device Note Electromagnetic compatibility (EMC) You can use this device in industrial environments, households and small businesses. For metal housings there is an increased electromagnetic compatibility compared to high- frequency radiation. This protection can be increased by grounding the housing, see Technical data (Page 199).
Page 69: Connecting The Device
Connecting 6.2 Connecting the device ① 1. Use a 3 mm Allen key to loosen the safety catch ② 2. Unscrew the cover of the electrical cable compartment 6.2.2 Connecting the device - Test + ① ⑥ Supply unit with integrated load Safety catch ②...
Page 70 Connecting 6.2 Connecting the device ⑧ 1. Connect the device to the system via the existing protective ground connection observing the torques. – Use a cable with a diameter of 1 … 4 mm ③ 2. Insert the connecting cable through the cable gland ④...
Page 71: Closing The Device
Connecting 6.3 Connect the Han cable socket to the cable 6.2.3 Closing the device ① ⑤ Cover over buttons Blanking plug ② ⑥ Cable gland Safety catch (front) ③ ⑦ Safety catch (back) Cover (front) ④ Cover (rear) for electrical terminal compartment Figure 6-4 View of the pressure transmitter: Left: Back right: Front view ④...
Page 72: Connect M12 Cable Socket To The Cable
Connecting 6.4 Connect M12 cable socket to the cable Requirement ● The terminal area of the cable socket is suitable for cables with diameters ranging from 6 to 12 mm. ● These cables use stranded wires with 1 mm as single conductors ("+", "-" and ground). ●...
Page 73 Connecting 6.4 Connect M12 cable socket to the cable 3. Twist the shield. 4. Thread the shield in the insulating sleeve. ② 5. Draw 8 mm of shrink sleeve over the cable, wires and shield up to the reference edge 6.
Page 74 Connecting 6.4 Connect M12 cable socket to the cable Shield Shield Middle contact of the cable socket not connected SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 75: Operating
Operating Introduction You operate the device using the buttons. If you have a device with a display, you can view the measured values, parameter values and messages. If you have a device without a display, you also have several functions available: Commissioning the device without display (Page 89) Buttons The four buttons are located below the cover:...
Page 76: Operating The Device With Display
Operating 7.2 Operating the device with display Operating the device with display 7.2.1 Navigating in the views You navigate in the views with the Buttons (Page 75) buttons: Views Buttons Measurement view After the initialization, the measurement view is displayed. 1.
Page 77: Display Of Measured Values
Operating 7.2 Operating the device with display The bar display shows the following information: ● The position of a measured value within the set measuring span (e.g. pressure). ● The position of the temperature value within the sensor limits. ● The scaling of the process values calculated from the pressure value (e.g. volume flow). 7.2.2.1 Display of measured values The following measured values are always displayed:...
Page 78: Navigating In The Measurement View
Operating 7.2 Operating the device with display 7.2.2.2 Navigating in the measurement view Requirement You have disabled the button lock. Disabling button lock (Page 135) Procedure 1. Use the buttons to navigate in the measurement view. 2. To switch to the parameter view, press the button.
Page 79 Operating 7.2 Operating the device with display Parame‐ Parameter name on Meaning ter ID the display SQRT POINT Application point for volume flow and mass flow (VSLN and MSLIN) (Page 119) ZERO POINT Zero point adjustment (Page 119) APPLY LRV Apply lower range value (with pressure applied) (Page 122) APPLY URV Apply upper range value (with pressure applied) (Page 122)
Page 80: Navigating In The Parameter View
Operating 7.2 Operating the device with display 7.2.3.2 Navigating in the parameter view Requirement The button lock is disabled. Disabling button lock (Page 135) Procedure 1. Use the buttons to navigate within the parameters. To navigate faster, keep the button pressed. After the last parameter, you jump to the first parameter, and vice versa.
Page 81: Changing Parameter Values
Operating 7.3 Remote operation 7.2.4.1 Changing parameter values Requirement The button lock is disabled. Disabling button lock (Page 135) Procedure 1. Navigate to the parameter view (Page 76). 2. Select the desired parameter with the button. Use the button to confirm. You are in the edit view.
Page 82: Locking The Device
Operating 7.4 Locking the device Locking the device The following options are available to lock the device: ● Enabling write protection using the jumper. (Page 82) ● Enabling write protection using the user PIN. (Page 138) ● Enabling write protection using the button lock. (Page 134) Write protection Sym‐...
Page 83: Enable User Pin
Operating 7.4 Locking the device 4. Remove the display from the holder. ① 5. Disconnect the cable of the display from the 4-pole connector Write protection is disabled (e.g. as factory set‐ Write protection is enabled ting) 7.4.2 Enable user PIN Requirement The User PIN is disabled.
Page 84: Enabling Button Lock
Operating 7.4 Locking the device Procedure 1. Navigate to the parameter view. Navigating in the views (Page 76) 2. Select the parameter "User PIN". 3. Use the button to confirm. The message "USER PIN ON" (User PIN enabled) appears for 2 seconds. Result The User PIN is activated after about 10 minutes or after a device restart.
Page 85 Operating 7.4 Locking the device Note For a device without display, you activate the button lock using remote operation. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 86 Operating 7.4 Locking the device SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 87: Commissioning
Commissioning Basic safety instructions DANGER Toxic gases and liquids Danger of poisoning when venting the device: if toxic process media are measured, toxic gases and liquids can be released. ● Before venting ensure that there are no toxic gases or liquids in the device, or take the appropriate safety measures.
Page 88: Switching On The Supply Voltage
Commissioning 8.2 Switching on the supply voltage WARNING Opening device in energized state Risk of explosion in hazardous areas ● Only open the device in a de-energized state. ● Check prior to commissioning that the cover, cover locks, and cable inlets are assembled in accordance with the directives.
Page 89: Commissioning The Device Without Display
Commissioning 8.3 Commissioning the device without display Procedure Switch on the supply voltage. ● Product name and firmware version appear briefly on the display. ● The measured values are shown on the display. For a device without a display, you read off the current output as follows: –...
Page 90: Commissioning The Device With Display
Commissioning 8.4 Commissioning the device with display 4. Open the cover of the buttons: Figure 8-1 Top view 5. Operate the buttons as follows: Apply lower range value (with pressure applied) Hold down the button for 3 seconds. Apply upper range value (with pressure applied) Hold down the button for 3 seconds.
Page 91 Commissioning 8.4 Commissioning the device with display Procedure 1. Mount the device. Installing (Page 47) Installation (level) (Page 51) 2. Connect the device. Connecting the device (Page 68) 3. Switch on the supply voltage. Switching on the supply voltage (Page 88) 4.
Page 92: Application Examples
Commissioning 8.5 Application examples Application examples 8.5.1 Gauge pressure, absolute pressure from differential pressure series, and absolute pressure from gauge pressure series 8.5.1.1 Commissioning in gaseous environments Requirement All valves are closed. Procedure Pressure transmitter above the pressure Pressure transmitter below the pressure sampling point sampling point ①...
Page 93: Commissioning With Steam Or Liquid
Commissioning 8.5 Application examples ④ 1. Open the shut-off valve for the test connection ② 2. Via the test connection of the shutoff valve , apply the pressure corresponding to the lower range value to the pressure transmitter. 3. Ensure that the lower range value corresponds to the desired value. Otherwise, correct the value.
Page 94: Differential Pressure And Flow Rate
Commissioning 8.5 Application examples ④ 1. Open the shut-off valve for the test connection ② 2. Via the test connection of the shutoff valve , apply the pressure corresponding to the lower range value to the pressure transmitter. 3. Ensure that the lower range value corresponds to the desired value. Otherwise, correct the value.
Page 95 Commissioning 8.5 Application examples Procedure Pressure transmitter above the differential Pressure transmitter below the differential pressure transducer pressure transducer ① ⑦ Pressure transmitter Blowout valves ② ⑧ Stabilizing valve Condensate vessels (optional) ③ ⑨ Differential pressure valves Differential pressure transducer (e.g. ④...
Page 96: Commissioning For Liquids
Commissioning 8.5 Application examples 8.5.2.2 Commissioning for liquids Requirement All valves are closed. DANGER Toxic liquids Danger of poisoning when the device is vented. If toxic process media are measured with this device, toxic liquids can escape when the device is vented.
Page 97 Commissioning 8.5 Application examples Procedure Pressure transmitter below the differential pres‐ Pressure transmitter above the differential pres‐ sure transducer sure transducer ① ⑦ Pressure transmitter Drain valves ② ⑧ Stabilizing valve Gas collector vessels (optional) ③ ④ ⑨ Differential pressure valves Differential pressure transducer ⑤...
Page 98: Commissioning With Vapor
Commissioning 8.5 Application examples ④ 9. Partially open the differential pressure valve until liquid escapes without bubbles. 10.Close the differential pressure valve. 11.Close the vent valve (sealing plug with vent valve) on the negative side of the pressure transmitter. ③ 12.Open the differential pressure valve with half a revolution.
Page 99 Commissioning 8.5 Application examples Procedure ① ⑦ Pressure transmitter Drain valves ② ⑧ Stabilizing valve Condensate pots ③ ⑨ Differential pressure valves Differential pressure transducer ④ ⑤ ⑩ Differential pressure lines Insulation ⑥ ⑪ Shut-off valves 3-way valve manifold ⑥ 1.
Page 100 Commissioning 8.5 Application examples 12.For the lower range value 0 bar, check the zero point (4 mA). ⑤ If the differential pressure lines have equally high condensate columns with the same temperature, the measurement result is error-free. Otherwise, repeat the zero-point adjustment.
Page 101: Parameter Assignment
Parameter assignment Overview of parameters and functions Introduction You can operate the device via local operation or remote operation (e.g. HART communicator, SIMATIC PDM). ● The parameters that you can reach over the device with a display are marked by the parameter ID.
Page 102 Parameter assignment 9.1 Overview of parameters and functions Current output SIMATIC PDM Device with display (lo‐ Device without display cal operation) (local operation) Set fault current "Settings > Current out‐ Select fault current [10] Commissioning the de‐ put" parameter group (Page 124) vice without display (Page 11)
Page 103 Parameter assignment 9.1 Overview of parameters and functions Calibration SIMATIC PDM Device with display (lo‐ Device without display cal operation) (local operation) Correct the zero point error Menu command "De‐ Zero point adjustment Commissioning the de‐ vice > Zero point ad‐ [07] (Page 119) vice without display justment"...
Page 104 Parameter assignment 9.1 Overview of parameters and functions Maintenance and diagnostics SIMATIC PDM Device with display (lo‐ Device without display cal operation) (local operation) Set peak values "Maintenance and di‐ agnostics > Peak val‐ Reset peak values ues" parameter group Menu command "De‐...
Page 105 Parameter assignment 9.1 Overview of parameters and functions Write protection SIMATIC PDM Device with display (lo‐ Device without display cal operation) (local operation) Restore user PIN Menu command "De‐ PIN recovery [26] vice > Security > PIN (Page 137) recovery" Enable and disable button lock "Security >...
Page 106: Parameter Assignment Over Device With Display
Parameter assignment 9.2 Parameter assignment over device with display Functional Safety The following additional functionality is available for devices with Functional Safety: Functional Safety SIMATIC PDM Device with display (lo‐ Device without display cal operation) (local operation) Enable and disable Functional Safety Menu command "De‐...
Page 107: Display Of The Pressure Units
Parameter assignment 9.2 Parameter assignment over device with display See also Pressure reference [33] (Page 143) 9.2.1.1 Display of the pressure units Certain units are displayed differently on the display and over remote operation. Example: Display of unit "mmH O" on the dis‐ play ①...
Page 108: Set Lower Range Value [02]/Set Upper Range Value [03]
Parameter assignment 9.2 Parameter assignment over device with display Procedure 1. Navigate to the parameter view. Navigating in the views (Page 76) 2. Select the "Pressure units" parameter [01]. 3. Press the button. 4. Select the desired unit with the button.
Page 109: Set Lower Range Value/Upper Range Value (Without Pressure Available)
Parameter assignment 9.2 Parameter assignment over device with display 9.2.2.3 Set lower range value/upper range value (without pressure available) Introduction The lower range value (4 mA) corresponds to 0% of the measuring range. The upper range value (20 mA) corresponds to 100% of the measuring range. Without pressure available, you have the following options for assigning the desired pressure measurements to the lower range value and the upper range value: Device without display...
Page 110: Damping Value [04]
Parameter assignment 9.2 Parameter assignment over device with display 9.2.3 Damping value [04] Sets the damping (filtering) for smoothing of sudden process value variations. Setting range: 0.01 s ... 100 s, in steps of 0.01 s Factory setting: 2 s, or as specified in order The damping influences the reaction time of the device: When you increase the damping value, the response time of the pressure transmitter to changes in the pressure measurement increases.
Page 111 Parameter assignment 9.2 Parameter assignment over device with display For volume and mass flow measurements, the device uses adjustable square root functions. For volume measurement, the device uses the tank characteristic curves for various vessel geometries. In the "Customized characteristic curve" application, enter the breakpoints of the characteristic curve using remote operation (e.g.
Page 112: Pressure Measurement
Parameter assignment 9.2 Parameter assignment over device with display Setting range: Application Characteristic curve Pressure PRESS Linear, proportional to pressure Level LEVEL Linear, proportional to level Volume flow VSLN Linear, square root Proportional to flow rate, linear up to the application point (Page 119) VSOFF Hold at 0, square root Proportional to flow rate, deactiva‐...
Page 113: Level Measurement
Parameter assignment 9.2 Parameter assignment over device with display ● If the device is set for pressure measurement, no other measured variables (e.g. volume flow) are available. Example For the pressure measurement, you set the following values, for example: Damping value: 2.0 s Lower range value: 0.0 bar...
Page 114 Parameter assignment 9.2 Parameter assignment over device with display Example For the level measurement, you set the following values, for example: Damping value: 2.0 s Lower range value: 0.0 bar Upper range value: 5.0 bar Application: Level (LEVEL) Unit: Lower scaling point: 0.0 m Upper scaling point: 49 m...
Page 115: Volume And Mass Flow Measurements
Parameter assignment 9.2 Parameter assignment over device with display 9.2.4.3 Volume and mass flow measurements The following characteristic curves are available for volume and mass flow measurements: ● Hold at 0, square root (VSOFF, for volume or MSOFF, for mass flow) The loop current is 4 mA up to the application point (low flow cut-off (Page 132)).
Page 116 Parameter assignment 9.2 Parameter assignment over device with display ● Two step linear, square root (VSLN2, for volume or MSLN2, for mass flow) The loop current has a proportional relationship with the flow rate, two step linear up to the application point (Page 119). The square root SLIN2 has a permanently defined application point of 10%.
Page 117 Parameter assignment 9.2 Parameter assignment over device with display Loop current or flow Set measuring span Example: Volume flow (linear) For the volume flow measurement, you set the following values, for example: Damping value: 2.0 s Lower range value: 0.0 mbar Upper range value: 0.6 bar Application:...
Page 118: Volume Measurement
Parameter assignment 9.2 Parameter assignment over device with display 9.2.4.4 Volume measurement For the volume measurement, the device uses tank characteristic curves for various vessel shapes. Display Vessel Description CYLIN Cylinder vessel SPHER Sphere vessel LINR Linear vessel CONIC Conical bottom vessel ①...
Page 119: Set Application
Parameter assignment 9.2 Parameter assignment over device with display Example For the volume measurement, you set the following values, for example: Damping value: 2.0 s Lower range value: 0.0 mbar Upper range value: 500.0 mbar Application: Cylinder vessel (CYLIN) Unit: Lower scaling point: 0.0 m Upper scaling point:...
Page 120: Adjusting Zero Point (Gauge Pressure)
Parameter assignment 9.2 Parameter assignment over device with display The following options are available to correct zero-point errors: Device without display Device with display Remote operation Press the button and hold for "Zero point adjustment" parame‐ Device > Zero point adjustment 3 seconds.
Page 121: Adjusting The Zero Point (Differential Pressure)
Parameter assignment 9.2 Parameter assignment over device with display 9.2.6.2 Adjusting the zero point (differential pressure) Requirement The pressure measurement is stable. Procedure 1. Make sure there is identical pressure in the two process connections. 2. Navigate to the parameter view. Navigating in the views (Page 76) 3.
Page 122: Apply Lower Range Value [08]/Apply Upper Range Value [09]
Parameter assignment 9.2 Parameter assignment over device with display 3. Press the button. The value "0" appears on the display and the "EDIT" symbol flashes. 4. Enter the known reference pressure using the buttons. 5. Confirm the value by pressing the button.
Page 123 Parameter assignment 9.2 Parameter assignment over device with display With pressure present, you have the following options for assigning the desired pressure measurements to the lower range value and the upper range value: Device without display Device with display Remote operation Apply lower range value Hold down the "Apply lower range val‐...
Page 124: Select Fault Current [10]
Parameter assignment 9.2 Parameter assignment over device with display 3. Press the button. The existing pressure is displayed. 4. Use the button to confirm. The wizard starts. The wizard ends with the "COMPL" message. 5. Navigate to the "Apply upper range value" parameter [09]. The existing pressure is displayed.
Page 125: Upper Fault Current [12]
Parameter assignment 9.2 Parameter assignment over device with display 20.5 mA 20 mA 22.8 mA 3.55 mA 3.8 mA 4 mA ① Normal operation ② Lower fault current (factory setting) ③ Lower saturation limit (factory setting) ④ Upper saturation limit (factory setting) ⑤...
Page 126: Upper Saturation Limit [14]
Parameter assignment 9.2 Parameter assignment over device with display 20.5 mA 20 mA 22.8 mA 3.55 mA 3.8 mA 4 mA ① Normal operation ② Lower fault current (factory setting) ③ Lower saturation limit (factory setting) ④ Upper saturation limit (factory setting) ⑤...
Page 127: Selection [15]
Parameter assignment 9.2 Parameter assignment over device with display WARNING Undetected failure in devices with functional safety Note the following: ● For the maximum current output signal to be output, set the measuring range within the maximum permissible measuring span. You can find the maximum permissible measuring span of your measuring cell in the section Technical data (Page 199).
Page 128: Level Units [16]
Parameter assignment 9.2 Parameter assignment over device with display See also Application [05] (Page 110) 9.2.14.1 Level units [16] Selects the unit for the "Level" measurement. This parameter is only visible when you have selected the "Level" characteristic curve using the "Application"...
Page 129: Mass Flow Units [16]
Parameter assignment 9.2 Parameter assignment over device with display This parameter is only visible when you have selected a volume flow characteristic curve using the "Application" parameter. Certain units are displayed differently on the display and over remote operation. (Page 107) Setting range: Display (header line) Display (enumeration)
Page 130: Temperature Units [17]
Parameter assignment 9.2 Parameter assignment over device with display Certain units are displayed differently on the display and over remote operation. (Page 107) Setting range: Display (header line) Display (enumeration) Remote operation KG/Sec KG/S kg/s Gr/Sec Gr/min g/min Gr/h KG/min KG/m kg/min KG/h...
Page 131: Set Lower Scaling Point
Parameter assignment 9.2 Parameter assignment over device with display Level Setting range: Freely selectable numeric value Factory setting: Volume Setting range: Freely selectable numeric value Factory setting: Volume flow Setting range: Freely selectable numeric value Factory setting: Setting range: Freely selectable numeric value Factory setting: Mass flow Setting range:...
Page 132: Upper Scaling Point [19]
Parameter assignment 9.2 Parameter assignment over device with display 9.2.17 Upper scaling point [19] Sets the upper range value for the scaling. Depending on the application of the device, you set the upper scaling point as follows: Level Setting range: Freely selectable numeric value Factory setting: 100 m...
Page 133: Vessel Dimension A [21]
Parameter assignment 9.2 Parameter assignment over device with display The parameter is visible when you have selected the "Hold at 0, square root" (VSOFF or MSOFF) characteristic curve using the "Application" parameter. Setting range: 0% - 100% Factory setting: See also Volume and mass flow measurements (Page 115) 9.2.19 Vessel dimension A [21]...
Page 134: Vessel Dimension L [22]
Parameter assignment 9.2 Parameter assignment over device with display See also Configuring limit monitoring (Page 154) 9.2.20 Vessel dimension L [22] Sets the length of the bottom vessel for a lying parabolic ends vessel (PARAE). You can find a figure with the different vessel shapes under "Volume measurement (Page 118)".
Page 135: Disabling Button Lock
Parameter assignment 9.2 Parameter assignment over device with display 4. Select ON with the button. 5. Use the button to confirm. Result ● The display automatically returns to the measurement view. ● The display automatically changes between the measured values every 12 seconds. ●...
Page 136: Recovery Id [25]
Parameter assignment 9.2 Parameter assignment over device with display Requirement The "User PIN (Page 139)" parameter is enabled. Procedure 1. Navigate to the parameter view. Navigating in the views (Page 76) 2. Select the parameter "Change user PIN". 3. Press the button.
Page 137: Display Recovery Id
You can find the serial number of the device on the nameplate or via remote operation. Siemens Technical Support will give you a PUK (PIN Unlock Key) that you use to reset the user PIN to the factory setting 2457.
Page 138: User Pin [27]
Parameter assignment 9.2 Parameter assignment over device with display Procedure 1. In the parameter view, select the "PIN recovery" parameter. 2. Press the button. The cursor and the "EDIT" symbol flash. 3. Enter the digits of the PUK: – Use the button to change.
Page 139: Enable User Pin
Parameter assignment 9.2 Parameter assignment over device with display The user PIN 2457 is factory preset in the device. Note Write protection is automatically enabled 10 minutes after the last button operation. ● Enter the user PIN. 9.2.25.1 Enable user PIN Requirement The User PIN is disabled.
Page 140: Active Device Mode [28]
Parameter assignment 9.2 Parameter assignment over device with display 4. Select YES with the button. 5. Use the button to confirm. The message "USER PIN OFF" appears for 2 seconds. Result The User PIN is disabled. 9.2.26 Active device mode [28] Shows the mode in which the device is operated.
Page 141: Display Test [30]
Parameter assignment 9.2 Parameter assignment over device with display 9.2.28 Display test [30] Used to check that numbers, texts and symbols appear correctly on the display. ● To start the display test, press the button and select "START". When the display test is complete, the message "COMPL" appears. ●...
Page 142: Loop Test With User Defined Loop Current Value
Parameter assignment 9.2 Parameter assignment over device with display 9.2.29.2 Loop test with user defined loop current value 1. Navigate into the parameter view. Navigating in the views (Page 76) 2. In the parameter view, select the "Loop test" parameter. 3.
Page 143: Pressure Reference [33]
Parameter assignment 9.2 Parameter assignment over device with display Note To have the process value for "Level", "Volume", "Mass flow", "Volume flow" or "Customized characteristic curve" shown as the "Start view", first set the associated characteristic curve using the "Application" (Page 110) parameter. 9.2.31 Pressure reference [33] Used to adapt the display of the pressure unit to your application.
Page 144: Reset To Sensor Calibration
Parameter assignment 9.2 Parameter assignment over device with display 9.2.33.1 Reset to sensor calibration Resets the zero point and sensor calibration to the factory setting. 9.2.33.2 Reset DAC trim to the factory setting Resets the DAC trim (digital-to-analog converter trim) to the factory setting. The DAC trim is used to calibrate the 4 mA and 20 mA end points of the analog output with an external reference (e.g.
Page 145: Overload Behavior [36]
Parameter assignment 9.3 Parameter assignment over remote operation The following settings are reset to the factory setting among other things: ● Sensor calibration ● DAC trim ● The defaults that you have configured in your order. These defaults can then deviate from the ordered configuration. To restore the ordered configuration, use the "Restore ordered configuration (Page 144)"...
Page 146: Quick Start
Adjustable Preset Factory setting Long tag (TAG) Description Message Installation date Device Manufacturer Siemens Product name SITRANS P420 Article number e.g. 7MF0440-1GL01-5AF2-Z Order option 1/ Order option 2 e.g. A01+C11+C12+C14+C20+E00+H01+Y01+Y15+Y21 Serial number In accordance with the measuring cell selection/device manufac‐...
Page 147: Simulation
Parameter assignment 9.3 Parameter assignment over remote operation Parameter Adjustable Preset Factory setting Sensor serial number In accordance with the measuring cell selection/device manufac‐ ture Sensor type In accordance with the measuring cell selection/device manufac‐ ture Maximum measuring span In accordance with the measuring cell selection/device manufac‐ ture 9.3.4 Simulation...
Page 148: Simulate Ramp Function
Parameter assignment 9.3 Parameter assignment over remote operation The diagnostic ID "Cb" is displayed on the device. Note The simulated pressure value has a direct effect on the configured process value (e.g. volume or flow rate) and thus on the current output dependent on it. 9.3.4.2 Simulate ramp function To simulate a ramp function via remote operation (e.g.
Page 149: Customized Characteristic Curve
Parameter assignment 9.3 Parameter assignment over remote operation The diagnostic status of the simulation selected for each diagnostic is displayed in additional tabs in the dialog box. The simulated diagnostics is indicated by a check mark in the check box. End diagnostics simulation You close the simulation in the "Diagnostics simulation"...
Page 150: Custom Units" Parameter
Parameter assignment 9.3 Parameter assignment over remote operation Upper scaling point: 250 cans x values: 0%, 25%, 50%, 75%, 100% y values: 0%, 25%, 50%, 75%, 100% 9.3.5.2 "Custom units" parameter Selects a custom unit. The selected unit is displayed in the measurement view (Page 77). Setting range: Up to 12 characters Factory setting:...
Page 151: Sensor Calibration
Parameter assignment 9.3 Parameter assignment over remote operation See also Application [05] (Page 110) 9.3.6 Sensor calibration You use the sensor calibration to set the characteristic curve of the device at two trim points. The results are then correct measured values at the sensor trim points. The sensor trim points can be selected as any points within the nominal range.
Page 152: Digital-To-Analog Converter Trim (Dac Trim)
Parameter assignment 9.3 Parameter assignment over remote operation Sensor calibration at the high calibration point 1. Use remote control (e.g. SIMATIC PDM) to select the menu command "Device > Sensor calibration". 2. Apply the pressure for the high calibration point at the device. The high calibration point needs to be greater than the low calibration point.
Page 153 Parameter assignment 9.3 Parameter assignment over remote operation Procedure ● Trim at 4 mA: Use the menu command "DAC trim" to instruct the device to put out 4 mA. You read the measured value at an ammeter and enter this value. The device uses this value for offset correction of the current.
Page 154: Diagnostics Functions
Parameter assignment 9.3 Parameter assignment over remote operation 9.3.8 Diagnostics functions 9.3.8.1 Limit monitoring and event counter Introduction With the limit monitoring and event counter function, the following options are available to you via remote operation (e.g. SIMATIC PDM): ● Monitoring process values ●...
Page 155 Parameter assignment 9.3 Parameter assignment over remote operation Configuring the event counter Requirement You have configured the following values in limit monitoring: ● Upper limit ● Lower limit ● Hysteresis Configuring limit monitoring (Page 154) Procedure 1. In the "Limit" text box, enter the number of underrun and overrun events that must be reached in order to trigger the action for underrun and overrun respectively.
Page 156 Parameter assignment 9.3 Parameter assignment over remote operation Result Process value alarms and warnings are acknowledged and deleted. The event counter is reset. Hysteresis The hysteresis works as follows: Limits with hysteresis If you enter a non-zero value in the "Hysteresis" text box, the hysteresis is disabled. Upper limit with hysteresis (A) ①...
Page 157: Trend Log
Parameter assignment 9.3 Parameter assignment over remote operation Lower limit with hysteresis (B) ① An underrun event is counted when the process value falls below the lower limit The next underrun event is counted when the process value first rises above the lower limit plus ②...
Page 158: Operating Hours Counter
Parameter assignment 9.3 Parameter assignment over remote operation 5. Select the process values you want to record. 6. Click on "Transfer" to write the log settings to the device. The buffer with the existing logging points is deleted and overwritten with new logging points. Show trend log 1.
Page 159: Functional Safety
Functional Safety Introduction This section includes the required additional information for parameter assignment, commissioning and maintenance of the device in a safety-instrumented system. 10.1 Safety concept The device was developed in accordance with the Safety Integrity Level (SIL), which is defined as a relative level of risk reduction offered by a safety function.
Page 160: Safety Function
Safety allowance The diagnostics function reacts within 2 seconds after detection of an error. Note For use outside the standard reference conditions, contact Siemens to define an additional safety accuracy. See also Remote seals and primary element for devices with functional safety (Page 41)
Page 161 Only one SITRANS P device is required for single-channel operation for SIL 2. Safety-instrumented system in multi-channel operation (SIL 3) Final controlling elements...
Page 162: Device States
Functional Safety 10.1 Safety concept Two SITRANS P devices are required for multi-channel operation for SIL 3. Operation with one device is not permitted. Note Switching-off of system at high monitoring accuracy The two transmitters are connected to the process at different positions. Actual differences in pressure ≥...
Page 163: Operating Modes Of The Device
Functional Safety 10.1 Safety concept 10.1.4 Operating modes of the device The device can be operated as follows: ● "Functional Safety disabled" is used for operation in non-safety-related applications. ● "Functional Safety enabled" is used for operation in safety-related applications. See also Enabling Functional Safety (Page 166) 10.1.5...
Page 164: Validation
Functional Safety 10.1 Safety concept When Functional Safety is enabled, the following device modes are displayed via the display or remote operation: Device mode Display Description Current output val‐ Safe current output Functional Safety SAFE Ensures safe meas‐ Operating signal enabled urement output at (4 to 20 mA)
Page 165: Safety-Related Parameters
Functional Safety 10.1 Safety concept 10.1.5.2 Safety-related parameters The following parameters are the safety-related parameters of the device: Parameter ID Parameter name on Meaning the display PV SELECT Pressure is the primary variable. The parameter cannot be changed. DAMPING Damping value [04] (Page 110) UPPER RANGE Set upper range value parameter [03] (Page 108) LOWER RANGE...
Page 166: Enabling Functional Safety
Functional Safety 10.2 Enabling Functional Safety Note Before you enable Functional Safety, follow these steps: ● Setting safety-relevant parameters ● Setting the zero point (Page 119) ● Sensor calibration (Page 151) ● Digital-to-analog converter trim (DAC trim) (Page 152) The items listed above are tested with the function test (Page 164) of the Functional Safety. 10.2 Enabling Functional Safety You enable or disable Functional Safety with the "Functional Safety"...
Page 167: Enabling Functional Safety Over Device With Display
Functional Safety 10.2 Enabling Functional Safety 10.2.1 Enabling Functional Safety over device with display Requirement ● You have checked the settings of the safety-related parameters. Safety-related parameters (Page 165) Note The main line of the display has a measured value display with a maximum of five digits. ●...
Page 168 Functional Safety 10.2 Enabling Functional Safety Validating safety-related parameters 1. Select "VALID". 2. Use the button to confirm. 3. Navigate to the safety-related parameters with the button. To correct the safety-related parameters, exit the wizard with the button. Use the button to confirm.
Page 169 Functional Safety 10.2 Enabling Functional Safety 5. Use the button to confirm. 6. When you have successfully validated the safety function, restart the wizard and select "PASSD". The message "SAFETY MODE ON" (Functional Safety enabled) appears. Result The device is in the "Functional Safety enabled" device mode. Figure 10-3 Parameter view ●...
Page 170: Enabling Functional Safety Over Remote Operation
Functional Safety 10.2 Enabling Functional Safety 10.2.2 Enabling Functional Safety over remote operation Requirement ● You have documented the device identification: – During installation, you have read and documented the product name and the serial number on the nameplate of the device. –...
Page 171 Functional Safety 10.2 Enabling Functional Safety 3. Validate the following settings: – Identification data of your device: Long tag, product name, serial number. – Settings of the safety-related parameters To change the settings, exit the wizard with "Cancel". 4. Write down the fingerprint. Whenever you start the validation, the device generates a fingerprint.
Page 172 Functional Safety 10.2 Enabling Functional Safety 5. To confirm the validation, enter the validation key. 6. To validate the safety function, start the function test. The device changes to the "Safety validation" device mode. 7. Confirm with "OK". Validate safety function 1.
Page 173 Functional Safety 10.2 Enabling Functional Safety 3. Enter the user PIN. 4. Validate the identification data of your device. 5. Check that the displayed fingerprint matches the fingerprint you have written down. 6. Confirm the successful function test. Result The device is in the "Functional Safety enabled" device mode. ●...
Page 174: Acknowledging Safety-Related Errors
Functional Safety 10.3 Acknowledging safety-related errors 10.3 Acknowledging safety-related errors 10.3.1 "Safety critical error" device mode When a safety-related error is detected on the device, the current output signal corresponds to the fault current and the diagnostic message is displayed. Figure 10-4 Example: Diagnostic message for overview Acknowledge the safety-related error with the "Functional Safety"...
Page 175: Acknowledging Safety-Related Errors Via Remote Operation
Functional Safety 10.3 Acknowledging safety-related errors 10.3.2 Acknowledging safety-related errors via remote operation Procedure 1. Select the menu command "Functional Safety". 2. Enter the user PIN. 3. Validate the identification data of your device: Long tag, product name and serial number. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 176: Disabling Functional Safety Over Device With Display
Functional Safety 10.4 Disabling Functional Safety over device with display 4. To acknowledge the safety-related error, click on "Acknowledge". The device restarts automatically. 5. Validate the identification data of your device again: Long tag, product name and serial number. Result ●...
Page 177: Disabling Functional Safety Over Remote Operation
Functional Safety 10.5 Disabling Functional Safety over remote operation Procedure 1. Navigate to the parameter view. Navigating in the views (Page 76) 2. Select the parameter "Functional Safety" [29]. 3. Enter the user PIN. The wizard starts. 4. Select YES immediately and confirm wit the button.
Page 178: Proof Test
Functional Safety 10.6 Proof test Result The device is in the "Functional Safety disabled" device mode. Note The system shows unexpected data or behaves differently than described in this procedure. ● Repeat the entire procedure. 10.6 Proof test Proof tests can detect errors in the device that are not detected by the integrated diagnostics of the device.
Page 179: Documenting A Proof Test
Errors that are of critical importance for Functional Safety must be reported to Siemens Technical Support. 10.7 Repair and service NOTICE Repair and service Repair and service work may only be performed by personnel authorized by Siemens. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 180 Functional Safety 10.7 Repair and service SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 181: Service And Maintenance
Service and maintenance 11.1 Basic safety instructions The device is maintenance-free. However, a periodic inspection according to pertinent directives and regulations must be carried out. An inspection can include, for example, check of: ● Ambient conditions ● Seal integrity of the process connections, cable entries, and cover ●...
Page 182: Cleaning
11.3 Maintenance and repair work WARNING Impermissible repair of explosion protected devices Risk of explosion in hazardous areas ● Repair must be carried out by Siemens authorized personnel only. SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 183 Service and maintenance 11.3 Maintenance and repair work WARNING No maintenance interval has been defined Device failure, device damage, and risk of injury. ● Define a maintenance interval for recurring tests depending on the use of the device and your own experience. ●...
Page 184: Checking The Seals
Incorrect measured values will be displayed. Changing the seals in a process flange of a differential pressure measuring cell can alter the lower range value. ● Changing seals in devices with differential pressure measuring cells may only be carried out by personnel authorized by Siemens. Note Using the wrong seals Using the wrong seals with flush-mounted process connections can cause measuring errors and/or damage the diaphragm.
Page 185: Check Cable Glands
Service and maintenance 11.3 Maintenance and repair work 11.3.2 Check cable glands ● Check the tightness of the cable glands at regular intervals. ● Tighten the cable glands if necessary. 11.3.3 Replacing spare parts 11.3.3.1 Replacing electrical connections and cable entries Procedure 1.
Page 186 Service and maintenance 11.3 Maintenance and repair work 4. Remove the display from the holder. ① 5. Disconnect the cable of the display from the 4-pole connector Installing the display ① 1. Connect the cable of the display with the 4-pole connector by observing the poling: 2.
Page 187: Replacing The Termination Board
Service and maintenance 11.3 Maintenance and repair work 11.3.3.3 Replacing the termination board Removing the termination board 1. De-energize the device. ② 2. Use a 3 mm Allen key to loosen the front safety catch 3. Open the cover of the electronic connection compartment. 4.
Page 188: Return Procedure
Enclose the bill of lading, return document and decontamination certificate in a clear plastic pouch and attach it firmly to the outside of the packaging. Required forms ● Delivery note ● Return document (http://www.siemens.com/processinstrumentation/returngoodsnote) with the following information: – Product (item description) – Number of returned devices/replacement parts –...
Page 189: Diagnostics And Troubleshooting
The following table provides possible cause of device status and actions for the user or service. The symbols used on the local display are based on NAMUR status signals, whereas symbols used in SIMATIC PDM are based on Siemens standard alarm classes. Note Device status priority conflict - Namur vs Siemens standard When more than one diagnostic event is active simultaneously, a conflict in priorities may arise.
Page 190 Diagnostics and troubleshooting 12.1 Device status symbols Device status symbols Display NAMUR SIMATIC PDM/PLC – NAMUR NE 107 – HCF Symbol Device status Priority * Symbol Device status Priority * Failure Maintenance alarm Cause: Output signal invalid due to fault in the field device or in the peripherals. Measure: Maintenance is required immediately.
Page 191 Measure: No action required. * The smallest number indicates the highest level of error severity. ** In SIMATIC PDM, the Siemens standard symbol as well as the corresponding NA\ symbol is displayed (by the device display). SITRANS P320/P420 with 4 to 20 mA/HART...
Page 192: Diagnostic Messages
Diagnostics and troubleshooting 12.2 Diagnostic messages 12.2 Diagnostic messages The following table shows the IDs of diagnostic messages and possible causes and instructions for corrective actions. Symbols Message Cause/Remedy Event counter 1 The number of overruns of the process value (set in parameters "Upper limit"...
Page 193 Diagnostics and troubleshooting 12.2 Diagnostic messages Symbols Message Cause/Remedy Event counter 2 The number of underruns of the process value (set in parameters "Lower limit" and "Monitored value") has reached the threshold. Number underruns above threshold Reset and acknowledge event counter. Maintenance required Check process conditions.
Page 194 Diagnostics and troubleshooting 12.2 Diagnostic messages Symbols Message Cause/Remedy Limit monitoring 1 Monitored value is above limit (set in parameter "Upper limit"). Above limit Process value alarm Limit monitoring 1 Monitored value is below limit (set in parameter "Lower limit"). Below limit Process value alarm Limit monitoring 2...
Page 195 Diagnostics and troubleshooting 12.2 Diagnostic messages Symbols Message Cause/Remedy Event counter 2 The number of underruns of the process value (set in parameters "Lower limit" and "Monitored value") has reached the threshold. Number underruns above threshold Reset and acknowledge event counter. Maintenance alarm Check process conditions.
Page 196 Diagnostics and troubleshooting 12.2 Diagnostic messages Symbols Message Cause/Remedy Loop current read back error The loop current does not correspond to the expected value. Maintenance demanded Check DAC trim settings. Restore to factory DAC calibration. If the problem persists, contact Technical Support. Process conditions outside the Uncertain values due to process conditions.
Page 197: Troubleshooting
Diagnostics and troubleshooting 12.3 Troubleshooting Symbols Message Cause/Remedy Safety validation mode Device is in safety validation mode. Configuration warning Complete the functional test and confirm that it was successful in the Functional Safety wizard. (yellow) Safety critical device error Acknowledge the error in menu "Functional Safety". If the device does not display an error, repeat the safety start up.
Page 198 Diagnostics and troubleshooting 12.3 Troubleshooting SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 199: Technical Data
Technical data 13.1 Input 13.1.1 Gauge pressure Gauge pressure input Measured variable Gauge pressure Measuring span (continuous‐ Measuring span Maximum permissible Maximum test ly adjustable) or measuring operating pressure MAWP pressure range, max. operating pres‐ (PS) sure (in accordance with 8.3 …...
Page 200: Gauge Pressure With Front-Flush Diaphragm
Technical data 13.1 Input Gauge pressure measuring limits 30 mbar a/3 kPa a/0.44 psi a ● Measuring cell with inert oil 100 mbar a/10 kPa a/1.45 psi a ● Measuring cell with FDA-compliant oil Upper measuring limit 100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/ 1450 psi and 60 °C ambient temperature/medium temperature) Lower range value Between the measuring limits (continuously adjustable)
Page 201: Gauge Pressure From The Differential Pressure Series
Technical data 13.1 Input Gauge pressure measuring limits with front-flush diaphragm 100 mbar a/10 kPa a/1.45 psi a ● Measuring cell with FDA-compliant oil Upper measuring limit 100% of max. range 13.1.3 Gauge pressure from the differential pressure series Gauge pressure input from the differential pressure series Measured variable Gauge pressure and differential pressure Measuring span (continuous‐...
Page 202: Absolute Pressure From The Gauge Pressure Series
Technical data 13.1 Input Gauge pressure measuring limits from differential pressure series 30 mbar a/3 kPa a/0.44 psi a ● Measuring cell with inert oil ● Measuring cell with FDA-compliant oil 100 mbar a/10 kPa a/1.45 psi a Upper measuring limit 100% of max.
Page 203: Absolute Pressure With Front-Flush Diaphragm
Technical data 13.1 Input For devices with functional safety, the minimum permissible measuring span is limited by the spread. Therefore, ensure that the configured spread is no higher than 5:1. Absolute pressure measuring limits from gauge pressure series Lower measuring limit 0 mbar a/kPa a/psi a ●...
Page 204: Absolute Pressure From The Differential Pressure Series
Technical data 13.1 Input The MAWP value of the pressure transmitter can be lower than the PN value of the mounting flange and vice versa. To determine the maximum permissible operating pressure and the maximum permissible test pressure, use the lowest value as reference. Absolute pressure measuring limits with front-flush diaphragm Lower measuring limit ●...
Page 205 Technical data 13.1 Input Absolute pressure measuring limits from dif‐ ferential pressure series For process temperature 60 °C < ϑ 30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C ≤ 100 °C (max. 85 °C for measur‐ 3 kPa a + 2 kPa a •...
Page 206: Differential Pressure And Flow
Technical data 13.1 Input 13.1.7 Differential pressure and flow Differential pressure input and flow Measured variable Differential pressure and flow Measuring span (continuous‐ Measuring span Maximum permissible Max. permissible ly adjustable) and maximum operating pressure test pressure operating pressure (accord‐ MAWP (PS) ing to 2014/68/EU Pressure 1 ...
Page 207: Level
Technical data 13.1 Input For devices with functional safety, the minimum permissible measuring span is limited by the spread. Therefore, ensure that the configured spread is no higher than 5:1. Differential pressure and flow measuring limits Lower measuring limit -100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a ●...
Page 208: Measuring Accuracy Of Sitrans P320
Technical data 13.2 Measuring accuracy of SITRANS P320 For devices with functional safety, the minimum permissible measuring span is limited by the spread. Therefore, ensure that the configured spread is no higher than 5:1. Level measuring limits Lower measuring limit Measuring cell with silicone oil -100% of max.
Page 209 Technical data 13.2 Measuring accuracy of SITRANS P320 Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure 1 bar/100 kPa/14.5 psi ≤ 0.065% ≤ (0.004 • r + 0.045)% 4 bar/400 kPa/58 psi 16 bar/1.6 MPa/232 psi 63 bar/6.3 MPa/914 psi 160 bar/16 MPa/2321 psi r ≤...
Page 210: Gauge Pressure From The Differential Pressure Series
Technical data 13.2 Measuring accuracy of SITRANS P320 13.2.4 Gauge pressure from the differential pressure series Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from the differential pressure series Measuring span ratio r (spread, Turn-Down) r = max.
Page 211: Absolute Pressure From Gauge And Differential Pressure Series
Technical data 13.2 Measuring accuracy of SITRANS P320 Step response time T (without electrical damping) - gauge pressure from differential pressure series 20 mbar/2 kPa/8.031 inH Approx. 0.160 s 60 mbar/6 kPa/24.09 inH2O Approx. 0.150 s 250 mbar/25 kPa/3.6 psi Approx.
Page 212: Absolute Pressure With Front-Flush Diaphragm
Technical data 13.2 Measuring accuracy of SITRANS P320 Step response time T (without electrical damping) - absolute pressure from gauge and differential pressure series Gauge pressure series All measuring cells Approx. 0.105 s Differential pressure series 250 mbar/25 kPa/3.6 psi Approx.
Page 213: Gauge Pressure With Front-Flush Diaphragm
Technical data 13.2 Measuring accuracy of SITRANS P320 Effect of mounting position In pressure per change of angle 0.04 kPa/0.4 mbar/0.006 psi per 10° incline (zero-point correction is possible with position error compen‐ sation) 13.2.7 Gauge pressure with front-flush diaphragm Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm Measuring span ratio r (spread, Turn-Down) r = max.
Page 214: Differential Pressure And Flow
Technical data 13.2 Measuring accuracy of SITRANS P320 13.2.8 Differential pressure and flow Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Measuring span ratio r (spread, Turn-Down) r = max. measuring span/set measuring span and nomi‐ nal measuring range Linear characteristic curve r ≤...
Page 215 Technical data 13.2 Measuring accuracy of SITRANS P320 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Flow 25 ... 50% 250 mbar/25 kPa/3.63 psi ≤ 0.13% ≤ (0.008 • r + 0.09)% 600 mbar/60 kPa/8.70 psi 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...
Page 216 Technical data 13.2 Measuring accuracy of SITRANS P320 Long-term stability at ±30 °C (±54 °F) - differential pressure and flow 250 mbar/25 kPa/3.63 psi In 5 years ≤ (0.125 • r)% 600 mbar/60 kPa/8.70 psi In 10 years ≤ (0.15 • r)% 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...
Page 217: Level
Technical data 13.2 Measuring accuracy of SITRANS P320 13.2.9 Level Conformity error at limit point setting, including hysteresis and repeatability - level Measuring span ratio r (spread, r = max. measuring span/set measuring span and nominal measuring range Turn-Down) ● Linear characteristic curve r ≤...
Page 218: Measuring Accuracy Of Sitrans P420
Technical data 13.3 Measuring accuracy of SITRANS P420 13.3 Measuring accuracy of SITRANS P420 13.3.1 Reference conditions ● According to EN 60770-1/IEC 61298-1 ● Rising characteristic curve ● Lower range value 0 bar/kPa/psi ● Seal diaphragm stainless steel ● Measuring cell with silicone oil filling ●...
Page 219: Gauge Pressure From The Differential Pressure Series
Technical data 13.3 Measuring accuracy of SITRANS P420 Effect of ambient temperature - gauge pressure 4 bar/400 kPa/58 psi ≤ (0.025 • r + 0.125)% 16 bar/1.6 MPa/232 psi 63 bar/6.3 MPa/914 psi 160 bar/16 MPa/2321 psi 400 bar/40 MPa/5802 psi 700 bar/70 MPa/10152 psi ≤...
Page 220 Technical data 13.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from differential pressure series 250 mbar/25 kPa/3.6 psi ≤ 0.04% ≤ (0.004 • r + 0.045)% 600 mbar/60 kPa/240.9 inH 1600 mbar/160 kPa/642.4 inH 5000 mbar/500 kPa/2008 inH 30 bar/3 MPa/435 psi...
Page 221: Absolute Pressure From Gauge And Differential Pressure Series
Technical data 13.3 Measuring accuracy of SITRANS P420 Effect of mounting position ≤ 0.7 mbar/0.07 kPa/0.01015266 psi per 10° incline (zero-point correction is possible with position error compen‐ sation) 13.3.5 Absolute pressure from gauge and differential pressure series Conformity error at limit point setting, including hysteresis and repeatability - absolute pressure from gauge and differential pressure series Measuring span ratio r (spread, Turn-Down) r = max.
Page 222: Absolute Pressure With Front-Flush Diaphragm
Technical data 13.3 Measuring accuracy of SITRANS P420 Effect of mounting position - absolute pressure from gauge and differential pressure series In pressure per change of angle ● For absolute pressure (from the gauge pressure series): ≤ 0.05 mbar/0.005 kPa/0.000725 psi per 10° incline ●...
Page 223: Gauge Pressure With Front-Flush Diaphragm
Technical data 13.3 Measuring accuracy of SITRANS P420 13.3.7 Gauge pressure with front-flush diaphragm Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm Measuring span ratio r (spread, Turn-Down) r = max. measuring span/set measuring span and nominal measuring range ●...
Page 224 Technical data 13.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Linear characteristic curve r ≤ 5 5 < r ≤ 60 60 mbar/6 kPa/0.87 psi ≤ 0.075% ≤...
Page 225 Technical data 13.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Flow 25 ... 50% ≤ 0.08% ≤ (0.008 • r + 0.09)% ● 250 mbar/25 kPa/3.63 psi 600 mbar/60 kPa/8.70 psi 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi...
Page 226 Technical data 13.3 Measuring accuracy of SITRANS P420 Long-term stability at ±30 °C (±54 °F) - differential pressure and flow 250 mbar/25 kPa/3.63 psi In 5 years ≤ (0.125 • r)% 600 mbar/60 kPa/8.70 psi In 10 years ≤ (0.15 • r)% 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...
Page 227: Level
Technical data 13.3 Measuring accuracy of SITRANS P420 13.3.9 Level Conformity error at limit point setting, including hysteresis and repeatability - level Measuring span ratio r (spread, r = max. measuring span/set measuring span and nominal measuring range Turn-Down) ● Linear characteristic curve r ≤...
Page 228: Output
Technical data 13.5 Operating conditions 13.4 Output Output HART Output signal 4 … 20 mA ● Low saturation limit (continuously 3.55 mA, set to 3.8 mA in the factory adjustable) 22.8 mA, factory-set to 20.5 mA or optionally 22.0 mA ●...
Page 229 Technical data 13.5 Operating conditions Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series) -50 … +85 °C (-58 … +185 °F) ● Storage temperature (for FDA-compliant oil: -20 ... + 85 °C (-4 ... +185 °F)) Climate class in accordance 4K4H with IEC 60721-3-4...
Page 230 Technical data 13.5 Operating conditions Operating conditions for gauge pressure and absolute pressure with front-flush diaphragm Enclosure -40 … +100 °C (-40 … +212 °F) Measuring cell with sili‐ -40 … +85 °C (-40 … +185 °F) cone oil filling Measuring cell with inert -40 …...
Page 231 Technical data 13.5 Operating conditions Operating conditions for gauge pressure and absolute pressure (from the differential pressure series), differential pressure and flow Note Observe the temperature class in hazardous areas. Enclosure -40 … +100 °C (-40 … +212 °F) Measuring cell with sili‐ -40 …...
Page 232 Technical data 13.5 Operating conditions Operating conditions for level Installation conditions Specified by the flange ● Installation instruction Ambient conditions ● Ambient temperature Note Observe the allocation of the max. permissible operating temperature to the max. permissible operating pressure of the relevant flange connection. Enclosure -40 …...
Page 233: Vibration Resistance
Technical data 13.6 Vibration resistance 13.6 Vibration resistance General operating conditions Gauge pressure series Differential pressure series Aluminum and stainless steel enclosure Aluminum and stainless steel enclosure Vibrations (sine) 2 ... 9 Hz at 0.3 mm IEC 60068-2-6 9 ... 200 Hz at 5 m/s² 1 octave/min 5 cycles/axis Continuous shocks (half-sine)
Page 234: Construction
Technical data 13.7 Construction Operating conditions according to IEC Differential pressure series 61298-3 (5g enhanced) Aluminum and stainless steel enclosure Vibrations (sine) 10 ... 58 Hz at 0.7 mm IEC 60068-2-6 58 ... 1000 Hz at 50 m/s² 1 octave/min 20 cycles/axis 1) Without mounting bracket Operating conditions for marine (only in...
Page 235 Technical data 13.7 Construction Construction for gauge pressure and absolute pressure (from the gauge pressure series) Process connection ● Connection pin G A in accordance with DIN EN 837-1 ● Female thread ‑14 NPT ● Oval flange (PN 160 (MAWP 2320 psi g)) with fastening screw thread: –...
Page 236 Technical data 13.7 Construction Construction for gauge pressure and absolute pressure (from the differential pressure series), differential pressure and flow rate Weight Approx. 3.9 kg (8.5 lb) with aluminum enclosure Approx. 5.9 kg (13 lb) with stainless steel enclosure Material ●...
Page 237 Technical data 13.7 Construction Construction for level Stainless steel, mat. no. 1.4404/316L, Monel 400, mat. no. 2.4360, Alloy B2, mat. no. ● Seal diaphragm on the 2.4617, Alloy C276, mat. no. 2.4819, Alloy C22, mat. no. 2.4602, tantalum, PTFE mounting flange Smooth as per EN 1092‑1, form B1 or ASME B16.5 RF 125 …...
Page 238: Torques
Technical data 13.9 Display, keys and auxiliary power 13.8 Torques Torques Connecting terminals 1.5 Nm (1.1 ft lb) ● Connecting terminals in the connection compartment ● External ground terminal on enclosure Cable glands/blanking plugs 4 Nm (3 ft lb) ● Screw-in torque for plastic gland in all enclosures 6 Nm (4.4 ft lb) ●...
Page 239: Certificates And Approvals
Technical data 13.10 Certificates and approvals 13.10 Certificates and approvals Explosion protection in accordance with ATEX BVS 18 ATEX E049X ● Intrinsic safety "i" Designation II 1/2 G Ex ia/ib IIC T4/T6 Ga/Gb Permissible ambient temperature -40 … +80 °C (-40 … +176 °F) Temperature class T4 -40 …...
Page 240 Technical data 13.10 Certificates and approvals Explosion protection in accordance with ATEX ● Type of protection for Zone 2 A power supply unit of intrinsically safe protection type "Ex ia" in zone 2 is sufficient to connect devices of intrinsically safe protection type [Ex ic]. Designation II 3G Ex ec IIC T4/T6 Gc Permissible ambient temperature "ec"...
Page 241 Technical data 13.10 Certificates and approvals Explosion protection in accordance with FM (USA) FM19US0155X The permissible operating values can be found in the certificate. Order variants Identification 7MF0..0-..-.B..-Z Class I, Zone 0, AEx ia llC T4/T6 Ga Class I, Zone 1, AEx ib llC T4/T6 Gb lntrinsically Safe (lS) for Class l, DIV 1, Gr.
Page 242 Technical data 13.10 Certificates and approvals Explosion protection in accordance with FM (USA) Special conditions for use ● For type of protection "db": When you use the device as partition wall device in zones that require EPL Ga, isolate the non- intrinsically safe circuit safely from ground, e.g.: through a SELV circuit.
Page 243: Dimension Drawings
Dimension drawings 14.1 SITRANS P320/P420 for gauge pressure and absolute pressure from the gauge pressure series approx. 96 (3.78) 17 (0.67) 105 (4.13) ① Electronics side, display (longer for cover with glass pane) ② Connection end ③ Electrical connection: ● M20 x 1.5 gland ●...
Page 244 Dimension drawings 14.1 SITRANS P320/P420 for gauge pressure and absolute pressure from the gauge pressure series Not with "flameproof enclosure" type of protection Not for "FM + CSA [is + XP]" type of protection Figure 14-1 SITRANS P320 and SITRANS P420 pressure transmitters for absolute pressure, from the gauge pressure series, dimensions in mm (inches) SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 245: Sitrans P320/P420 For Differential Pressure, Gauge Pressure, Flow And Absolute Pressure From The Differential Pressure Series
Dimension drawings 14.2 SITRANS P320/P420 for differential pressure, gauge pressure, flow and absolute pressure from the differential pressure series 14.2 SITRANS P320/P420 for differential pressure, gauge pressure, flow and absolute pressure from the differential pressure series ① Electronics side, display (longer for cover with glass pane) ②...
Page 246 Dimension drawings 14.2 SITRANS P320/P420 for differential pressure, gauge pressure, flow and absolute pressure from the differential pressure series Figure 14-2 SITRANS P320 and SITRANS P420 pressure transmitters for differential pressure and flow, dimensions in mm (inches) 146 (5.75) approx. 96 (3.78) 17 (0.67) 27 (1.06) 84 (3.31)
Page 247: Sitrans P 320/P420 For Level
Dimension drawings 14.3 SITRANS P 320/P420 for level 14.3 SITRANS P 320/P420 for level 27 (1.06) 84 (3.31) 146 (5.75) 29 (1.14) 74 (2.31) 61 (2.4) 135 (5.31) min. 92 (3.62) 108 (4.25) 54 (2.13) n x d 17 (0.67) approx.
Page 248: Sitrans P320/P420 (Front-Flush)
Dimension drawings 14.4 SITRANS P320/P420 (front-flush) Not with "flameproof enclosure" type of protection Not for "FM + CSA [is + XP]" type of protection Figure 14-4 SITRANS P320 and SITRANS P420 pressure transmitters for level, including mounting flange, dimensions in mm (inch) 14.4 SITRANS P320/P420 (front-flush)
Page 249: Note 3A And Ehdg
Dimension drawings 14.4 SITRANS P320/P420 (front-flush) 14.4.1 Note 3A and EHDG Note Approvals The references to the approvals for "EHEDG" and "3A" refer to the respective process connections and are not device-specific. Please refer to the technical specifications of the respective pressure transmitter to see whether the desired certificate is available for your device/flange combination.
Page 250: F&B And Pharma Flange
Dimension drawings 14.4 SITRANS P320/P420 (front-flush) Flange according to ASME ASME B 16.5 CLASS ⊘D 110 mm (4.3'') Approx. 52 mm (2'') 1½" 125 mm (4.9'') 1½" 155 mm (6.1'') 150 mm (5.9'') 165 mm (6.5'') 190 mm (7.5'') 210 mm (8.1'') 230 mm (9.1'') 255 mm (10.0'') 14.4.3...
Page 251 Dimension drawings 14.4 SITRANS P320/P420 (front-flush) DIN 11864-2 Form A - sterile collar flange ⊘D 94 mm (3.7'') Approx. 52 mm (2'') 113 mm (4.4'') 133 mm (5.2'') 159 mm (6.3'') Approvals EHEDG DIN 11864-2 Form A - sterile groove flange ⊘D 94 mm (3.7'') Approx.
Page 252 Dimension drawings 14.4 SITRANS P320/P420 (front-flush) Other connections Varivent connector ® ⊘D 40-125 84 mm (3.3'') Approx. 52 mm (2'') Approvals EHEDG Connection in accordance with DRD ⊘D 105 mm (4.1'') Approx. 52 mm (2'') BioConnect connectors BioConnect screwed joint ⊘D 82 mm (3.2'') Approx.
Page 253 Dimension drawings 14.4 SITRANS P320/P420 (front-flush) BioConnect flange connector ⊘D 110 mm (4.3'') Approx. 52 mm (2'') 140 mm (5.5'') 150 mm (5.9'') 175 mm (6.9'') 2" 100 mm (3.9'') 2½" 110 mm (4.3'') 3" 140 mm (5.5'') 4" 175 mm (6.9'') Approvals EHEDG BioConnect...
Page 254: Pmc Style
Dimension drawings 14.4 SITRANS P320/P420 (front-flush) Other connections BioControl connector ⊘D 90 mm (3.5'') Approx. 52 mm (2'') 120 mm (4.7'') Approvals EHEDG 14.4.4 PMC Style Connections for the paper industry PMC Style Standard ⊘D – – 40.9 mm (1.6'') Approx.
Page 255: Special Connections
Dimension drawings 14.4 SITRANS P320/P420 (front-flush) 14.4.5 Special connections Tank connection TG52/50 and TG52/150 ⊘D TG52/50 63 mm (2.5'') Approx. 63 mm (2.5'') TG52/150 63 mm (2.5'') Approx. 170 mm (6.7'') SMS connectors SMS sockets with union nut ⊘D 2" 84 mm (3.3'') Approx.
Page 256 Dimension drawings 14.4 SITRANS P320/P420 (front-flush) IDF connectors IDF sockets with union nut ⊘D 2" 77 mm (3.0'') Approx. 52 mm (2.1'') 2½" 91 mm (3.6'') 3" 106 mm (4.2'') IDF threaded sockets ⊘D 2" 64 mm (2.5'') Approx. 52 mm (2.1'') 2½"...
Page 257: Product Documentation And Support
– "Download as html5, only PC": Open or save the manual in the HTML5 view on your PC You can also find manuals with the Mobile app at Industry Online Support (https:// support.industry.siemens.com/cs/ww/de/sc/2067). Download the app to your mobile device and scan the device QR code. Product documentation by serial number Using the PIA Life Cycle Portal, you can access the serial number-specific product information including technical specifications, spare parts, calibration data, or factory certificates.
Page 258: Technical Support
In addition to our technical support, Siemens offers comprehensive online services at Service & Support (http://www.siemens.com/automation/serviceandsupport). Contact If you have further questions about the device, contact your local Siemens representative at Personal Contact (http://www.automation.siemens.com/partner). To find the contact for your product, go to "all products and branches" and select "Products &...
Page 259: Remote Operation
Operating Manual 'Help for SIMATIC PDM'. The manual is delivered with SIMATIC PDM software. Once the SIMATIC PDM is installed on your computer you find the manual under: Start > All programs > Siemens Automation > SIMATIC > Documentation. Link at our website: SIMATIC PDM instructions and manuals (https://support.industry.siemens.com/cs/ww/en/ps/...
Page 260: Deactivate Buffers When Connecting Via Serial Modem
Remote operation B.1 SIMATIC PDM B.1.3 Deactivate buffers when connecting via serial modem Introduction This deactivation is required to align SIMATIC PDM with the HART modem when using a Microsoft Windows operating systems. Deactivating buffers is not necessary when connecting via USB. Condition ●...
Page 261: Updating The Electronic Device Description (Edd)
1. Check that the EDD revision match the Firmware revision in the device according to the table in section Product compatibility (Page 16). 2. Go to the support page Software downloads (https://www.siemens.com/ processinstrumentation/downloads). 3. Enter the product name in the field "Enter search term...".
Page 262 Remote operation B.1 SIMATIC PDM SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 263: Checklist For Functional Safety
Checklist for Functional Safety You can use this checklist to document the steps for enabling Functional Safety. Step 1: User PIN Change preset user PIN 2457 ● Yes ● Setting range: 1 to 65535 ● No SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 264 Checklist for Functional Safety Step 2: Validate values using the "Func‐ Values for the validation Enter validated value tional Safety" wizard ① Device identification data (if Function‐ The values can be found on the al Safety is enabled via remote oper‐ nameplate of the device and are ation) displayed via the wizard.
Page 265 Checklist for Functional Safety Date when Functional Safety was enabled Signature SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 266 Checklist for Functional Safety SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 267: Sealing Plug / Thread Adapter
Sealing plug / thread adapter Intended use of accessory part The sealing plug and the thread adapter (components) can be used for installation in electrical equipment of flameproof" "Ex d" type of protection of groups IIA, IIB, IIC as well as dust protection by enclosure "Ex t"...
Page 268: Technical Specifications Of Accessory Part
Sealing plug / thread adapter D.3 Technical specifications of accessory part Note Loss of type of protection Changes in the ambient conditions can loosen the component. ● As part of the recommended maintenance intervals: Check the compression fitting for tight fit and tighten, if necessary.
Page 269: Dimensional Drawings For Accessory Part
Sealing plug / thread adapter D.4 Dimensional drawings for accessory part Dimensional drawings for accessory part Sealing plug Ex d, M25 x 1.5, dimensions in mm Sealing plug Ex d, M20 x 1.5, dimensions in mm SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 270 Sealing plug / thread adapter D.4 Dimensional drawings for accessory part ① Sealing ring: Use for dust protection "Ex t" type of protection. Thread adapter Ex d, M25 x 1.5 on M20 x 1.5 and M25 x 1.5 on ½-14 NPT, dimensions in mm Sealing plug Ex d ½...
Page 271: Abbreviations
US - American Fire Protection Organization F&B Food and beverage industry Process Device Manager Tool for communication with HART devices (manufacturer: Siemens) Turn-down Ratio of the set measuring span to the maximum set measuring span, for example Set measuring span: 0.4 bar...
Page 272 Abbreviations SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...
Page 273: Glossary
Glossary ATEX ATEX is an abbreviation of the French term "Atmosphère explosible" (potentially explosive atmosphere). ATEX stands for both EC directives in the area of explosion protection: ATEX product directive 94/9/EC and ATEX operating directive 1999/92/EC. Auxiliary power supply Auxiliary power supply refers to an electrical supply or reference voltage which some electrical circuits require apart from the standard supply.
Page 274 Glossary Fingerprint Numerical value generated by the device when you start safety validation via the "Functional Safety" wizard. By comparing the fingerprint, you determine whether or not the device and the safety-related parameters have changed erroneously during activation of the functional safety. Firmware Firmware (FW) is software that is embedded on a chip in electronic devices –...
Page 275 Glossary Safety function Defined function executed by a safety-instrumented system with the objective of attaining or maintaining a safe system state by taking a defined hazardous incident into account. Example: Limit pressure monitoring Safety Integrity Level → Safety-instrumented system A safety-instrumented system (SIS) executes the safety functions that are required to achieve or maintain a safe state in a system.
Page 276 Glossary Total Error(s) Total error → Total Performance Total Performance is the square root of the sum of the squares of the three deviations resulting from the influence of the static pressure, the temperature and the characteristic deviation. Total Performance →...
Page 277: Index
Index DEVICE MODE, 79 Device plug Installing, 61 Diagnostic messages, 192 3A, 249 Differential pressure, 25, 26 Direct sunlight, 46 Disassembly, 64 Display ACCES Symbols, 81 INVALID CFG, 197 DISPLAY TEST, 79 Ambient temperature, 228, 229, 230, 232 Disposal, 188 Effect, 212, 222 Document history, 15 APPLICATION, 78, (Transfer function)
Page 278 Index Mounting flange, 38 MSL2B, 112 MSLN, 112 MSLN2, 112 Identification data MSOFF, 112 define, 146 multi-channel operation, 161 IDENTIFY, 79 MWP, (See MAWP) In accordance with the square root function see square-root extraction, 115 Install Remote seal, 54 Installation, 47 Nameplate, 28 Insulation, 49 Order supplement, 28...
Page 279 Index Threaded adapter Technical specifications, 268 Torque, 268 Torques, 238 Safety characteristic values, 162 Transfer function, (See Application) Safety function, 160 TRNFK Safety-related parameters, 165 INVALID CFG, 197 SATURAT HIGH, 79 Turn-down, 271 SATURAT LOW, 79 Scope of delivery, 16 Sealing plug Technical specifications, 268 Sealing plugs...
Page 280 Index SITRANS P320/P420 with 4 to 20 mA/HART Operating Instructions, 11/2019, A5E44852162-AC...

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Sitrans p320 Sitrans p420

Siemens SITRANS P Operating Instructions Manual

1 Getting Started

2 Introduction

3 Safety Information

4 Description

5 Installing/Mounting

6 Connecting

7 Operating

8 Commissioning

9 Parameter Assignment

10 Functional Safety

11 Service and Maintenance

12 Diagnostics and Troubleshooting

13 Technical Data

14 Dimension Drawings

Quick Links

Troubleshooting

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Summary of Contents for Siemens SITRANS P