Table of Contents Deutsch Introduction Inhaltsverzeichnis ........ 4 The MCX-II calibrator ......8 Pressure Measurements and Calibrations Français .............. 8 Table des matières ......6 Automatic Calibration ......8 Digital Communicator ......10 Standard Accessories ......10 Optional Accessories ......10 Functionality Parts identification ........
To perform automatic calibration, in the field or in the workshop, the MCX- II is supported by Intecal software. The software package and Memory Cards are optionally available from your local GE Sales Office or Distributor. K0320 Issue No. 1...
Functionallity Parts identification 1 POWER switch Switch to put the calibrator "ON" and "OFF". 2 CHG. (amber LED) charging indicator On when batteries are charged. The indicator should not light when non-rechargeable batteries are installed. 3 EXT. (green LED) external power indicator On when calibrator is powered from the optional line...
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Functionallity 15 Pt100 PROBE 4-pole mini DIN female connector for optional sensor. 16 Control and display panel Rotatable unit to position best for bench or portable use. 17 Auxilary Connectors For use with pressure module MCX-PM. [Do not make any other connections to these terminals] 18 Shoulder strap (removable) For portable use with adjustable...
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Functionallity Screens to work with The MCX-II has four types of screen display to work with: • Menu Selection Screen Offers selection of choices. Move cursor with arrow keys to your choice. • Set up Screen Move cursor with arrow keys to fill in the blanks.
Functionallity Keys to work with • The EXE key Pressing this key will execute choices or output level adjustments. • The CE key Press to cancel your previous key operation or to correct a typing error. • The NUMERICAL key-pad Used to dial output levels or simulated temperatures.
Power Sources Power from internal batteries Internal power is obtained from 6 x 1.5 V Alkaline batteries or 6 x 1.2 V Rechargeable batteries, Model R14, Baby or C size. • Installation of the batteries Switch the calibrator off before you install new batteries.
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Power Sources IMPORTANT: Be sure that batteries are inserted so that they are placed correctly with respect to the (+) and (-) indications in the battery compartment. If the batteries are not inserted correctly, they may leak and damage the calibrator. Do not mix old and new batteries, or batteries of different types (such as...
Power Sources Changing from Alkaline to Rechargeable batteries Remove the Alkaline batteries. Remove the switch protector sticker and slide the switch to the "Ni-Cd" position. Place a new protector sticker to save the new switch position. Install 6 rechargeable batteries (purchased locally).
Power Sources You may charge for periods longer than 14 hours. Note that at lower ambient temperatures the capacity of Ni-Cd batteries is significantly lower. If the batteries do not reach their normal capacity after a 14 hours charging period, cycle complete discharging and charging for at least 2 times.
Set-up Date and Time Settings The MCX-II has been equipped with an internal clock: to indicate how many days are left before last calibration expires and to record date and time on the memory card. The clock has been factory set to Paris time at the date of calibration.
Set-up Setting the clock to your local date Leave the cursor at NONE at the INPUT and OUTPUT menu and press the # key to open the set-up menu. Select DATE. Press EXE again. Enter date. Press EXE to accept new date or press CE to leave the set-up menu.
Set-up Temperature readings Temperature simulations and measurements can be shown in either Celsius or Fahrenheit units. Factory setting is Celsius. Readings are based on either IPTS 68 or ITS 90 temperature scales. Factory setting is ITS 90. Changing the temperature unit Leave the cursor at NONE at the INPUT and OUTPUT menu and press the # key to open the setup menu.
Set-up Changing the temperature scale Leave the cursor at NONE at the INPUT and OUTPUT menu and press the # key to open the setup menu. Select TEMP.SETTING and then the temperature scale and press EXE to change. Select TEMP.SETTING and then the temperature scale and press EXE to change.
Set-up Language Setting The MCX-II has multilingual software. The factory setting is ENGLISH. Setting the Language Leave the cursor at NONE at the measure and source menu and press # key to open the set-up menu. Select SYSTEM and then LANGUAGE and press EXE.
Set-up Access code settings The ACCESS CODE is programmable by the customer. The following menus are protected by this code; ACCESS CODE Calibration menu (Electrical and pressure) 9410 is standard factory setting. Leave the cursor at NONE at the measure and source menu and press # to open the set-up menu.
Set-up LCD screen viewing adjustments Setting the backlight automatic shut off mode Leave the cursor at NONE at the INPUT and OUTPUT menu and press the # key to open the setup menu. Select system and press EXE. Next select the BACKLIGHT MODE and press EXE.
Set-up Backlight on/off operation Press the LIGHT key to switch the backlight ON or OFF. Each key-pad operation will postpone shut-off for another time period. Screen contrast adjustment Turn the knob for best screen contrast. Contrast may alter with different viewing angles.
Set-up Bench or portable use The MCX-II calibrator can be used in the two ways as shown. Control and Display Panel can be rotated into 5 different positions for best screen viewing angle. Input and output terminals are accessible from front and back to plug-in the test leads in the most practical way.
Set-up Keystroking Key-stroking is a solution to eliminate time consuming key-pad operations for functions you frequently use. It can store 10 different sequences of key- pad operations. Recalling a sequence will put you right back into the function as stored. You can recall a sequence from any operational situation.
Set-up Clear keystroking Leave the cursor at NONE at the measure and source menu and press the # key to open the set-up menu. Select CLEAR KEYSTROKING MEMORY and press EXE. EXE will clean the KEYSTROKE memory. Press CE to leave the set-up menu. K0320 Issue No.
To measure signals General Select an input range and select DIRECT from the menu. It puts you right in the output mode. For other modes like scaled readings read the chapter " Special Output Functions". The upper part of the screen shows the window for input functions.
To measure signals Volts Select VOLTS and DIRECT in the measure menu and press EXE to open the working screen. The upper window in the working screen indicates the measured Volts reading. The range is 0-60 Volts split into two (auto)ranges of 0 to 6.0000 Volts and 6.001 to 60.000 Volts.
To measure signals Ohms Select OHMS and DIRECT in the measure menu and press EXE to open the working screen. The upper window in the working screen in the indicates the measured ohms reading. The range is 0-2000 Ohms split into two (auto)ranges of 0.01 to 400.00 Ohm and 400.0 to 2000.0 Ohm.
To measure signals Pulse Counter Mode There are three different modes available: Counts pulses up to 999.999.999 Counts the pulses received in one minute Counter Zähler Counts the pulses received in Compteur one hour Select COUNTER in the input menu and press EXE.
To measure signals Switch position change Connect the switch as indicated. Select SWITCH in the measure menu. Generate or simulate the appropriate source signal from the MCX-II to activate the switch. The measure (upper) reading tracks the source (lower) reading until the switch position changes.
To measure signals Circuit continuity tester To check wiring continuity use the RTD input terminals identified with SW. If NONE has been selected in the output menu and SWITCH has been selected in the input menu, press EXE to enter the continuity check mode. Closing the test loop will activate the built-in buzzer top prove that the wiring loop has a resistance of 2200...
To measure a thermocouple Go through the thermocouple input menu and make the selections as required. Press EXE to open the working screen; the measurement reading is shown in the upper window. Resolution is 0.1 degrees for most thermocouple types. Using compensation wires Thermocouples It is strongly recommended to use...
• Hand-held thermometer (not supplied by GE) Read the thermometer while holding it close to the instrument terminals. Select MANUAL and open the screen to fill out the obtained reading. Press EXE to enter.
To measure a RTD Go through the RTD input menu and make the selections as required. Press EXE to open the working screen; the measurement reading is shown in the upper window. Resolution is 0.1 or 0.01 degree depending on selected RTD type. The excitation current is 0.9 mA.
Special Measurement Functions Scaled Readings Except in temperature measure ranges all readings can be presented in a number of 5 digits and a sign. This number could represent an engineering unit like gallons/hour, revolutions/minute or any other relationship. This facility is available on both measurement and source functions.
Special Measurement Functions Setting up scaled readings (flow relationship) Only available on the mA ranges. Select SCALE and FLOW to open the set-up screen. High- and low-limits for the span are preset at 4 and 20 mA. Change span if necessary. Fill out both scale ends for the new scale.
Output of electrical signals General Select an output range and select DIRECT from the menu. It puts you right in the output mode. For other modes read section "Special Output Functions". The lower part of the screen shows the window for output functions.
Output of electrical signals Output mode In the OUTPUT mode you change both the output reading and the actual output at the terminals. Entering a new value through the numerical key-pad brings you back into the SET mode. Changing the output level Use the keys to ramp the output signal manually.
Output of electrical signals Millivolts Go to millivolts in the DIRECT mode to output any signal between -10 mV and 100 mV. Adjustments are made with 1 microvolt resolution. If the adjusted output level cannot be maintained the screen will prompt the warning CHECK LOOP.
Output of electrical signals Volts Go to Volts in the DIRECT mode to output any signal between zero and 12 Volts. Adjustments are made with 100 microvolts. If the adjusted output level cannot be maintained the screen will prompt the warning CHECK LOOP. Volts output Volt Geben Milliamps/XMTR...
Output of electrical signals Ohms Go through the OHM menu and select either the 0-400 or the 0-2000 Ohms range and enter the DIRECT mode. Resistance is simulated across the two terminals as shown. Connecting a third or fourth wire adapts the simulation to 3 or 4 wire input.
Output of electrical signals Frequency range 0-20 kHz Go to pulse DIRECT mode to output any pulse signal between zero and 20.000 Hz. Adjustments are made with 1 Hz resolution. Frequency range 0-6000 P./Min. Same as 0-100 Hz but reads in Pulses/Minute Pulse output range 0 - 99 999 P./Hour...
To simulate a thermocouple Go through the thermocouple menu and make the selections as required. Select the DIRECT mode to simulate any temperature within the range of the chosen thermocouple type. Adjustment resolution is 0.1 degree. For cold junction compensation considerations and different wiring methods read section "To measure thermocouples"...
RTD Simulation Go through the RTD menu and make the selections as required. Select DIRECT mode to simulate any temperature within the range of the 2 wire chosen RTD type. Adjustment 2 Leiter resolution is 0.1 or 0.01 degree 2 fils depending on RTD type.
Special Output Functions Step Mode In the step mode the MCX-II can generate preset output levels in three different ways; INP U T O U TP U T O H M mA/ XMT F R E Q . C O U N TE R VO L T SWITC H T/ C...
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Special Output Functions • Free programmable, Select PROGR Number of steps (2 to 10) and levels are free programmable. S TE P P R O G R . • 10% Divisions, Select 10% Free programmable span is automatically divided in 10 steps of 10% each.
Special Output Functions Ramp Mode The MCX-II can generate automatically a time linear increasing or decreasing output signal. Signal limits are free to set within any of the available output ranges. Time scales can be set between 1 and 9999 seconds. NOTE: The automatic ramp mode cannot be used together with the frequency measurement mode and...
Special Output Functions To start/stop a ‘one shot’ ramp Press to start a one shot ramp for signal increase and press to start this ramp for signal decrease. Press simultaneously to ‘freeze’ the ramp action. To restart press . Press CE to cancel the ramping operation.
User Power supplies Power supplies available for the user are designed to power transmitters, control and transducer wheatstone bridges. The following power supplies are available at the terminals as indicated: 24 VDC fixed, combined with the mA input terminals, current limited at 32 mA.
Transmitter calibration In this function transmitter source and measure readings are both scaled in engineering units for quick comparison. Transmitter may be a linearized, non- linearized, 4-20 or 0-20 mA model for thermocouples or RTD’s. Setting up a calibration Leave the cursor on NONE in the input menu and select the required output function.
Transmitter calibration To check or calibrate a transmitter All normal key-pad functions are available to change the output. Use key to change to fixed steps. keys to step through 0%, 25%, 50%, 75% and 100% of the span as set-up. Press return to the normal key-pad functions.
Temperature transmitter simulation User can dial a temperature in degrees to output a 4-20 mA or 0-20 mA signal. This signal can be used to simulate transmitters at control system input terminals. The simulated transmitter may be linearized or non- linearized.
Temperature transmitter simulation To simulate a transmitter All normal key-pad functions are available to change the (mA) output. Use the key to move to fixed steps. keys to step through 0%, 25%, 50%, 75% and 100% of the span as set-up. Press return to the normal key-pad functions.
Programmable signal converter With this unique feature any input signal (including the probe) can be converted into any on the MCX-II available output signals with full galvanic isolation. Zero and span settings for both input and output are fully programmable. Setting up a signal converter Make all input and output selections as you would do when you use input...
Ce Remarks Ce Remarks The MCX-II prompts EMI (Electro- Magnetic Interference) whenever the functionality is influenced by electromagnetic disturbances. The results obtained during this state are unreliable. The MCX-II is protected against failures by fast transient/burst. It restarts itself whenever this situation occurs and returns to the main screen.
ervice, repair and parts Recalibration of the MCX-II Leave the cursor at NONE in the INPUT and OUTPUT menu and press the # key to open the settings menu. Select CALIBRATION and press EXE. Fill out the access code and press EXE to open the calibration menu.
Service, repair and parts Cold Junction Compensation Calibration To recalibrate or check the cold junction measurement system for both input and output, use an electronic thermometer with a maximum error of ±0.07°C (0.13°F). Remove the compensation wire fixation screws from the T/C terminals. Insert the thermometer probe in the appropriate T/C terminal hole and make sure a good thermal contact is made down at...
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Service, repair and parts NOTES: 1. Calibration standards should have a valid calibration certification and should be at least 3 times more accurate as the published accuracies for the MCX-II for each range. 2. As derived from electrical parameters, temperature sensor ranges do not require any individual recalibration.
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Service, repair and parts Replacing the lithium battery Clock problems are in most cases caused by a weak lithium cell. To replace the cell, open the unit as described under chapter “fault finding procedures”. Use a small screwdriver to lift the cell from its socket. Remove the cell by sliding it away.
Service, repair and parts Fault finding procedures Opening and closing the calibrator housing Remove the batteries and disconnect the unit from other equipment. Take the four T/C wire screws out and release all visible Phillips screws at the back and inside the battery compartment.
When the MCX-II doesn’t work properly or doesn’t work at all, it is recommended to return the unit to one of the GE Service Centres or to your local distributor after you have checked the following; Most of the problems with portable...
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Service, repair and parts 5. The unit doesn’t measure milliamps. Check the fuse accessible from the front. Replace fuse only by p/n 13119 or Littelfuse No. 217.400. 6. The unit doesn’t measure Ohms or RTD’s Open the MCX-II and check the fuse on the input board.
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Kundendienst, Reparatur und Ersatzteile Maintenance, répartions et pièces détachées 5. L'appareil ne mesure pas le 5. Das Gerät mißt keine millampères Milliampere Vérifier le fusible accessible à Prüfen Sie die von der Vorderseite erreichbare l'avant. Le remplacer Sicherung. Ersetzen Sie sie uniquement par un fusible réf.
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• Output board p/n 25103 • Digital communicator board (Optional) p/n 25107 • LCD/Key-pad processor board (in rotatable panel) p/n 25105 • Key-pad board (in rotatable panel) p/ n 25106 For GE Sales and Service Points see back cover. K0320 Issue No. 1...
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Specifications Steps; 10 programmable, 10%, 20%, Special functions 25% div. stepping by key or adj. timer Ramp; programmable travel time for up/down and dwell Scaling; in 5 digits and sign on all electrical ranges Temp. XMT cal.; both input and output readings in temp.
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Overrange Displays ">>>>> " Underrange Displays "<<<<< " Readings Temp. °C or °F Batteries (LR14 or C) 6x 1.5V alkaline or 1.2V NiCd Battery life Alkaline; 22 hours at 20°C (68°F) NiCd; 14 hours at 20°C (68°F) Battery life 20 mA out Alkaline;...
The equipment will be replaced, repaired or adjusted at our option. The liability of GE is restricted to that given under our warranty. No responsability is accepted for damage, loss or other expense incurred through sale or use of our equipment.