fafnir torrix Technical Documentation Manual
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fafnir torrix Technical Documentation Manual

The magnetostrictive level sensor
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Technical Documentation
TORRIX
The magnetostrictive level sensor
Edition: 2016-09
Version: 16
Art. no.: 207074
FAFNIR GmbH • Schnackenburgallee 149 c • 22525 Hamburg • Germany • Tel.: +49 /40 / 39 82 07-0 • Fax: +49 /40 / 390 63 39
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  • Page 1 Technical Documentation TORRIX The magnetostrictive level sensor Edition: 2016-09 Version: 16 Art. no.: 207074 FAFNIR GmbH • Schnackenburgallee 149 c • 22525 Hamburg • Germany • Tel.: +49 /40 / 39 82 07-0 • Fax: +49 /40 / 390 63 39...

  • Page 2: Table Of Contents

    Installation with flange ..................7 Installation on the bypass ................... 7 Electrical connection ................9 Wiring diagram TORRIX ..................9 Wiring diagram TORRIX Ex ................. 9 Cable length ....................10 Wiring ......................12 User configuration ................13 Measuring span at the level sensor ..............13 Current consumption in failure mode ...............
  • Page 3 10.3.4 4th Supplement ....................30 10.4 Instructions ...................... 34 © Copyright: Reproduction and translation is permitted only with the written consent of the FAFNIR GmbH. The FAFNIR GmbH reserves the right to carry out product alterations without prior notice. Table of contents...

  • Page 4: Overview

    TORRIX with plug connector is available, see:  Technical documentation TORRIX M12, art. no. 350164 The TORRIX supplies a 4 ... 20 mA output signal which is configured using buttons in the ® sensor head, or a digital output signal as HART protocol.

  • Page 5: Safety Instructions

    Safety instructions The purpose of the TORRIX level sensor is to gauge liquid levels in tanks. The level sensor must be used exclusively for this purpose. The manufacturer accepts no liability for any form of damage resulting from improper use! The level sensor has been developed, manufactured and tested in accordance with the latest good engineering practices and generally accepted safety standards.

  • Page 6: Design And Function

    Design and function The design of the TORRIX level sensor is illustrated in the version with screw-in unit (see following figure). Inside sensor head (1) of the level sensor, concealed by cap (2), are the protected terminal clamps and configuration buttons. The electrical connection is established by an M16 x 1.5 screwed cable gland (3) or M12 plug-in connection at the top of the sensor...
  • Page 7 From these propagation times, it is possible to determine the current position of the float. Figure 2: Operating principle of the TORRIX level sensor Design and function Page 4/36...

  • Page 8: Installation

    ∅ 50 ∅ 50 Sensor head Sensor head Neck tube Screew-in unit Flange Probe tube Probe tube ø 12 ø 12 Float Float Guard ring Guard ring TORRIX screw-in unit TORRIX flange TORRIX Bypass Figure 3: TORRIX versions Page 5/36 Installation...

  • Page 9: Installation With Screw-In Unit

    During installation, take great care not to bend the probe tube, and protect the float from shock and impact loads. Installing a level sensor in areas exposed to a powerful external magnetic field is not permitted because this could impair gauging. The level sensor can also be fitted into the tank from underneath.

  • Page 10: Installation With Flange

    To ensure reliable gauging, the probe tube must be fitted with no deformation on the outside. The distance between the probe and bypass tubes must be as small as possible. Only floats approved by FAFNIR can be used. Page 7/36 Installation...
  • Page 11 TORRIX Bypass TORRIX Bypass Distance between probe tube Abstand Sondenrohr zu and float centre: max. distance Schwimmermitte: max. Abstand depends on the bypass float abhängig vom Bypass-Schwimmer max. max. Bypass float Magnet position Magnetposition Bypass-Schwimmer Sondenrohr spannungsfrei Probe tube tension-free...

  • Page 12: Electrical Connection

    4...20 mA Line resistance Leitungswiderstände Hilfsenergie Power supply Figure 8: Wiring diagram for TORRIX in a potentially explosive atmosphere Power supply: U = 30 V DC Minimum supply voltage: U = 8 V Total resistance (including cable resistance and load): ΣR = (U - U...

  • Page 13: Cable Length

    (refer to the electrical data in the EC type- examination certificate). Because of the voltage drop of 12 V the connection housing HPH Ex d and the safety barrier SB1 can be used with TORRIX only at a supply voltage higher than 20 volts. Electrical connection...
  • Page 14 The following table shows the maximum total resistances at different supply voltages, and cable resistances at various cross-sections: Supply Max. total Cable cross- Cable resistance For connection resistance [Ω] voltage [V] section per m copper - housing HPH Ex d cable [Ω/m] [mm²] suitable (yes/no)

  • Page 15: Wiring

    Wiring The wiring is not required for the variant TORRIX with M12 connector. Assignment of the M12 connector: Pin 1 = brown (+), Pin 3 = blue (-) For the wiring of the level sensor, proceed as follows: Unscrew sensor head cap (1) using an open-ended spanner.

  • Page 16: User Configuration

    Measuring span at the level sensor To enable configuration of the 4 mA and 20 mA points at the TORRIX level sensor, two buttons and an LED (light emitting diode) are provided near the terminals inside the sensor head.
  • Page 17 Unscrew sensor head cap (1) using an open-ended spanner. Press and hold 4 mA button (2) or 20 mA button (3) for at least 3 seconds. The green LED begins to flash. The level sensor is now in configuration mode. The current consumption of the level sensor is 12 mA.

  • Page 18: Current Consumption In Failure Mode

    Current consumption in failure mode If a malfunction is preventing the level sensor from recording a plausible float position, i.e. the measured level is incorrect, the sensor will enter failure mode after a short time. Failure mode signalling conforms to the NAMUR NE43 recommendation. The failure current is set by default to 21.5 mA but this value can also be set to 3.6 mA.

  • Page 19: Maintenance

    Maintenance Return shipment Before returning any FAFNIR equipment the returned goods authorization by the FAFNIR customer care is required. Please contact your account manager or the customer care to get the instructions for the return of goods. The return of FAFNIR equipment is possible only with authorization by the FAFNIR customer care.
  • Page 20 Accuracy Linearity better than ±0.2 mm or ±0.01 %, NT/LT digital component better than ±0.001 % per K Repetition accuracy better than 0.05 mm Resolution better than 10 µm Accuracy Linearity better than ±0.5 mm or ±0.025 %, HT/HHT digital component better than ±0.01 % per K Repetition accuracy better than 0.1 mm Resolution better than 50 µm...

  • Page 21: Float

    Float The float is a key component of the level sensor that must be matched to the medium in respect of density, pressure resistance and material durability. The following floats are exchangeable and are available to order separately. Other float types and materials are available on request.

  • Page 22: List Of Figures

    Figure 6: Installation on the bypass .................. 8 Figure 7: Wiring diagram TORRIX ..................9 Figure 8: Wiring diagram for TORRIX in a potentially explosive atmosphere ...... 9 Figure 9: Wiring ......................12 Figure 10: Removable screw terminal ................12 Figure 11: Adjustment of the measuring span ...............

  • Page 37: Edition

    Range of application Range of application The intrinsically safe equipment TORRIX Ex ... is used for the continuous measurement of liquid levels. The magnetostrictive measurement system detects the filling level by means of a float and the water level in case of a second float.
  • Page 38 Generally the device is maintenance-free. In case of a defect it must be send back to FAFNIR or one of his representations. I I I I V V V V...
  • Page 39 (T ) and the permitted liquid temperature (T ) shows the above tables or the EC-Type Examination Certificate. *Values in parentheses are valid for level sensor TORRIX Ex … SC … Page 3/3 FAFNIR GmbH Bahrenfelder Str. 19...
  • Page 40 FAFNIR GmbH Schnackenburgallee 149 c 22525 Hamburg Germany Tel.: +49 / 40 / 39 82 07–0 Fax: +49 / 40 / 390 63 39 E-mail: [email protected] Web: www.fafnir.com...

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