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Dynisco MDT Series Operating Manual

4-20ma with auto zero pressure transmitters with integrated amplifier for high temperatures and high pressures
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Summary of Contents for Dynisco MDT Series

  • Page 2 MDT Series 4-20mA with Auto Zero Pressure transmitters with integrated amplifier for high temperatures and high pressures...

  • Page 3: Table Of Contents

    Table of Contents Content Chapter Page Icon General Notes on safety Technical data Function Transport/ delivery Installation Commissioning Maintenance Accessories Troubleshooting - Declaration of conformity...

  • Page 4: General

    Following the safety instructions will help to prevent accidents, defects and malfunctions. DYNISCO will not be held liable for any injury, loss or damage resulting from failure to follow the instructions in this manual.
  • Page 5 Explanation of icons The manual uses icons to indicate information pertaining to safety: Risk of destruction or damage to equipment, machines or installations General danger to life or limb Specific danger to life or limb You MUST do this The safety instructions are provided again in the individual chapters of the manual.

  • Page 6: Notes On Safety

    Mercury is hazardous waste and must be disposed of in accordance with applicable laws. DYNISCO will accept defective PTs. If mercury escapes, use airtight packaging! When planning machinery and using the PT, follow the safety and accident prevention regulations that apply to your application, e.g.:...

  • Page 7: Technical Data

    Technical Data Ordering guide Ordering example Performance characteristics 3.3.1 Accuracy 3.3.2 Repeatability 3.3.3 Resolution Mechanical configurations Pressure side connection Pressure ranges 3.6.1 Pressure ranges in bar 3.6.2 Max. Overload 3.6.3 Burst pressure 3.6.4 Limit frequency Rigid stem/flexible stem Electrical Data Temperature influence 3.10 EMC requirements 3.11 Materials...
  • Page 8 Performance characteristics (xDT4Xx x-xx-xxx-xx) 3.3.1 Accuracy (Linearity and hysteresis at T = constant) xDT42x x ± 0,5 % of full scale (35 bar and 50 bar ± 1 % of full scale) xDT46x x ± 1 % of full scale 3.3.2 Repeatability xDT42x x ±...
  • Page 9 3.6.2 Max. Overload (without influencing operating data) 2 x full scale pressure up to 700 bar (for 1000 bar and 1400 bar range: max. 1750 bar, and 2450 bar for the 2000 bar range) 3.6.3 Burst pressure 6 x nominal value, max.
  • Page 10 Zero shift due to temperature change on electronics housing xDT 420 x series ±0,2% full scale / 10 °C typ. xDT 460 x series ±0,2% full scale / 10 °C typ. Sensitivity shift due to temperature change on electronics housing xDT 420 x series ±0,2% full scale / 10 °C typ.
  • Page 12 Operating manual...
  • Page 14 Operating manual...

  • Page 15: Function

    Function Construction Description of functions PT series Construction The PTs of series MDT 420 x/460 x are industry standard. The main advantages are: manufactured under ISO 9001 thermal stability resistance to aggressive media insensitivity to electromagnetic radiation (EMC) liquid-filled transmission system (mercury) pressure measurements in plastic melt up to a temperature of 400°C (750°F) maximum pressure 2000 bar...
  • Page 16 Separating diaphragm 0.15 mm thick PT series The MDT series PTs are also available as PT series. The PT types correspond to the MDT models, and the TPT types correspond to the TDT models; the number codes are identical. The PT series differs from the MDT series in that all specifications are given in US American units of measure.

  • Page 17: Transport/ Delivery

    If mercury is inhaled or swallowed, seek medical attention immediately. Mercury is hazardous waste and must be disposed of in accordance with applicable laws. DYNISCO will accept defective PTs. If mercury escapes, use airtight packaging! ESD sensitive component. Electrostatic discharge may damage the PT. Take ESD precautions.

  • Page 18: Installation

    Mounting hole To produce the mounting hole, use only DYNISCO machining tool kit. Drill the mounting hole as shown in figure 06. Fig. 06: Mounting hole for transmitter MDT 420 x, 460 x, 422 x, 462 x, 432 x, 463 x...

  • Page 19: Mounting Hole

    - free from marks and rough edges - free from solidified plastic residue. Checking the mounting hole Paint the test bolt DYNISCO on the marked area (figure 08, item 1) with marking ink up to the thread. Fig. 08: test bolt with marking ink...

  • Page 20: Mounting The Pressure Transmitter

    Before mounting the PT, ensure that the mounting hole is free from plastic residue. Remove plastic residue with the DYNISCO cleaning tool kit. A test bolt is included with this cleaning set. To prevent the PT from sticking permanently...

  • Page 21: Mounting Pts With Flexible Stem

    (MDT 435 x / 467 x) The connector must be easily accessible. Mount the electronics housing of the PT with the fastening clip DYNISCO P/N 200982 (included). See mounting example in figure 09. Additionally secure the flexible stem between the electronics housing with a standard cable clip.

  • Page 22: Electrical Connection

    EMC requirements. If the electrical connection is not executed as described in Chapter 6.5.1, or if cable/cable sockets / PG couplings other than those prescribed by DYNISCO are used, then DYNISCO cannot warrant compliance with EMC requirements. 6.5.1 EMC /...

  • Page 23: Wiring

    Pin assignment Standard model MDT 4xx x-xxx-xx: Connector: 6-pin male, Bendix PT02A-10-6P Cable socket: PT06A-10-6S(SR) Fig. 10: 6-pin female connector Designation signal (+) signal (-) do not connect autozero calibration shunt 80% common autozero/cal Top view solder side The connector housing is connected conductively to the housing of the PT.

  • Page 24: Connection Thermocouple

    Connection thermocouple/RTD element (optional) MDT / TPT series Fig. 15: Thermocouple Fig. 16: RTD connection connection υ 584-1...

  • Page 25: Commissioning

    Commissioning Supply voltage Calibration Zero adjustment Operation Before putting the PT into operation, make sure the PT is securely mounted and sealed. Supply voltage Using a supply voltage which is different from that stated in the technical specifications or has reversed polarity can damage the PT or cause it to malfunction.

  • Page 26: Ambient Temperature For The Electronics

    Fig. 17: Electronics housing lid Zero adjustment Use the button in the lid of the electronics housing for adjustment. For MDT series PT reset 420 x/460 x zero at operating temperature! Remove cover screw. PT must be depressurized. Wait until a constant operating temperature is set on the pressure transducer.

  • Page 27: Maintenance

    Maintenance Maintenance Thermocouple replacement TDT models 28 Repair/disposal Maintenance Mounting and electrical connection of the PT must be done by specialists with EMC training, following all applicable regulations, and in pressureless, voltage-free condition with the machine switched off. The machine must be secured against being switched back on! Burn hazard! The PT must be removed with the melt in...
  • Page 28 Thermocouple replacement TDT models A defective thermocouple is easy to replace. Loosen the hexagon socket screw at the top end of the sensor stem. Remove the defective thermocouple from the probe stem. When fitting the new thermocouple, the pressure transmitting capillary must be located in the slot of the thermocouple.
  • Page 29 Mercury is hazardous waste and must be disposed of in accordance with applicable laws. DYNISCO will accept defective PTs. If mercury escapes, use airtight packaging! Please send defective PTs to your DYNISCO representative. For addresses, see the back cover of the operating manual.

  • Page 30: Accessories

    Accessories Machining tool kit ½"-20UNF-2A 8BRD0004 Machining tool kit M18 x 1,5 8BRD0005 Cleaning tool kit ½"-20UNF-2A 8BRD0009 Cleaning tool kit M18 x 1,5 8BRD0006 Pressure sensor simulator Pressure sensor calibrating device Connectors, Cable glands, Cable Designation Order No. Female connector DIN 7.pin E311 0035 Female connector Bendix E311 0029...

  • Page 31: Troubleshooting

    Adjust to max. Mounting torque 50 Nm mounting too high torque Check mounting Plug forming in No signal change hole; remove front of diaphragm despite pressure rise solidified plastic Send pressure Diaphragm transmitter to damaged DYNISCO for repair...

  • Page 32: Declaration Of Conformity

    MDT 2-wire technology 4-20mA is developed, constructed, and produced in accordance with EU Directives 89/336/EEC, 93/68/EEC, 93/44/EEC. Conformity with the directives is the sole responsibility of: Dynisco Europe GmbH Wannenäckerstr. 24 D-74028 Heilbronn The following harmonized standards apply: DIN EN 61000-6-3:2001 Electromagnetic compatibility (EMC) –...
  • Page 33 Visit us in the world wide web: Dynisco Instruments Dynisco UK Ltd. 38 Forge Parkway Silver Birches Business Park Franklin, MA 02038 Aston Road, Bromsgrove Worcestershire B60 3EU Great Britain Tel: +1 508 541 9400 Fax: +1 508 541 9437 Tel: +44 1527 577077 Email: InfoInst@dynisco.com...

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