TMT31 iTEMP head mount temperature transmitter

Accurate and reliable process temperature measurements for RTD sensors

Previous: iTEMP Pt TMT180, iTEMP RTD TMT187

• Measuring principle

  Head transmitter

• Input

  1x Pt100 / Pt1000

• Output

  1 x analog 4...20 mA

• Auxiliary power supply

  10...36 V DC

• Communication

  pc-programmable

• Installation

  Terminal head form B

• Accuracy

  (Pt100,Pt1000, -50…+250°C) <= 0,1 K
  (Pt100,Pt1000, -58…+482°F) <= 0,18° F

• Galvanic isolation

  no

• Certification

  ATEX II3G Ex ec IIC Gc
  CSA C/US General Purpose
  CSA C/US NI Cl.I Div.2 Gr.A-D,Ex ec IIC Gc
  ATEX II3G Ex ec IIC Gc + CSA C/US Ex ec IIC Gc
  DNV (GL) marine approval

The iTEMP TMT31 is a reliable, long-term stable, single-channel 4 to 20 mA temperature transmitter for thermometers with terminal head Form B suited for use in Zone 2 / Div. 2 areas. Individual transmitter-sensor matching with Callendar-Van Dusen linearization further improves your temperature measurement accuracy for RTD sensors. Push-in terminals for quick wiring facilitate installation. The device is available pre-configured or can easily be parametrized using free software tools.

• Highly accurate and reliable temperature measurement for various industrial and hygienic process applications

• Certified for use in Zone 2 (Ex ec) / Div. 2 areas

• Input: Single RTD sensor input for Pt100 or Pt1000 (2-/3- or 4-wire) sensors

• Output: 4 to 20 mA analog output

• Configurable or factory-set fixed parameters

• Installation in terminal heads Form B as per DIN EN 50446

• Push-in terminals for fast, tool-free wiring during installation or maintenance

• Simple parametrization via free software tools (requires FXA291 or TXU10)​

• Transmitter-sensor matching using Callendar-Van Dusen linearization for critical measurement points​

• Improved RTD measurement accuracy up to 0.1 K and long-term stability

• Diagnostics information according to NAMUR NE 107

• Ready-to-use: Factory pre-configured