SIEMENS SITRANS TH320 Temperature Transmitter


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Siemens SITRANS TH320 transmitters are versatile across all industries. Their compact size allows for installation in connection heads of type B or larger. The universal input module accommodates various sensors/signal sources, including:

  • Resistance thermometer (2-wire, 3-wire, 4-wire connection)
  • Thermocouples
  • Linear resistance, potentiometer, and DC voltage sources


Equipped with an HART communications interface, these transmitters offer:

  • A load-independent direct current output from 4 to 20 mA, aligned with the input characteristic, and augmented by the digital HART signal.

Transmitters designed for “intrinsically safe or Zone 2 increased safety” protection can be safely deployed in hazardous areas. Compliant with EU Directive 2014/34/EU (ATEX), FM, CSA regulations, and other national standards, these devices ensure reliability and safety in diverse environments.

  • Compact design
  • Flexible mounting and center hole allow you to select your preferred mounting type
  • Galvanic isolation
  • Test terminals for ammeter
  • Diagnostics LED (green/red)
  • Input monitoring wire break and short-circuit
  • Self-monitoring
  • Configuration status stored in EEPROM
  • SIL2/3 (with order note C20)
  • Expanded diagnostic functions, such as slave pointer, operating hours counter, etc.
  • Special characteristic
  • Electromagnetic compatibility according to EN 61326 and NE21

Product Data Sheet – Siemens SITRANS TH320 Temperature Transmitter

Operation Manual – Siemens SITRANS TH320 Temperature Transmitter


Application Temperature Transmitter

(Measuring Range)

Resistance thermometers, thermocouples, resistance-type sensors, DC sources
Output 4 … 20mA (SITRANS TH320), HART (SITRANS TH320/420)
Measuring Accuracy Dependent on configuration
Operating conditions Standard: -50 … +85 °C (-58 … +185 °F)
SIL: -40 … +80 °C (-40 … 176 °F)
Degree of Protection Enclosure




Weight 50 g (0.11 lb)
Electrical Connections Wired direct
Explosion Protection IECEx
General Approvals SIL2/3
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SIEMENS SITRANS TH320 Temperature Transmitter

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