SIEMENS SITRANS TH300 Temperature Transmitter


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Siemens SITRANS TH300, featuring HART protocol, is compatible with a wide range of resistance thermometers, thermocouples, resistance sensors, and millivolt signals. Its configuration is quick and simple, facilitated by SIMATIC PDM or a handheld device. Notably service-friendly, this transmitter allows for direct reading of the 4 – 20mA loop value without signal interruption, enabling seamless maintenance procedures


  • Measures temperature with a linear output signal
  • High accuracy across entire ambient temperature range
  • Reduces plant noise
  • Alarm signal for sensor break or short-circuit according to NAMUR 43
  • Electro magnetic compatibility (EMC) according to DIN EN 61326 and NE21
  • Save expensive compensation cables with internal reference junction
  • Galvanic insulation for accuracy and safety in thermocouple applications
  • Single- or dual-point trim
  • Custom characteristic curve for application of non-standard sensors
  • Difference- and average measurement
  • Extensive diagnosis: e.g. drag indicator and time meter
  • Set of output current for simulation
  • Explosion protected variants for US, Canada and Europe
  • Rugged design, fully potted electronics

Product Data Sheet – Siemens SITRANS TH300 Temperature Transmitter

Operation Manual – Siemens SITRANS TH300 Temperature Transmitter


Application Temperature Transmitter

(Measuring Range)

Resistance thermometers, thermocouples, resistance-type sensors, DC sources
Output 4 … 20 mA, 2-wire
Measuring Accuracy Dependent on configuration
Operating conditions Cable End: -40° … +80 °C (-40 … +176 °F)
Degree of Protection Enclosure




Weight 50 g (0.11 lb)
Electrical Connections Wired direct
Explosion Protection ATEX
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SIEMENS SITRANS TH300 Temperature Transmitter

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