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Observator 100 years

OMC-443 Temperature Sensor

The air temperature sensor OMC-443 provides an accurate measurement of temperature, using a Pt100 sensing element. A build-in amplifier is provided with a 4…20 mA output. This corresponds with –40 to +60 deg. C. Of course other ranges are available on request. The OMC-443 has a 1” NPT connection and fits in the OMC-422.

Additional documents


  • Measuring range –40 to +60 deg. C
  • Accuracy < ± 0.3 deg. C
  • Reproducibility < ± 0.1 deg. C
  • Time constant 10 sec.
  • Linear output 4…20 mA
  • Measuring system Pt100, DIN class A
  • Connection 2-wire

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