PDT Dewpoint Transmitter for GeneralApplications

  • Long-lasting bulk Polymer sensing element offers excellent accuracy, stability and response speed
  • Various dewpoint ranges available, -60 °C to 50 °C
  • Compact 2 Wire 4-20 mA Loop Powered Dewpoint Transmitter
  • Economical solution for higher ‘wetter’ dewpoints, e.g., monitoring refrigerant driers
  • IP66 / NEMA 4 Weatherproof Protection
  • Optional Sensor Holder/Sample Cell for optimum sampling conditions
  • Supplied with a calibration certificate traceable to National and International Humidity standards

The PDT Dewpoint Transmitter utilises a bulk Polymer sensing element. It is an economical choice for higher ‘wetter’ dewpoints where your application only requires readings down to -60 °C dewpoint, e.g., monitoring refrigerant driers. Three dewpoint ranges are offered: -60 °C to 20 °C dewpoint, -40 °C to 30 °C dewpoint and -20 °C to 50 °C dewpoint.

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Transmitter Type 2 Wire, 4-20 mA Loop Powered Transmitter
Sensing Element Polymer
Output Signal Linear 4 to 20 mA with selectable engineering units
Power supply 24 Vdc (10 Vdc – 30 Vdc)
Dewpoint Ranges See datasheet
Electromagnetic Compatibility (EMC) Complies with BS EN ICE 61326-1
Accuracy ± 2 °C dewpoint (UK National Physical Laboratory traceable for range -90 °C to 20 °C)
Operating Temperature (Ambient and Process) -20 °C to 70 °C
Operating Humidity (Ambient) Maximum 95 %RH Non-Condensing
Pressure Range -1 to 50 bar
Factory Calibration Supplied with a calibration certificate traceable to National and International Humidity standards. We recommend annual laboratory calibration.
Sample Flow Rate Flow independent, ideally 2 to 3 L/min
Electrical Connection M12, 5-pole
Mechanical Connection G1/2”
Transmitter Body Zinc alloy, PC, ABS
Sensor Protection 316 Sintered stainless steel filter – 50 micron
Ingress Protection IP 65 / NEMA 4 when Connector coupled to Transmitter
Manufacturer’s Warranty 12 months in case of defective parts or faulty workmanship

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