Easidew Dew-Point Transmitter for Compressed Air

Compressed Air Related Products
Simple to install and maintain, the Easidew sensor is a moisture meter measuring dew point and moisture content and is available with a range of process connections and electrical connectors. All Easidew dew-point transmitters are available with a service exchange program which reduces the cost of maintenance.

Michell’s Advanced Ceramic Moisture Sensor technology based Hygrometers are calibrated to international standards and are delivered with a traceable calibration certificate.


  • Dew point in compressed air
  • Dew points in breathing air
  • Analysing moisture in Hydrogen coolant
  • Industrial Gases: Inert and bulk
  • Moisture content in Glove boxes
  • Welding gases
  • Dew-Point in I.S. areas
  • Trace humidity in oxygen purity

3D CAD files (Step)

  • Includes
    • Easidew 5/8 UNF
    • Easidew 34 3/4 UNF
    • Easidew M12 5/8 UNF
    • Easidew M12 3/4 UNF
    • Easidew M12 G1/2
    • Download now
Easidew Transmitter Series

Technical Specifications

Easidew, Easidew M12 and Easidew 34 TransmitterEasidew I.S. Transmitter
Performance Specifications
Measurement range–110 to +20°C dew point; –100 to +20°C dew point; non standard ranges available on request
Accuracy±2°C dew point*
Response time5 mins to T95 (dry to wet)
Repeatability0.5°C dew point
CalibrationTraceable 13 point calibration certificate
Electrical Specifications
Output signal4–20 mA (2-wire connection, current source); User configurable over range
Easidew M12: Modbus RTU over RS485
OutputDew point or moisture content
Analog output scaled rangeDew point: –110 up to +20°C; Moisture content in gas: 0– up to 3000 ppmV;
Supply voltage12 to 28 V DC
Load resistanceMax 250 Ω @ 14 V (500 Ω @ 24 V)
Current consumption23 mA max, depending on output signal
CE conformityApproved
UL61010-1 & CAN/CSA C22.2 No. 61010-1
Operating Specifications
Operating temperature-40 to +60°C
Compensated temperature range-20 to +50°C
Storage Temperature-40 to +60°C
Operating pressure45 MPa (450 barg) maximum
Flow rate1 to 5 Nl/min mounted in standard sampling block; 0 to 10 m/sec direct insertion
Mechanical Specifications
Ingress protectionIP66 in accordance with standard BS EN 60529:1992; NEMA 4 protection in accordance with standard NEMA 250–2003
Easidew M12: IP65
Intrinsically safe area certificatesATEX: II 1 G Ex ia IIC T4 Ga (-20 to +70 °C) IECEx: EX ia IIC T4 Ga (-20 to +70 °C) TC TR@ 0Ex ia IICT4 Ga (-20 to +70 °C) FM: Class I, Division 1, Groups A B C D, T4 CCSAUS: Class I, Division 1, Groups A B C D, T4
Oxygen service Optional: cleaned for enriched oxygen
Housing material316 stainless steel
DimensionsMiniDIN 43650 form C L=132mm x ø45mm (with connector cable)
Easidew M12: M12 5 pin L = 155mm x ø45mm (with connector cable)
Filter (sensor protection)Standard: HDPE <10μm
Optional: 316 stainless steel sintered guard <80μm
Process connectionEasidew: 5/8” - 18 UNF
Easidew 34: 3/4” - 16 UNF
Easidew M12: 5/8” -18 UNF, 3/4” - 16 UNF, G1/2” BSP
5/8” -18 UNF, 3/4” - 16 UNF, G1/2” BSP
Electrical connectionsEasidew: MiniDIN 43650 form C
Easidew M12: M12 5 Pin (A coded)
MiniDIN 43650 form C
Mating Electrical ConnectorsMating connector supplied as standard
Easidew M12: optional 0.8, 2, 5 metre M12 A coded connector/cable available
Diagnostic conditions (factory programmed)Conditions
Sensor fault
Under-range dew point
Over-range dew point
23 mA
4 mA
20 mA
Approved galvanic isolatorsKFD2-CR-EX1.20200
NOTES * Over Compensated Temperature Range


Compressed Gas Breathing Air Beverage Industry Automotive General Engineering Drying Of Plastics Military / Defense Research & Development General Gases

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