Dew-Point Transmitter

Easidew EA2

The Easidew sensor is a moisture meter that measures both dew point and moisture content. It is simple to install as it is available with a wide range of process connections and electrical connectors. All Easidew dew-point transmitters are available with a service exchange program which reduces the cost and time spent on maintenance.s


  • Measurement ranges -110 up to +20°Cdp
  • Dew point or ppmV moisture content output
  • Accuracy ±2 °Cdp
  • Traceable calibration certificate
  • Easidew I.S. IECEx, cQPSus, ATEX and UKCA approvals
  • Low cost of ownership and easy maintenance with sensor exchange program
  • 316 Stainless steel sensor and sample blocks
  • 5/8” UNF, 3/4” UNF, G 1/2” process connections
  • MiniDIN 43650, M12 electrical connectors
  • Oxygen Service cleaned
Easidew, Easidew M12 and Easidew 34 TransmitterEasidew I.S. Transmitter
Performance Specifications
Measurement range–110...+20°C (-166...+68°F) dew point; –100...+20°C (-148...+68°F) dew point; non standard ranges available on request
Accuracy±2°C (±3.6°F) dew point*
Response time5 mins to T95 (dry to wet)
Repeatability0.5°C (0.9°F) 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 (-166 up to +68°F); Moisture content in gas: 0 up to 3000 ppmV;
Supply voltage12...28 V DC
Load resistanceMax 250 Ω @ 14 V (500 Ω @ 24 V)
Current consumption23 mA max, depending on output signal
CompliancesCE & UKCA
UL61010-1 & CAN/CSA C22.2 No. 61010-1
Operating Specifications
Operating temperature-40...+60°C (-40...+140°F)
Compensated temperature range-20...+50°C (-4...+122°F)
Storage temperature-40...+60°C (-40...+140°F)
Operating pressure45 MPa (450 barg/6527 psig) maximum
Flow rate1...5 Nl/min mounted in standard sampling block; 0...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...+70 °C / -4...+158°F)
IECEx: EX ia IIC T4 Ga (-20...+70 °C / -4...+158°F)
TR CU @ 0Ex ia IICT4 Ga (-20...+70 °C / -4...+158°F)
cQPSus: Class I, Division 1, Groups A, B, C & D, T4
Class I, Zone 0, AEx ia IIC T4 Gb, Ex ia IIC T4 Gb
Tamb +70 °C
Oxygen serviceOptional: cleaned for enriched oxygen
Housing material316 stainless steel
DimensionsMiniDIN 43650 form C L=132mm x ø45mm (5.2” x ø1.77”) (with connector cable)
Easidew M12: M12 5 pin L = 155mm x ø45mm (6.1” x ø1.77”) (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
KF40 Flange AccessoriesFlange for 5/8” 18 UNF & 3/4” 16 UNF process connections
Weight150g (5.29oz)
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 (2.62, 6.56, 16.4 foot) M12 A coded connector/cable available
Diagnostic conditions (factory programmed)Conditions
Sensor fault: 23 mA
Under-range dew point: 4 mA
Over-range dew point: 20 mA
Approved galvanic isolatorsKFD2-CR-EX1.20200
NOTES * Over Compensated Temperature Range