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Dew-Point Transmitter - Michell Easidew EA2

Updated:2025-03-13

Brand: PST/Michell
Model: Easidew EA2
Description: 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.
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Product Details

Dew-Point Transmitter - Michell Easidew EA2 Description：

Product Manual

Moisture Transmitter for Safe and Hazardous Areas

Features

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

MiniDIN 43650, M12 electrical connectors

5/8” UNF, 3/4” UNF, G 1/2” process connections

Oxygen Service cleaned

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.

Reconfiguration of the transmitters is simple with the self-contained Easidew and Pura communications kit.

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

Specification

	Easidew, Easidew M12 and Easidew 34 Transmitter	Easidew 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 time	5 mins to T95 (dry to wet)
Repeatability	0.5°C (0.9°F) dew point
Calibration	Traceable 13-point calibration certificate
Electrical Specifications
Output signal	4...20 mA (2-wire connection, current source); User configurable over range Easidew M12: Modbus RTU over RS485
Output	Dew point or moisture content
Analog output scaled range	Dew point: –110 up to +20°C (-166 up to +68°F); Moisture content in gas: 0 up to 3000 ppm_V;
Supply voltage	12...28 V DC
Load resistance	Max 250 Ω @ 14 V (500 Ω @ 24 V)
Current consumption	23 mA max, depending on output signal
Compliances	CE & 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 pressure	45 MPa (450 barg/6527 psig) maximum
Flow rate	1...5 Nl/min mounted in standard sampling block; 0...10 m/sec direct insertion
Mechanical Specifications
Ingress protection	IP66 in accordance with standard BS EN 60529:1992; NEMA 4 protection in accordance with standard NEMA 250–2003 Easidew M12: IP65
Intrinsically safe area certificates		ATEX: 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 service	Optional: cleaned for enriched oxygen
Housing material	316 stainless steel
Dimensions	MiniDIN 43650 form C L=132mm x ?45mm (5.2” x ?1.77”) (with connector cable) Easidew M12: M12 5 pin L = 155mm x ?45mm (6.1” x ?1.77”) (with connector cable)
Filter (sensor protection)	Standard: HDPE <10μm Optional: 316 stainless steel sintered guard <80μm
Process connection	Easidew: 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 Accessories	Flange for 5/8” 18 UNF & 3/4” 16 UNF process connections
Weight	150g (5.29oz)
Electrical connections	Easidew: MiniDIN 43650 form C Easidew M12: M12 5 Pin (A coded)	MiniDIN 43650 form C
Mating electrical connectors	Mating 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 isolators		KFD2-CR-EX1.20200 KFD2-CR-EX1.30200 KFD0-CS-EX1.50P KFD0-CS-EX2.50P KFD2-STC4-EX1.H MTL5041 MTL5040
NOTES * Over Compensated Temperature Range