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Intrinsically Safe Dew-Point Transmitter - Easidew I.S.

Updated:2025-03-13

Brand: PST/Michell
Model: Easidew I.S.
Description: The Easidew I.S. (intrinsically safe) is designed to measure trace moisture and water dew-point in hazardous area applications. It is certified for measuring trace moisture in flammable or explosive g
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Product Details

Intrinsically Safe Dew-Point Transmitter - Easidew I.S. Description：

Product Manual

Moisture Measurement in Hazardous Areas

Features

Measurement ranges -110 up to +20 °Cdp

Dew point or ppmV moisture content output

2-wire loop power connection

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

KF40 Glove box flange

Oxygen service cleaned

The Easidew I.S. (intrinsically safe) is designed to measure trace moisture and water dew-point in hazardous area applications. It is certified for measuring trace moisture in flammable or explosive gases and a wide range of non-polar liquids. It carries global hazardous area certification from IECEx, cQPSus, ATEX, and UKCA.

The Easidew I.S. is available with a choice of process connections for easy installation or retrofit.

Specifications

Performance

Measurement Range

-100...+20°C dew point
-110...+20°C dew point

Accuracy

±2°C dew point

Response Time

5 mins to T95 (dry to wet)

Repeatability

0.5°C dew point

Calibration

Traceable 7-point calibration certificate

Electrical Specifications

Output Signal

4...20 mA (2-wire connection, current source)
User-configurable over range

Output

Dew point, moisture content in ppm_V

Analog Output Scaled Range

Dew point: -100...+20°C
Moisture content in gas: 0 - 3000 ppm_V
Non-standard available upon request

Supply Voltage

12...28 V DC

Load Resistance

Max 250 Ω @ 12 V (500 Ω @ 24 V)

Current Consumption

20 mA max

Compliances

CE & UKCA

Operating Specifications

Operating Temperature

-40...+60°C

Compensated Temperature Range:

-20...+50 °C
NOTE: The transmitter accuracy statement is only valid for the temperature range: -20/+50 °C

Storage Temperature:

-40...+60 °C

Operating Pressure

45 MPa (450 barg) maximum

Overpressure Rating

x2 operating pressure 90 MPa (900 barg)

Flow Rate

1...5 Nl/min mounted in standard sampling block
0...10 m/sec direct insertion

Mechanical Specifications

Ingress Protection Sensor

IP66 in accordance with standard BS EN 60529:1992
NEMA 4 in protection accordance with standard NEMA 250-2003

Hazardous Area Certificates

ATEX/UKCA: II 1 G Ex ia IIC T4 Ga (–20 °C...+70 °C)
IECEx: Ex ia IIC T4 Ga (–20 °C...+70 °C)
TR CU: 0Ex ia IIC T4 Ga (–20 °C...+70 °C)
cQPSus: IS, Class I, Division 1, Groups A, B, C & D, T4
Class I, Zone 0, AEx ia IIC T4 Ga, Ex ia IIC T4 Ga
Tamb +70°C

Housing Material

316 Stainless steel

Dimensions

L=132mm x ?45mm (with connector)

Filter (Sensor Protection)

Standard: HDPE Guard <10μm
Optional: 316 stainless steel sintered guard <80μm

Process Connection and Material

5/8"- 18 UNF
Alternatives: G1/2" BSP or 3/4"- 16 UNF 316 stainless steel

Weight

150g

Interchangeability

Fully interchangeable transmitter