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Product Detail
Easidew PRO I.S.

Easidew PRO I.S.

Product Detail
Transmitter for Moisture Analysis - Michell Easidew PRO I.S.Intrinsically Safe Dew-Point Measurement in Hazardous Areas


Features

  • Measurement range –110...+20 °Cdp

  • ATEX, IECEx, UKCA, cQPSus, TR CU Ex certified

  • Accuracy ±1 °Cdp

  • 2-wire 4...20 mA output

  • Traceable 13-point calibration certificate

  • 450 barg pressure rating

  • Alternative process connections available

  • Material certification to BS EN 10204 3.1

  • Moisture in gases and liquids

  • Service exchange program

  • Oxygen Service cleaned

The Easidew PRO I.S. Intrinsically safe dew-point transmitter measures moisture in demanding process and refinery applications in either gases or non-polar liquids.

It offers a wide measurement range of –110 to +20 °Cdp, is easily integrated into existing systems and has global certifications for use in hazardous areas. The unit’s robust housing protects the electronics from harsh environmental conditions.

Based on Michell’s Ceramic Metal-Oxide Moisture Sensor, the Easidew PRO I.S. gives long term stability and a fast response to changes in moisture. With high-volume manufacturing capacity, the Easidew PRO I.S. is suitable for use by OEMs and systems integrators, who require short and consistent lead times.

Suitable Applications
  • Moisture in natural gas production and processing

  • Pipeline drying

  • On-line fiscal metering of gas

  • Dew-Point measurement in LNG production processing

  • Petrochemical process liquids

  • Trace humidity measurement in polymer production

  • Moisture analysis in CNG drying

  • Dew Points in I.S. areas

Specification

ProductEasidew PRO I.S. for GasesEasidew PRO LQ I.S. for Liquids
Performance Specifications
Measurement Range-110...+20 °C (-166...+68 °F) dew point;
-100...+20 °C (-148...+68 °F) dew point
0 to 1000 ppmW capability – factory configured to customer-required range and application
Accuracy±1 °C (±1.8 °F) dew point (+20...-60 °C / +68...-76 °F)
±2 °C (±3.6 °F) dew point (-60...-110 °C / -76...-166 °F)
Response Time5 mins to T95 (dry to wet)
Repeatability0.5 °C (0.9 °F) dew point
CalibrationTraceable 13-point calibration and certificate
Electrical Specifications
Output Signal4...20 mA (2-wire connection, current source); User configurable over range
OutputDew point or moisture contentMoisture content
Analog Output Scaled RangeDew point:-110...+20 °C (-166...+68 °F) or
–100...+20 °C (-148...+68 °F)
Moisture content in gas: 0...3000 ppmV
Non-standard :mg/m3, lbs/MMSCF natural gas
Moisture content in liquid: 0...1000 ppmW capability – factory configured to customer-required range and application
Supply Voltage12...28 V DC
Load ResistanceMax 250 Ω @ 12 V (500 Ω @ 24 V)
Current Consumption23 mA max, depending on output signal
Saturation Constants
(for moisture in liquids measurements only)

6-point look-up table for saturation constants up to 1000 ppmW over the temperature range 0...+50 °C (32...+122 °F); saturation constants for 10 common liquids can be programmed into the Easidew PRO LQ IS via the application software;
alternatively, the user can program saturation constants manually
CE & UKCA ConformityApproved
Operating Specifications
Operating Temperature–40...+60 °C (-40...+140 °F)
Compensated Temperature Range-20...+50 °C (-4...+122 °F)
NOTE: The transmitter accuracy statement is only valid for the temperature range: -20/+50 °C (-4/+122 °F)
Storage Temperature-40...+60 °C (-40...+140 °F)
Operating Pressure45 MPa (450 barg / 6526.7 psig) maximum
Flow rate
1...5 Nl/min mounted in standard sampling block
0...10 m/sec direct insertion
0.1...0.3 L/min through Easidew sample block
0.1...1 m/s direct insertion
Mechanical Specifications
Ingress ProtectionIP66 in accordance with standard BS EN 60529:1992;
NEMA 4 protection in accordance with standard NEMA 250-2003
Intrinsically safe area certificates*ATEX/UKCA: II 1 G Ex ia IIC T4 Ga (–20 °C...+70 °C)

IECEx: Exd 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
Russian Pattern ApprovalRussia (GOST-R), Kazakhstan (GOST-K)
Canadian Pressure Vessel CertificationC.R.N. — 11 Canadian provinces
Oxygen service
Optional: cleaned for enriched oxygen
Housing material316 stainless steel
Filter
(sensor protection)
Standard: Stainless steel sintered guard (for protection against fine particulate >80μm)
Optional: HDPE guard (for protection against fine particulate >10μm)
Process Connection and Material316 stainless steel 5/8” — 18 UNF with bonded seal, G1/2” and 3/4” UNF adaptors available
(material certificate to BS EN 10204 3.1 — see ‘accessories and spare parts’ on product order codes)
Weight1.27 kg (2.8 lb)
Electrical ConnectionsScrew terminal via female M20 x 1.5mm gland
Diagnostic conditions (factory programmed)Condition            Output
Sensor fault            23 mA
Under-range dew point   4 mA
Over-range dew point   20 mA
Approved galvanic isolatorsKFD2-CR-EX1.20200
KFD2-CR-EX1.30200
KFD0-CS-EX2.50P
KFD0-CS-EX1.50P
KFD2-STC4-EX1.H
MTL5040
MTL5541
MTL5041