Dew-Point Transmitters
Easidew PRO I.S.
Intrinsically Safe Moisture Transmitter
The Easidew PRO I.S. transmitter is a reliable and accurate 2-wire dew-point transmitter for
trace moisture measurement in a wide range of gas and liquid process applications. Tough and
durable, with global certifi cations and approvals, it is suitable for natural gas, petrochemical and
refi nery applications.
Highlights
• Measurement range –110 to +20°Cdp
• ATEX, IECEx, CCSAUS, FM, TC TR Ex certifi ed
• Accuracy ±1°Cdp
• 2-wire 4–20 mA output
• Traceable 13-point calibration certifi cate
• 450 barg pressure rating
• Alternative process connections available
• Material certifi cation to BS EN 10204 3.1
• Moisture in gases and liquids
• Service exchange program
• Oxygen Service cleaned
www.michell.com
Applications
• Natural gas production and processing
• Pipeline drying
• Fiscal metering of gas
• LNG production processing and receiving terminals
• Petrochemical process liquids
• Catalyst protection
• Polymer production
• CNG drying
• Metallurgical furnace blanket gas
• Compressed air in hazardous areas
Dew-Point Transmitters
Easidew PRO I.S.
The Durable Intrinsically Safe
Dew-Point Transmitter
The Easidew PRO I.S. is designed to measure moisture in
demanding process and refi nery applications in either gases
or liquids. The transmitter offers a wide measurement
range of –110 to +20°Cdp, is easily integrated into existing
systems and has global certifi cations for use in hazardous
areas.
The unit’s robust housing protects the electronics from
harsh environmental conditions. Based on Michell’s ceramic
moisture sensing technology, 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 consistant lead times.
Ease of Installation
With an industry standard process connection, the Easidew
PRO I.S. is quick to install and easy to maintain.
Installation features:
• 5/8” process connection and G1/2”, 3/4” UNF adaptors
• Electrical connection via M20 gland
• 316 stainless steel transmitter sample block (optional)
• Transmitter mounting bracket (optional)
Global Certifi cations
The Easidew PRO I.S. dew-point transmitter has global
hazardous area certifi cation and traceable calibration to
national standards.
Hazardous area approvals:
• IECEx • ATEX
• CCSAUS (US & Canada) • FM
• TC TR Ex • CRN
Calibration approval:
• UKAS • NIST
Optional cleaning for enriched oxygen service
Moisture in Gases or Liquids
The Easidew PRO I.S. is confi gurable for measuring
moisture in both gases and hydrocarbon liquids.
Moisture in gases
The signal from the dew-point transmitter can be scaled to
parts per million by volume (ppm
area applications.
Measurement in ppm
requires a fi xed pressure input
V
) in gases in hazardous
V
of up to 40 MPa which has to be programmed into the
transmitter to accurately compensate gas stream pressure
(if different than atmospheric) to determine the true ppm
of water vapor in the measurement gas.
Factory programmed standard setting is: 0–3000 ppm
Moisture in liquids
The signal from the dew-point transmitter can be scaled to
parts per million by weight (ppm
area applications.
Measurement in ppmW requires 6-point saturation
constants of the liquid at various temperatures, these need
to be programmed into the transmitter to determine precise
ppmW of water vapor in the measurement liquid.
Factory programmed standard setting: 0–1000 ppm
Factory programmed common liquids:
• Butane • Isobutane • Pentane
• Methane • Propane • Ethane
• 1-Butene • Propylene • Cyclopentane
• Ethylene
) in liquids in hazardous
W
V
.
V
.
W
Flexible Confi guration
The Easidew PRO I.S. can be programmed to the following
standard settings:
• Dew-point range: –110 to +20°Cdp or –100 to
+20°Cdp
• Moisture content: 0–3000 ppm
• Pressure: 0 to 400 barg
• Temperature: °C or °F
• Saturation contant value (factory programmed common
liquids as above)
Non-standard settings are also available and may be
requested at the time of order or alternatively, modifi ed by
using the Easidew PRO I.S. communication kit and software
(see order codes).
or 0–1000 ppm
V
W
Speed of Supply
The transmitter is manufactured within Michell’s worldleading high-volume moisture transmitter manufacturing
center in the United Kingdom, which ensures reliability and
repeatability of delivery and fi eld supported by a network of
Michell’s global service centers.
• Calibration manufacturing system is traceable to NPL
and NIST standards
System Customization
If your application requires a customized sensor solution,
we have a specialized design and manufacturing facility to
cover your requirements.
www.michell.com
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