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Dew-Point Transmitters
Easidew PRO XP
Explosion Proof Moisture Transmitter
The Easidew PRO XP transmitter is designed to reliably and accurately measure dew point or
moisture content in a wide variety of gas or liquid process applications. The robust mechanical
design minimises installation time and provides a robust and reliable transmitter for all global
explosion and fl ameproof applications.
Highlights
• Measurement ranges -110 up to +20°Cdp
• Global explosion / fl ameproof certifi cation
• Accuracy ±1°Cdp
• 2-wire 4-20 mA output
• Traceable 13-point calibration certifi cate
• 450 bar pressure rating
• 3/4” UNF industry standard process connection
• EN 10204 3.1 material certifi cation
• Moisture in gases and liquids
• Integral display meter
• Electronics Conformal Coating
• Oxygen Service Cleaned
www.michell.com
Applications
• Natural gas processing / transmission
• Polymer production
• Biomethane gas production
• Hydrogen coolants
• LNG & LPG production
• Inert & bulk gases
• CNG production
• Hydrocarbon refi nery processing
• Heat treating furnaces
• Catalyst protection
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Dew-Point Transmitters
Easidew PRO XP
The Global Explosion Proof Transmitter
For OEM system integrators and process refi neries there is a
critical need to have one rugged transmitter in stock, which
covers all their explosion proof system needs, irrespective of
worldwide location.
The Easidew PRO XP moisture transmitter is ATEX,
IECEx, and GOST globally certifi ed within a single design
for use in any North American, European or Asian zone,
minimizing cost of stock ownership.
The transmitter has a wide dew-point measurement range
of –110 to +20°Cdp with industry-standard process and
electrical connections, ensuring low installation costs.
The Easidew PRO XP incorporates the latest Michell
advanced ceramic technology providing stable and reliable
measurements for all new and replacement moisture
applications.
The unit can also be supplied with an integral 4 digit LED
display, displaying the confi gured moisture output signal.
CCSAUS,
Ease of Installation
Our in-house design team have developed the product
mechanics to ensure the unit can be quickly and economically
installed.
• Electrical industry standard process housing with dual
conduit entry
• US Industry Standard 3/4” UNF Viton
connection
• On-site re-ranging and diagnostic communications tool
• 316 stainless steel transmitter sample block
• Transmitter mounting bracket
• 316 stainless steel housing for offshore applications
(ATEX, IECEx &
• 316 Stainless Steel Tag
CCSAUS approved)
®
O-ring process
Global Certifi cations
The Easidew PRO XP uniquely has worldwide explosion and
fl ameproof certifi cations to ensure a single unit has global
acceptability.
• Explosion proof approval — CCSAUS (US and Canada)
• Flameproof approval — ATEX
• Flameproof approval — IECEx
• Flameproof approval — TC TR Ex
• Canadian pressure vessel approved (CRN)
• EMC/RFI — 2014/30/EU EN 61326-1:2006
Safety and Integrity
The mechanical design considers the health and safety
requirements of the end user offering an ultra-high process
pressure barrier, along with meticulous levels of product
traceability and quality.
• High performance 450 bar process media barrier
• No process media entry into the process housing
• Gas wetted parts BS EN 10204 3.1 material certifi ed
• 13 point calibration certifi cate
• ISO 9001 quality system
• Electronics Conformal Coating
• Optional cleaning for enriched oxygen service
Measurement Performance
The transmitter uses Michell’s market leading ceramic
measurement technology coupled with the latest generation,
sophisticated microcontroller electronics to provide accurate
and stable measurement across the Easidew PRO XP product
life.
• Accuracy ±1°Cdp
• Fast response to moisture changes
Flexibility of Ownership
The Easidew PRO XP has a secondary RS485 communication
system, which gives customers the opportunity to re-range
and re-scale a unit for a variety of gas and non-polar liquid
moisture measurements.
• Re-ranging 4–20 mA within the –110 to +20°Cdp range
• Moisture scaling — dew point, ppm
, 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
Integral Display
The Easidew PRO XP EX2 has an integral display meter
providing local indication of the transmitted analog output in
the confi gured moisture scale.
System Customization
If your application requires a customized sensor solution, we
have a specialized design and manufacturing capability to
cover your requirements.
www.michell.com
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Dew-Point Transmitters
Technical Specifi cations
Performance Specifi cations
Measurement range –110 to +20°C dew point; –100 to +20°C dew point 0 to 1000 ppmW; Non-standard available on request
Accuracy ±1°C dew point (+20 to –60°C); ±2°C dew point (–60 to –110°C)
Response time 5 mins to T95 (dry to wet)
Repeatability 0.5°C dew point
Calibration Traceable 13 point calibration and certifi cate
Electrical Specifi cations
Output signal 4–20 mA (2-wire connection, current source); User confi gurable over range
Output Dew point or moisture content Moisture content
Analog output scaled
range
Dew point: –110 to +20°C; Moisture content in gas:
0–3000 ppm
Supply voltage 14 to 28 V DC
Load resistance Max 250 Ω @ 14 V (500 Ω @ 24 V)
Current consumption 23 mA max, depending on output signal
Saturation constants
(for moisture in liquids measurements
only)
CE conformity Approved
Operating Specifi cations
Operating temperature –40 to +60°C
Compensated Temperature
Range
Storage Temperature -40 to +60°C
Operating pressure
Flow rate
1 to 5 Nl/min mounted in standard sampling block; 0 to 10
Mechanical Specifi cations
Ingress protection IP66 in accordance with standard BS EN 60529:1992; NEMA 4 protection in accordance with standard NEMA 250–2003
ATEX: Standard: Aluminium
IECEx: Exd [ia] IIC T6 Gb
Explosion and fl ameproof area
certifi cates
CCSAUS: CLS I, Div1, GRPS ABCD
INMETRO (Brazil): Zone 21, AEx/Ex tb IIIC T80°C
Easidew PRO XP for Gases Easidew PRO XP LQ for Liquids
Non-standard: mg/m3, lbs/MMSCF natural gas
V;
NOTE: The transmitter accuracy statement is only valid
for the temperature range: -20/+50°C
6-point look-up table for saturation constants up to 1000 ppm
temperature range 0 to +50°C; saturation constants for 8 common liquids
can be programmed into the Easidew PRO XP LQ via the application
software; alternatively the user can program saturation constants manually
-20 to +50°C
Moisture content in liquid: 0–1000 ppm
Non-standard available upon request
45 MPa (450 barg) maximum
m/sec direct insertion
II 2 GD Exd [ia] IIC T6 Gb
EX tb IIIC T80°C Db IP66
Tamb –20°C to +70°C
Ex tb IIIC T80°C Db IP66
Tamb –20°C to +70°C
CLS II & III, Div1, GRPS EFG
CLS I, Zone 1 AEx/Exd [ia] IIC T6
Tamb = –20°C to +70°C IP66
[Approval codes as per IECEx]
0.1 to 0.3L/min through Easidew sample block
0.1 to 1m/s direct insertion
Optional: 316 stainless steel
II 2 GD Exd [ia] IIC T6 Gb
EX tb IIIC T80°C Db IP66
Tamb –20°C to +70°C
Exd [ia] IIC T6 Gb
Ex tb IIIC T80°C Db IP66
Tamb –20°C to +70°C
CLS I, Div1, GRPS ABCD
CLS II & III, Div1, GRPS EFG
Tamb = –20°C to +70°C IP66
TC TR EX-Certifi cate:
1Ex d [ia] IIC T6 Gb X
Ex tb IIIC T80°C Db X
Tamb –20°C to +70°C
(Russia, Belarus, Kazakhstan)
W
over the
W
Russian pattern approval Russia (GOST-R), Kazakhstan (GOST-K)
Canadian pressure vessel cert C.R.N. - all Canadian provinces
Oxygen service Optional: Cleaned for enriched oxygen
Housing material
Optional: 316 stainless steel (supplied with BS EN 10204 3.1 material certifi cate if option F2 requested) (ATEX, IECEx &
Housing moisture protection Optional:
Filter (sensor protection)
Process connection and material 3/4” — 16 UNF with recessed Viton
Standard: Aluminium (copper free), epoxy and polyurethane powder coated, blue RAL 5009
Electronics Conformal Coating
Standard: Stainless steel sintered guard (for protection against fi ne particulate >80μm)
Optional: HDPE guard (for protection against fi ne particulate >10μm)
®
O-ring; 316 stainless steel
Weight Aluminium: 1.6kg; 316 stainless steel: 2.4kg
Electrical connections Dual 3/4” NPT gland
Programmable display meter range Optional: –1999 to +9999
Programmable display decimal point
Optional: 0 to 3 decimal places
Display meter overload limits Optional: 3.6 mA and 20.4 mA
Programmable display meter scales Optional: °C, °F, %, No Scale
Stainless Steel tags Optional: 316 stainless steel tags (70 x 25mm)
Diagnostic conditions
(factory programmed)
Conditions: Sensor fault, Under-range dew point, Over-
range dew point
Output: 23 mA, 4 mA, 20 mA
www.michell.com
CCSAUS)
Page 4
Dew-Point Transmitters
Easidew PRO XP
Product Dimensions
Easidew PRO XP Display
Easidew PRO XP
Related Process Products
Easidew PRO I.S.
I.S. Dew-Point Transmitter
MDM300 I.S. Portable
Dew-Point Hygrometer
Promet EExd
Process Moisture Analyzer
XTP601
Oxygen Analyzer
ES70
Sampling System
Michell Instruments Ltd, Rotronic Instruments Corp. 135 Engineers Road, Suite 150, Hauppauge NY 11788
Tel: 631 427 3898, Email: us.info@michell.com, Web: www.michell.com/us
Michell Instruments adopts a continuous development programme which sometimes necessitates specifi cation changes without notice.
Issue no: Easidew PRO XP_ 97459_V6.1_US_0219
© 2019 Michell Instruments
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