Dew-Point Transmitters
Easidew Transmitters
Industrial Dew-Point Transmitters
Simple to install and maintain, the Easidew transmitter series measures dew point and moisture
content and is available with a range of process connections and electrical connectors. The Easidew
I.S. transmitter has global intrinsically safe certifi cations and all Easidew models are available with
service exchange program which reduces the cost of maintenance.
Highlights
• Measurement ranges -110 up to +20°Cdp
• Dew point or ppm
• 2-wire loop power connection
• Accuracy ±2°Cdp
• Traceable calibration certifi cate
• Power supply 12 to 28 V DC
• Easidew I.S.
• 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
• MiniDIN 43650, M12 electrical connectors
• Oxygen Service cleaned
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moisture content output
V
IECEx, cCSAus, FM and ATEX approvals
Applications
• Compressed air Class 1 to Class 6 dryers
• Breathing air
• Hydrogen coolant
• Inert and bulk gases
• Glove boxes
• Welding gases
• Hazardous areas
• Oxygen purity
Dew-Point Transmitters
Easidew Transmitters
The Universal Moisture Transmitter
The Easidew transmitter has a wide measurement range
from -110 to +20°Cdp and one stocked product can be used
across all class 1 to class 6 industrial dryer applications.
The Easidew family of industrial transmitters incorporates
the latest Michell advanced ceramic technology providing
stable, reliable and repeatable
all dew point applications.
moisture measurements for
Ease of Installation
Flexible product design ensures the unit can be quickly and
economically installed.
• Mini DIN 43650 form C or M12 5 pin electrical
connectors
• 5/8” UNF, 3/4” UNF, G1/2” BSP process connections
• 316 stainless steel transmitter sample blocks
• On site confi guration and diagnostic
communication tool
Service Exchange/Recalibration
Program
Michell offers 2 services for customers who want minimum
downtime and sensor traceability, while maintaining the
reliability of their system:
• Sensor Exchange - Customers place an order for a
guaranteed, reconditioned sensor. When this arrives,
they exchange it for the installed sensor which is
returned to Michell, resulting in zero process downtime.
• Recalibration - Customers return their installed sensor
to Michell, where they are inspected, checked and recalibrated before being returned. This provides on-going
sensor traceability for the process.
Global Certifi cations
The Easidew series has a broad range of certifi cations to
ensure a single stocked unit can be used in any global
application.
• Easidew I.S. - ATEX & IECEx
• Easidew I.S. - cCSAus (US and Canada) & FM
• Easidew I.S. - EX-TC TR
• Easidew - UL approval
• All Easidews - Canadian pressure vessel approved (CRN)
Michell has a large team of experienced fi eld and factory
based application engineers who are available to assist with
any dew point sensor application.
Safety and Integrity
The mechanical design considers the health and safety quality
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
• Optional gas wetted parts BS EN 10204 3.1 material
certifi ed
• Optional cleaning for enriched oxygen service
• 13 point calibration certifi cate
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 transmitters product life.
• Accuracy ±2°Cdp
• Fast response to moisture changes
Flexibility of Ownership
The Easidew transmitter has a RS485 communication
system, which gives customers the opportunity to re-range
and re-scale with a communication kit for a wide variety of
moisture measurements.
• Re-ranging 4–20 mA within the –110 to +20°Cdp range
• Moisture scaling — dew point, ppm
V
Speed of Supply
The transmitter is manufactured within Michell’s worldleading high-volume moisture transmitter manufacturing
centre in the United Kingdom, which ensures reliability and
repeatability of delivery and fi eld supported by a network of
Michell’s global service centres.
• Calibration manufacturing system is traceable to
globally recognised NPL and NIST ISO 17025 standards
Installation Accessories
Transmitters are available with a range of practical accessories.
• 5/8” UNF, 3/4” UNF, G1/2” BSP Sample blocks
• Compact simple sample systems
• Process connection adaptors
Customisation
If your application requires a customized sensor, we have
specialized design and manufacturing capability to cover your
requirements.
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Dew-Point Transmitters
Technical Specifi cations
Product Easidew, Easidew M12 and Easidew 34
Transmitter
Performance Specifi cations
Measurement range –110 to +20°C dew point; –100 to +20°C dew point; non standard ranges available on request
Accuracy ±2°C dew point*
Response time 5 mins to T95 (dry to wet)
Repeatability 0.5°C dew point
Calibration Traceable 13 point calibration certifi cate
Electrical Specifi cations
Output signal
Output Dew point or moisture content
Analog output scaled range Dew point: –110 up to +20°C; Moisture content in gas: 0– up to 3000 ppm
Supply voltage 12 to 28 V DC
Load resistance Max 250 Ω @ 14 V (500 Ω @ 24 V)
Current consumption 23 mA max, depending on output signal
CE conformity Approved
UL61010-1 & CAN/CSA C22.2 No. 61010-1
4–20 mA (2-wire connection, current source); User confi gurable over range
Easidew M12: Modbus RTU over RS485
Operating Specifi cations
Operating temperature –40 to +60°C
Compensated temperature range -20 to +50°C
Storage Temperature -40 to +60°C
Operating pressure 45 MPa (450 barg) maximum
Flow rate 1 to 5 Nl/min mounted in standard sampling block; 0 to 10 m/sec direct insertion
Mechanical Specifi cations
Ingress protection
Intrinsically safe area certifi cates
Oxygen service
Housing material 316 stainless steel
Dimensions
Filter (sensor protection)
Easidew: 5/8” - 18 UNF
Process connection
Weight 150g
Electrical connections
Mating Electrical Connectors
Diagnostic conditions
(factory programmed)
Approved galvanic isolators
NOTES * Over Compensated Temperature Range
Easidew 34: 3/4” - 16 UNF
Easidew M12: 5/8” -18 UNF, 3/4” - 16 UNF, G1/2”
BSP
Easidew: MiniDIN 43650 form C
Easidew M12: M12 5 Pin (A coded)
IP66 in accordance with standard BS EN 60529:1992; NEMA 4 protection in accordance
MiniDIN 43650 form C L=132mm x ø45mm (with connector cable)
Easidew M12: M12 5 pin L = 155mm x ø45mm (with connector cable)
Optional: 316 stainless steel sintered guard <80μm
Easidew M12: optional 0.8, 2, 5 metre M12 A coded connector/cable available
with standard NEMA 250–2003
Easidew M12: IP65
ATEX: II 1 G Ex ia IIC T4 Ga (-20 to +70 °C)
IECEx: EX ia IIC T4 Ga (-20 to +70 °C)
TC TR@ 0Ex ia IICT4 Ga (-20 to +70 °C)
FM: Class I, Division 1, Groups A B C D, T4
CSAUS: Class I, Division 1, Groups A B C D, T4
C
Optional: Cleaned for enriched oxygen service
Standard: HDPE <10μm
5/8” -18 UNF, 3/4” - 16 UNF, G1/2” BSP
MiniDin 43650 form C
Mating connector supplied as standard
Conditions
Sensor fault
Under-range dew point
Over-range dew point
Output
23 mA
4 mA
20 mA
KFD2-CR-EX1.20200
KFD2-CR-EX1.30200
KFD0-CS-EX1.50P
KFD0-CS-EX2.50P
KFD2-STC4-EX1.H
MTL5041
MTL5040
Easidew I.S. Transmitter
V;
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Dew-Point Transmitters
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A
A
Easidew Transmitters
Product Dimensions
Easidew & Easidew I.S. Easidew M12
5/8” Bonded Seal
ø25.4 x 2mm
(ø1 x 0.07”)
27mm
(1.06”)
A/F
45mm
(1.77”)
10mm
(0.39”)
132mm
ø27mm
(1.06”)
(5.19”)
10mm
(0.39”)
46mm
(1.81”)
5/8” UNF
5/8" UNF THREAD
BONDED SEAL
13.0 0.512
46.0 1.811
DIMENSIONS IN mm [INCHES]
60.3 2.374
8.0 0.315
12.7 0.500
27.0 1.063
M12 5-WAY
A CODED
27.0 1.063
46.0 1.811 60.3 2.374 12.7 0.500
G1/2 THREAD
BONDED SEAL
13.0 0.512
DIMENSIONS IN mm [INCHES]
44.0 1.732 62.3 2.453 12.7 0.500
3/4" UNF THREAD
O-RING SEAL
13.0 0.512
DIMENSIONS IN mm [INCHES]
ø30mm
5/8”-18 UNF
3/4” UNF
G1/2” BSP
8.0 0.315
10.0 0.394
M12 5-WAY
A CODED
27.0 1.063
27.0 1.063
M12 5-WAY
A CODED
27.0 1.063
27.0 1.063
46mm
(1.81”)
G1/2” BSP
46mm
(1.81”)
3/4” UNF
G1/2” BSP Bonded Seal
ø28.65 x 2.61mm
(ø1.12 x 0.10”)
3/4” O-Ring
ø18.72 x 2.62mm
(ø0.75 x 0.09”)
27mm
(1.06”)
A/F
27mm
(1.06”)
A/F
45mm
(1.77”)
45mm
(1.77”)
1/8” NPT
27 A/F
1/8” NPT
(see accessories and spare parts)
55.2mm
Optional Sample Block
5/8”-18 UNF
3/4” UNF
G1/2” BSP
30mm
10mm
(0.39”)
10mm
(0.39”)
132mm
ø27mm
(1.06”)
132mm
ø27mm
(1.06”)
(5.19”)
(5.19”)
10mm
(0.39”)
10mm
(0.39”)
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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 Transmitters_ 97554_V2_US_0518
Easidew PRO I.S.
Intrincically Safe Moisture
Transmitter
S8000 RS
High Precision Chilled
Mirror Hygrometer
© 2018 Michell Instruments
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