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Dew-Point Transmitters
Easidew Sampler
Self-Contained Sampling System
A low-cost, self-contained sampling system, with fi ltration and fl ow control, for measurement of
either pressure or atmospheric dew points.
Highlights
• Universal confi guration for atmospheric or line
pressure dew point measurements
• Integral particulate fi lter
• Metering valve for fl ow control
• Single block design for faster measurement
response
• Gas pressure to 1 MPa (10 barg/145 psig)
with a high pressure option to 21 MPa (210
barg/3046) psig available
www.michell.com
Applications
• Compressed air dryers
• Plastic molding
• Ozone generators
• Medical gases
• Pneumatics
• Breathing air
• Welding gases
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Dew-Point Transmitters
Easidew Sampler
Self-Contained Sampling System
Technical Specifi cations
Gas Flow Rate 1 to 5 l/min (2.12 to 10.59 scfh)
Operating Pressure 1 MPa (10 barg/145 psig) with a
Particulate Filter 99.5 % removal of 0.3 m
Gas Connections Quick Connect fi ttings for 6mm O/D
Sample Tube Supplied with 0.5m (19.68 in) pig-tail
Vacuum Rating Standard push fi ttings are not vacuum
Materials of Constructions
Block and Cap:
Flow Control Block:
Couplings:
Sensor Port 5/8” UNF to support all Michell
Environmental IP66 (NEMA 4)
Operating Temperature -40 to +60°C (-40 to +140°F)
Storage Temperature -40 to +70°C (-40 to +158°F), 0-95 %RH
Weight 1.1 kg or 1.3 kg when sensor installed
high pressure option to 21 MPa (210
barg/3045 psig) available
plastic tubing or ¼” Swagelok tube
fi ttings (PTFE or FEP recommended)
vent tube, to prevent back-diffusion
rated
316 stainless steel
Aluminium
Nickel plated brass
Instruments’ impedance sensors/
transmitters
(or as determined by sensor specifi cation)
non-condensing
Order Code
Item Description
EA2-SAM Easidew Sampler
(SS block with fi lter cartridge (0.3 m), inlet/outlet push fi ttings,
m-valve & PTFE vent tube, 6mm (0.24 in) For atmospheric
or pressure dp measurements (10 barg max). Complete with
mounting bracket)
Fast Response and High Integrity
Easidew Sampler is manufactured from a single, machined
stainless steel block. This reduces the number of pipe joints
required to get a sample to the sensor under test and also
reduces internal volume and surface area. As a result, the
sampling system has a faster response and higher integrity than
similar systems built from discreet components. The integrated
particulate fi lter provides further protection against solid
contamination.
System Description
Easidew Sampler comprises the following key components:
• Connection Ports
• Filter
• Flow Control Valve
Connection Ports
The entry and exit pipe connections are of a quick connect,
push fi t type and can accept plastic (P.T.F.E., F.E.P.) 6 mm O/D
pipe. A 0.5 metre length of P.T.F.E. is supplied which should be
used as a pig-tail from the outlet port, whether measuring in
either the atmospheric or pressure mode.
Filter
A 99.5 % 0.3 micron particulate fi lter cartridge is fi tted
downstream of the gas inlet port, accessible via a fi lter cap with
O-ring seal. Other fi lter cartridge ratings can be supplied to
customer order.
Flow Control Valve
A fl ow control valve is supplied factory fi tted to the outlet port.
This valve is designed to set the optimum gas fl ow of between 1
and 5 litres per minute through the sensor sampling block.Easy
Installation and Operation
Background
The Easidew Sampler is a general purpose sampling system that
allows easy measurement of the dew point in many compressed
air and industrial gas applications.
The Easidew Sampler provides all the necessary components
to allow a sample of gas under test to be conditioned for
measurement either at atmospheric or full line pressure; the
two most commonly demanded sampling conditions. Easidew
Sampler provides fl ow and pressure regulation as well as an
in-line particulate fi lter, and housing the sensor, all in a single
monolithic block assembly. The system is provided with a multidirectional mounting bracket for easy mounting on a panel, post,
or pipe brace.
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 Sampler_97165_V2.1_US_0618
Pressure Dew Point Measurements
The Easidew Sampler is factory assembled to make dewpoint measurements at full line pressure. This is achieved
by controlling the gas fl ow at the outlet port. The maximum
operating pressure for the Easidew Sampler is 1 MPa (10 Barg)
with a high pressure option to 21 MPa (210 Barg) available.
If desired, the block can be easily reconfi gured to make
atmospheric dew point measurements by transferring the fl ow
control valve to the inlet port. Simply swap positions of the fl ow
control valve and the gas pipe connection coupling fi tted at the
inlet port. In this confi guration, the fl ow valve regulates the gas
pressure down to atmospheric before it reaches the sensor.
Mounting
The mounting of the Easidew Sampler is non-position critical. A
mounting bracket is factory fi tted. This bracket is easily removed
and repositioned to provide a combination of mounting profi les.
Alternatively the user may wish to directly mount the Easidew
Sampler without the use of the bracket; for this purpose two M6
x 5 mm deep mounting fi xings, pitch at 20 mm, are machined
directly into the block.
www.michell.com
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