Michell Instruments EA2/EA34-SAM LP Manual

Technical Specications

Gas Flow Rate 1 to 5 Nl/min (2.2 to 10.6 scfh)

Operating Pressure

Particulate Filter 99.5% removal of 0.3μm

Sample Tube Supplied with 0.5m vent tube, to prevent back-diffusion

Vacuum Rating Standard push ttings are not vacuum-rated

Materials of Construction

Sensor Port

Environmental IP66 (NEMA 4)

Operating Temperature

Storage Temperature

Weight

Customer Service Contact Details

10 barg (145 psig)
(with a high pressure option to 200 barg (2900 psig) available)

Block & cap:
Flow control block:
Couplings:

5/8” UNF to support all Michell Instruments’ impedance
sensors / transmitters

-40 to +60°C (-40 to +140°F)

(or as determined by sensor specication)

-40 to +70°C (-40 to +158°F)
0-95% RH non-condensing

1.1kg (2.42lb)

(1.3kg (2.9lb) when Easidew sensor tted)

316 stainless steel
aluminum
nickel-plated brass

Easidew Sampler (LP)

Self-Contained Sampling System

User’s Manual

If, after reading this manual, there are any questions about the product or how to install and
operate it, please contact a Michell representative.

Refer to www.michell.com for details of Michell Instruments’ worldwide ofces contact information.

97076 Issue 08

May 2013

The Easidew Sampler is a modular low-cost, self-contained, ltration block and ow control

arrangement which is suitable for any Michell impedance dew-point transmitter with 5/8” - 18 UNF
process connection size, and is able to perform dew-point measurements at atmospheric (1 barg
(14.5 psig)) or system pressures (10 barg (145 psig)).

Connection Ports

The INLET and OUTLET port connections are push-t types to accept PTFE (or similar) 6mm O/D

tube.

A 0.5 metre length of PTFE is supplied which should be used as a venting mechanism from the
OUTLET port, whether measuring in either the pressure or atmospheric mode.

Gas out

Filter

A 99.5% 0.3 μm particulate lter cartridge is tted as standard and is accessed via the lter
cap. The condition of the lter should be checked at regular intervals to ensure optimum
performance. To inspect or change the contaminated lter, remove the lter cap using the

hexagonal nut (A/F=19mm). Replacement cartridges can be ordered from Michell Instruments

(Part No. SSF-PF-10PK). The lter cap is sealed with an O-ring seated in the main body of the

block. NOTE: When inspecting or changing the lter, ensure the O-ring is correctly
seated when re-tightening the lter cap.

Flow Control Valve

A ow control valve is supplied factory-tted to the OUTLET port. This valve is designed to set the
optimum gas ow of between 1 to 5 Nl/min (2.2 to 10.6 scfh) through the block.

NOTE: The ow control valve should not be used as a ow shut-off valve.

System Pressure Dew-Point Measurements

The Easidew Sampler system is factory-assembled to make pressure dew-point measurements.

This is achieved by controlling the gas ow at the OUTLET port. The maximum operating pressure

for the Easidew Sampler system is 10 barg (145 psig).

Atmospheric Pressure Dew-Point Measurements

If required, the block can be easily recongured to make atmospheric dew-point measurements
by installing the ow control valve in the INLET port. Simply swap positions of the ow control
valve and the gas pipe connection coupling tted at the inlet port. When reconguring the Easidew

Sampler ensure that the system is leak tight before commencing measurements.

Gas in

Ambient pressure: 1 barg (14.5 psig)

Dew-Point Measurements

(Transmitter shown for

illustration purpose only)

Maximum operating pressure 10 barg (145 psig)

It is important that the gas ttings are

correctly tightened before use.

Failure to do so will affect the pressure rating.

For use at higher pressures please contact

Michell Instruments for details.

Gas out

Gas in

System pressure: 10 barg (145 psig)

Dew-Point Measurements

(Transmitter shown for

illustration purpose only)

Mounting

The mounting of the Easidew Sampler system is not position critical. A mounting bracket is factory-

tted. This bracket is easily removed and repositioned to provide a number of mounting options.

Alternatively it is possible to mount the Easidew Sampler system without the bracket by using the

2, M6 x 5mm deep mounting xings, pitch at 20mm, which are machined directly into the block.

Liquid Contamination

The Easidew Sampler does not provide protection from liquid

contamination. If there is a possibility of liquid in the gas sample,

additional ltration should be tted before the Easidew Sampler.