PROMET EExd Process Moisture Analyzer Sampling Systems
Installation, Operation & Maintenance Manual
and User
Guide
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7
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www.michell.com
Trace Moisture systems
(FM1 for 1 channel):
(FM2 for 2 channel):
Allows the user to manually set and indicate
the sample gas flowrate across the moisture
analyzer dew point sensor.
Gas Outlet Isolation Valve(s)
(BV2 for 1 channel):
(BV5 for 2 channel):
Allows the user to manually isolate the system
from the gas vent line for maintenance or
servicing.
Gas Letdown Vent Isolation Valve(s)
(BV3 for 1 channel):
(BV6 for 2 channel):
Allows the user to manually letdown any
sample gas pressure within the system
(depressurise to atmosphere) for maintenance
or servicing.
Bypass flow gas handling components (Natural Gas systems only) comprise of the
following:
Bypass Flow Letdown
Pressure Regulator(s)
(PR3/PR4 for 1 channel):
(PR7/PR8 for 2 channel):
Provides pressure letdown from line pressure to
a lower vent pressure. Standard version has 1
stage of pressure letdown. High pressure
version has 2 stages of pressure letdown.
Non Return Valve(s)
(NRV2 for 1 channel):
(NRV4 for 2 channel):
Provides protection for the system from
backpressure of vent gas when sample gas is
not flowing.
Bypass Flowmeter & Valve(s)
(FM2 for 1 channel):
(FM4 for 2 channel):
Allows the user to manually set and indicate
the bypass gas flowrate across the membrane
filter.
