Michell Instruments Condumax II Installation Operation & Maintenance page 11

Condumax II Sampling System -
NEC Compatible IOM Manual
The bypass flow gas handling components are as follows:
• Bypass Flow Letdown Pressure Regulator (PR2):
Provides pressure letdown from sample line pressure to a lower vent pressure.
• Non Return Valve (NRV2):
Provides system protection from back pressure of vent gas when sample gas
is not flowing.
• Bypass Flowmeter & Valve (FM2):
Allows the user to manually set and provide indication of the bypass gas flow
rate across the membrane filter.
• Letdown Gas Vent Isolation Valve (BV3):
Allows the user to manually letdown the sample gas pressure trapped in the
system for maintenance or servicing.
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