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TE-WILBUR OPERATIONS MANUAL REV 002.15 06/11/2015
Tisch Environmental 1-TSP-AND-PM10 sales@tisch-env.com www.tisch-env.com Page 96 of 183
11.0 Leak Checks
This section details the leak check functions of TE-Wilbur.
11.1 Leak Check Introduction
There are two types of leak checks, an internal leak check and an external leak
check. The external leak check checks the entire system from the output of
the solenoid, to the end of the downtube and utilizes a TE-L30 adapter to plug
the flow stream where the TE-PM10-D head would normally be. The internal
leak check uses a TE-W-004 solid, blank disk that is inserted into the filter
holder and checks the leak from the bottom of the filter holder to the output of
the solenoid, bypassing any leaks in the filter holder, downtube or TE-L30
adapter. Per USEPA 40CFR Part50 App. L the sampler must be able to pass a
leak check to demonstrate a leak of no more than 80mL/min is present. Using
thermodynamic formulas the sampler calculates the ending pressure necessary
to pass a leak check that demonstrates no more than an 80mL/min leak in the
system.
Pneumatic flow diagram of TE-Wilbur
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