Source:
http://www.emersonprocess.com/brooks/
THE CHALLENGE
Increased concern for the environment has forced plant
operators to pay more attention to the small drips and
leaks common to control and shutoff valves. Environmental
laws have mandated that plant operators be accountable
for all fugitive emissions originating at the facility.
To effectively report and limit emissions, facility
operators must have a reliable way of testing valves
and other components for leakage.
THE BROOKS SOLUTION
Brooks low flow thermal mass flow meters provide a simple
and accurate method of testing flow components for outboard
leakage. Regulated air or helium is used to pressurize
the valve under test.
The Brooks 5860E will precisely measure any leakage
at the valve stem. With no moving parts, the mass flow
meter is well suited for this type of test since it
can safely be over range during the pressurization phase
and still measure very low flows.
The 0151 power supply is ideal for this application
since it can be calibrated to read directly into engineering
units. This simplifies the recording of leak rates.
A model 5848 filter is suggested as inexpensive insurance
against accuracy degradation due to contamination.
The Brooks Model 8601 pressure regulator is used to
provide a precise final stage of pressure regulation.
The simplicity and small size of these components makes
them perfect for panel mounting in an instrument shop
or maintenance shed. The set-up can also be mounted
on a cart or box for use in the field.
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