8-52 Qualitek mR Owner’s Guide
8.16 Terminology Reference
Abort a test, how to: Press the red STOP button during the test. An aborted test
will register on the Tested and Rejects counters.
ASCII: The binary code used for representing characters.
Atmosphere (1): In this guide, atmosphere means room air pressure. Atmospheric
pressure is nearly synonymous with barometric pressure-an external force
pushing on all sides of every object on earth’s surface. During a flow test,
product being tested must flow into atmosphere, which causes a resistance
to flow called back pressure. Room atmosphere can change due to
fluctuations in air conditioning or changing weather conditions.
Atmosphere (2): The word atmosphere can refer to a unit of measure equal to
pressure at average sea level. By convention, one atmosphere equals 14.7
psi. To say a test was taken at one atmosphere means the test was made at
(or converted to) average sea level.
Bar: A unit of pressure approximately equal to sea level air pressure. In some parts
of the world, atmospheric pressure is often expressed in millibars (mbar).
Barometric Pressure: Also called atmospheric pressure. The force of air pressing
down on the earth. Barometric pressure changes with elevation and
weather conditions. Qualitek mR’s regulator compensates for changes in
barometric pressure to provide a constant relative output.
Bulkhead Fitting: A connection passing through a panel or enclosure. The
standard bulkhead on the front has a #10 by 32 pitch machine thread.
Cal Value: Cal Value = Pressure change during the leak test step with a calibrated
leak master – the Comp Value.
Comp and Cal: Leak rate calibration
Compensation %:
= (comp / (comp + cal)) * 100
Comp Value: Pressure change during the leak test step with a non-leaking master
Concurrent: Testing multiple ports or multiple parts at the same time is known as
concurrent testing. If the tester has multiple test ports and tests them all at
the same time, it is called a concurrent tester. See Sequential.
Contrast: The contrast of the LCD can be adjusted for the best viewing using the
Display Contrast setting in the Setup Menu.
Counters: Qualitek mR uses counters to maintain totals of the number of tests
performed and their results. Counters may be cleared from the Program
Mode Data Management tab or in Run Mode Statistics.
Coupling Port: The coupling port supplies air pressure to product sealing fixtures
or other external pneumatic components.
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