8-56 Qualitek mR Owner’s Guide
Leak Test: See Pressure Decay Test, Flow Test.
Line Conditioner: An optional device external to Qualitek mR that filters out
noise from the AC power line input. Line conditioners are especially useful
when Qualitek mR is connected to automated machines that produce
electrical noise.
Linked Programs: Two or more programs can be linked (consecutively
connected) to perform multiple actions during a single test cycle. For
example, a flow program can be set to follow a decay program so that when
the operator presses the START switch, Qualitek mR runs through a flow
test then goes to a decay test. If the product goes out of parameter at any
point in either test, the fail light turns on and the test ends.
Measurement Units: See Units of Measure.
NIST: National Institute of Standards and Technology (USA)
Occlusion Test: Occlusion testing is used to test products open passages by
trapping pressure inside a product and then measuring an expected pressure
loss.
Operator: The person who attaches products to Qualitek mR, presses the START
button, and monitors the test. For the purposes of this guide, the operator is
separate from the user. Users typically handle Qualitek mR’s setup and
programming.
Pascal: The Standard International unit for pressure. A Pascal (Pa) is equal to one
Newton per square meter.
PLC: Abbreviation for Programmable Logic Controller. Industrial-strength
computers designed to accept analog inputs and to provide output for
process control. PLC’s are used in a variety of automated control situations.
Qualitek mR can send discrete test results to and accept signals to tell
Qualitek mR when to begin a test from a PLC through the tester’s I/O port.
Qualitek mR can also send quantified test results over its RS-232 output.
Pressure Decay: Also called pressure drop or delta pressure. The pressure change
from the first measurement to the last measurement made during the test
phase of a test. See Reject Level.
Pressure Decay Test: Pressure decay testing is used to test products for leaks by
trapping pressure inside a product and then measuring pressure loss. The
abbreviation P Decay is often used in this guide to refer to pressure decay.
Pressure Error: Pressure setpoints above and below test pressure.
Pressure Standard: A precision measuring instrument that can be connected to
Qualitek mR as part of sensor calibration for pressure or flow. The pressure
standard must have the required accuracy, stability, and repeatability to
measure Qualitek mR’s output. The pressure standard must have current
To Next Page
Loading...
