Zaxis Isaac PD - Page 53

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Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
T
Target — A preprogrammed number that Zaxis stores in rmware used to calibrate the
Isaac’s pressure and ow sensors. The target value is matched to a pressure or ows
standard to create a lookup table for sensor linearity adjustment.
Test Circuit — The pneumatic tubing, ttings, valves, and sensors that make up
Isaac’s internal air passages. The volume of gas trapped inside the pressure decay test
circuit is about 1.0 cubic centimeter.
Test Cycle — A test cycle is all Isaac-controlled testing activities that occur from the
time the START switch is pressed to the time the operator removes the tested product.
One test cycle can have multiple tests by linking programs in Isaac’s Program screen.
Multiple tests in one test cycle are sometimes called a test series.
Test Phases — The three testing modes (decay, ow, and burst) each have individual
phases or intervals of testing. Pressure decay has four possible time intervals that can
be set: coupling, ll, settle, and test. A ow test has three phases: coupling, ll, and
test. A burst test has just two possible phases: coupling and test.
Test Port — The bulkhead tting (or ttings) on the Isaac’s front panel. The product
to be tested is connected to the test port. From the test port, the Isaac can supply pos-
itive pressure or vacuum for a variety of leak and ow test. Customized Isaacs could
have multiple test ports. See Bulkhead Fitting.
Test Pressure — Test pressure is the level of air pressure used to inate product un-
der test. Test pressure is set by adjusting the regulator on the rear panel of the Isaac.
Test pressure can only be set if the Isaac has supply air connected to the back tting
and the output port is blocked with a leak-tight cap.
Timers — The Isaac uses microprocessor timers to establish time intervals for a variety
of test functions. Time values are set in the Isaac’s Program screen by the user to con-
trol coupling time, ll time, settle time, and test time. Timers are calibrated in seconds
with a maximum setting of 999.9 seconds. See Program Screen.