Zaxis Isaac PD - Page 18

18
Zaxis Inc. LLC
801.264.1000
2442 South 2570 West
West Valley City, UT 84119
Setting Testing Parameters
The following parameters control test air presented to the test part:
1. Press the Pre-Fill data eld with your nger or stylus and enter your values with
the numeric keypad screen.
b. Used with larger part volumes (greater than 300cc).
2. Press the Pre-Fill Settle which is a settling time during ll before pressure toler-
ance limits are measured (typically half of the total ll time).
3. Press the Fill data eld and enter the amount of time the pneumatic outputs will
be active to ll the test part with regulated pressure.
4. Press the Settle data eld and enter the amount of time the pneumatic outputs
have to isolate the test part from any incoming pressure.
a. This allows for the thermodynamics and/or compliance of the part to
reach equilibrium.
2. Press the Test data eld and enter the amount of time the test will measure the
change in pressure.
c. This test observes for a decay in pressure.
d. The decay is evaluated against the test limits to determine a Pass/Fail
state.
6. Under the Vent data eld, select either the Timed or Auto radio boxes.
1. Timed: vents the pressure for the amount of time inputted.
2. Auto: releases pressure to a safe limit (typically 0.5 psi).
3. Once the pressure is released, the test is concluded.
7. In the Test Limits section, values (in psig) can be entered in the Increase and
Decay data elds.
h. Enter an increase limit to verify that no external or thermal dynamic
forces cause the pressure to increase over the test time.
i. If the increase limit is used, the Evaluate at End of Test checkbox must
also be checked.
j. With a decay limit set and the limit is reached before the timer ends, the
test will short cycle and result in a fail condition.
k. To see the decay in the full timer length, check the Evaluate at End of
Test checkbox.