Page 102
Programming a Pressure Decay Test
Follow these steps to program a pressure decay test—
1. Turn the LOCKOUT keyswitch to program mode.
Test Parameters is now highlighted on the setup
menu. Press the ENTER/BACK keypad, then use the
INCREMENT and DECREMENT keypads to select the
program number to edit.
2. Press the NEXT keypad to highlight Test Type. Use the INCREMENT
keypad to select PD for a pressure decay test.
3. Press the NEXT keypad to highlight Test Pressure. Block the test
port with a leak-tight cap, and then press the INCREMENT keypad
once. Now use the pressure regulator to adjust the test pressure
reading. When the reading is set, push the ENTER/BACK keypad. The
highlight bar moves down to Pressure Error.
Read pages 40-41 for more information about setting the test
pressure.
4. Use the INCREMENT and DECREMENT keypads to set the value for
pressure error. Pressure error is how much overshoot or undershoot
is allowed around the test pressure.
Pressure Error
Pressure error is needed to ensure the product is filled with
a minimum pressure before starting a test. Pressure error is
also needed to ensure test pressure does not exceed a
maximum pressure. If the actual applied pressure goes too
high during a test, this suggests the regulator is out of
adjustment or there is some other machine setup problem.
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