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Programming a Flow Test
(continued)
6. Press the NEXT keypad to highlight Test Params. Use the GoTo
keypad to enter the sub-parameter pop-up menu. Fill Time will be
highlighted. Fill time is the amount of time to give the product to
fill with air before closing the valves. Small products generally
require a very short fill time, and larger or flexible products require
a longer fill time. Use the INCREMENT and DECREMENT keypads to
set the value for fill time.
7. Press the NEXT keypad to highlight Test Time. Use the INCREMENT
and DECREMENT keypads to set the value for test time. Test time is
the period when Sprint LC takes readings to measure air flow. The
last reading made during test time is used to decide whether the
test was a pass or fail.
8. Press the NEXT keypad to highlight Dump. Dump can be set to
Auto, Off or a set time. This opens the valve to atmosphere to vent
the product. In most flow tests, the product itself is vented to
atmosphere often making Dump unnecessary and it can be set to
OFF. However, if pressure remains trapped within the part at the
end of the test then Dump can be set to ON. Dump is also valuable
when wanting to evacuate the product between linked tests.
Setting Test Pressure in a Flow Test
Set the test pressure for a flow test with the flow
restrictor (product) connected to the test port. This
ensures the correct test pressure under real conditions
and is most important when testing high-flow products
that create very little pressure resistance.
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