Programming
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If both the pressure error and flow tolerance are exceeded during
a test, the pressure error will be displayed because pressure error
has priority over flow tolerance.
If the air flow measured by Sprint iQ’s mass flow sensor is below
the minimum setpoint at the end of test phase, Sprint iQ turns on
the reject light and shows LOW in the status box on the run
display.
If vent is active, the dump valve opens and pressure is vented to
atmosphere.
Fill time in a Flow Test
Use the fill time in a flow test to get the product pressurized and
flowing properly before taking flow readings. This protects the
flow sensor from overpressure and provides more consistent flow
readings.
If vent is active, the vent valve opens and pressure is vented to
atmosphere.
4.1.4.2 Leak Test Using Flow
You can use Sprint iQ to check for leaks using flow. When setting
up this kind of test, you set the minimum flow rate to zero. The
maximum flow setting is then set to the maximum flow rate you
wish to accept. The exact flow rate depends on your product
characteristics and specifications.
When to use a flow leak test
A leak test using flow is often an excellent option when certain
conditions apply. If your product is small and the acceptable leak
rate is relatively high, a leak test using flow can be much faster
than a pressure decay test. This is because a flow test conducted
on a small product requires no fill or stabilization time. Typical
leak tolerances used in flow leak testing are roughly 1.0 sccm for
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