Uson sprint iq, Руководство пользователя

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Programming
65
Typically, a pressure decay test is conducted first, then the
product is opened to atmosphere and an occlusion test is made.
Sealing the Product
Occlusion tests can be conducted by using a clamping device to
seal the product during the fill time and releasing the seal to allow
the product to flow to atmosphere. Alternatively, the product can
be opened to the atmosphere throughout the entire test.
An occlusion test can be run with or without a clamping device to
seal off the product. Examples of both are given below.
Occlusion Test with External Seal
The occlusion test can be set up to work like this:
1. The operator connects a product to the test port and the
open end of the product is placed in the sealing (clamping)
fixture. The operator then pushes the START switch. Or
the start could be activated by automated equipment.
2. The couple timer provides delay time needed to activate
the fixture before starting the test. A coupling valve can be
used to supply air to the fixture and hold the seal until the
test ends.
3. At the end of couple time, the pressure decay valve opens
and fills the product with air. Sprint goes into the stabilize
phase only if test pressure is within the pressure error
tolerance at the end of the fill phase.
4. At the end of fill time, valves close trapping air inside the
product including the Sprint iQ’s internal test circuit.
Stabilization time lets the pressurized product settle
before Sprint iQ starts taking pressure drop readings. For
large flow rates stabilization time is not needed and can be
set to zero.
5. At the end of stabilization time, Sprint iQ starts looking
for a drop in pressure from the stabilized pressure.