FCO770 Users Guide Issue 1
Page 49
CHECK FILL PRESSURE
•
Disable or enable pressure tolerance checking at the end of the fill time. This is
normally enabled to ensure a valid test but may be disabled if the flow rate is too high
to maintain the pressure.
•
Options: No, Yes
END ON FAIL
•
Blockage tests normally test against the fail levels at the end of the test time. This
feature enables testing against the fail levels during the test time: the test will end
immediately if the test fails.
•
Options: No, Yes
PREFILL PRESSURE
•
Only used with auto prefill and only displayed if auto prefill is used.
•
This is used to detect when to stop filling. Tolerance checking at standby must be
disabled for auto prefill.
PREFILL TOLERANCE
•
Only used with auto prefill and only displayed if auto prefill is used.
•
The initial pressure may be higher or lower than the desired pressure depending if it is
a vacuum or pressure test or possibly upon the result of a previous test if used in a
sequence. To ensure that the item fills towards the required pressure rather than
farther away from it, the prefill stage will end if the pressure moves from the initial
pressure in the wrong direction by more than the prefill tolerance.
TEST PRESSURE
•
Set the nominal test pressure. This is used in conjunction with the tolerance setting to
ensure that the applied test pressure is within the test specification.
PRESSURE TOLERANCE
•
Sets the pressure tolerance for fault indication. Set 100.0% to disable.
FAIL HIGH
FAIL LOW
•
This test may be used with positive pressure or vacuum and assumes that the pressure
will fall in magnitude towards zero for both. The FAIL HIGH level checks for a
blockage and the FAIL LOW level checks for a gross leak. Set FAIL LOW to zero to
disable the gross leak check.
FAIL HIGH
FAIL HIGH
FAIL LOW
FAIL LOW
0
0
VACUUM
TEST PRESSURE
POSITIVE
TEST PRESSURE
PASS
PASS
PASS
PASS
FAIL
FAIL
FAIL
FAIL
Summary of Contents for FCO770
Page 2: ......
