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Counters, (Reset)
By selecting the “Cycles” or “Failures” numeric fields, the “Reset Counters” dialogue box will
appear, press the clear butto
n then press “OK”.
Coupling Port
The coupling port supplies air pressure to product sealing fixtures or other external pneumatic
components. Generally, the port labeled “2” on front of Isaac is used for coupling air output.
Coupling Pressure
The air pressure supplied to external fixtures. Coupling pressure must be the same as line or
test pressure specified by the customer at order unless additional pneumatic components are added.
Coupling Time
A delay timer used to apply a clamp or seal to product under test before the product is filled with
air. Coupling time gives fixtures enough time to seal product before Isaac applies test pressure.
Crack Test
When in burst mode, a crack test is setup to measure the pressure at which a product changes
characteristics (a drop in pressure, then a continuous increase). It is important that the pressure drop enough to
be detected. If not, an optional downstream sensor might be required to measure a device that opens very slowly.
Crack testing differs from burst testing because the product does not suddenly drop to zero pressure as in a burst
test.
Decay
The amount of pressure a product can lose during a test period before going out of an established
tolerance. Also called
pressure drop
.
Vent
(Also called
Dump
or
Exhaust
) The final step in a test. The vent step is primarily used as a safety to vent
any pressure away from the operator before removal of the test part. Disabling the Vent will not affect the test
result. After Isaac completes a test, the vent valve is activated to open the product into
Isaac’s internal
chamber. If
a vent step is not required (for instance if you want to unplug product to vent pressure), set the Vent timer to 0.0
and uncheck the Auto box.
Event
The pressure change that signals the change in the device under tests condition. This trigger is used to end
the test and compare the pressure reading to the limit settings for pass/fail status.
Fail Light
Isaac’s red indicator with an X
-mark. The fail light turns on whenever a test exceeds established
parameters.
Fast-Fill
Isaac option that allows the unit under test to be filled at a quicker rate than through the test circuit.
Firmware
The set of instructions stored in programmable read-only memory (Flash
) that controls Isaac’s
operation.
Firmware cannot be altered by the customer
.
Firmware Version (How to find)
the version of firmware running Isaac is displayed on the
‘
About
’
screen.
Fixturing
A fixture is a device connected externally to Isaac. Fixtures can be mechanical, electrical, pneumatic, or
combinations of all. Typical fixtures are pneumatic clamps that seal products during a pressure decay or flow test.
Isaac can supply air from the coupling port to operate pneumatic fixtures. Customers must specify at the time of
order whether they want coupling pressure to be line or test pressure. Many fixturing options are possible.
