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FCO770 Users Guide Issue 1
tubing used must be metal or thick walled nylon. For small components up to 50cc it is
helpful to use smaller diameter tubing, e.g. 4mm or 3/16" o.d.. Do not use push-in type
fittings on the test lines as they are unreliable and may leak.
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The condition of the test item and its sealing arrangement will directly affect the reliability
and repeatability of all leak test results.
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The test item must be clean and free of any water or loose dirt.
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Test items must be at a stable temperature. This may necessitate storage at the test
area prior to testing to allow it to settle to ambient conditions.
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All seals onto the test item must be rigid as any flexing during the test will change the
test volume and give false leak readings.
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The test item must be clamped in a way that prevents distortion of the test piece.
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Connect a suitably fused 24V DC supply to the instrument. The instrument must be
connected in compliance with all local electrical regulations.
The instrument will immediately start its power up sequence which usually takes about 20
seconds. The instrument is ready to use when a screen similar to below is shown.
Electrical Control
To ease commissioning the instrument can be run from the Touch Screen soft buttons. The
Remote Control option in the Functions menu must be set for the appropriate control inputs
(see Remote Control in Menu Details).
Once the leak detector is operating satisfactorily it may then be connected to a different
controller if required.
Electrical Outputs
The outputs are active high transistors (i.e. switching the positive supply). The current per
output must not exceed 120mA.
If it is necessary to have mains operated lamps or any other high voltage or heavy current
device, the outputs should be used to drive external relays.
Содержание FCO770
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