FCO770 Users Guide Issue 1 Page 75
pressure will affect this, as well as aging. As the valves age the latency time
increases – this can be used to warn that servicing is required. It is expressed
in seconds.
o Leak Zero: The leak transducer is sensitive and it’s zero point may shift if it
is overloaded. The instrument is able to tolerate this to a large degree, but
eventually may stop with a fault. MEWS may be used to give a warning
before the instrument fails.
o Calibration Due: it is recommended that the calibration of this instrument is
checked annually, or as often as your quality system demands. This value is a
display of the number of days left before calibration is due. If the value is
negative then calibration is over-due.
• WARNING CODES
When a warning occurs it is shown on the FCO770’s lower status window. A flashing
message will appear with one of the following codes:
o M01: Cycle Count
o M02: Latency
o M03: Leak Zero
o M04: Logged Data
o M05: Calibration Due
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