Pressure Measurement
MC4 User Guide 45
Zeroing a Pressure Module
If the selected pressure module does not display zero gauge
pressure when the applied pressure is zero, the module has to be
zeroed.
Open the appropriate window setup menu (F1/
Setup
or
F2/
Setup
) and select F1/
Zero Pressure
. If a secondary pressure
module is active in the selected window (see Tools Menu on page
67), a pop-up menu will appear for choosing either to zero the
primary or the secondary pressure module.
NOTE!
Zeroing a pressure module is especially important when the
operating position of MC4 is changed or the location of MC4 is
changed in the vertical direction. Both of the above mentioned
factors affect notably on the pressure measurement modules.
Measuring pressure below 100 mbar (approx. 40 iwc) should be
done with a firmly mounted MC4 (e.g. placed on a table top).
Next
Tools Menu on page 67
Alarms on page 69
Calibration, see Part D.
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