Nor-Cal CDG 025 OP Lit - Manual (Page 19)

CDG025-OP-LIT (2010-1) 19
4 Operation
Put the gauge into operation. If you are using a Nor-Cal con-
troller, select the measurement range.
A warm-up time of at least 15 minutes should be allowed; for
exact pressure measurements a warm-up time of at least
2 hours is required.
4.1 Displays
RUN ZERO
LED State Meaning
lit Measurement mode
flashing Other mode, error
4.2 Zeroing the Gauge
The gauge is factory calibrated while "standing upright"
(
→ "Calibration Test Report").
We recommend performing a zero adjustment, when the
gauge is operated for the first time.
Due to long time operation or contamination, a zero drift could
occur and zero adjustment may become necessary.
For adjusting the zero, operate the gauge under the same con-
stant ambient conditions and in the same mounting orientation
as normally.