INFICON Cube CDGsci - Manual (Page 32)

32 tina88e1-b (2014-09)
4.4 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.
4.4.1
<ZERO> Adjustment
The zero can be adjusted via
• the button on the gauge,
• the diagnostic port (→  [3]),
• briefly apply the supply voltage to the digital input
"Remote Zero" (pin 10),
• the RS232 interface (→  [2], [3]),
• the Ethernet interface (→  [1], [4]),
• the wireless network (→  [1], [4]).
While the gauge is being heated and/or under atmos-
pheric pressure, the zeroing function is locked in order
for operating errors to be prevented.