INFICON SKY CDG025D-X3 0.1 ... 1000 Torr / mbar process gauge - Manual (Page 22)

22 tina57e1 (2010-01)
It also permits to adjust an offset of the characteristic curve in
order to
• compensate for the offset of the measuring system or
• obtain a slightly positive zero for a 0 … 10 V AD converter.
The offset should not exceed 2% of the F.S. (+200 mV). At a
higher positive offset, the upper limit of the measurement range
is exceeded.
Recommended procedure for adjusting the offset of a
measuring system: → Notice 19.
Operate the gauge for at least 15 minutes (until the signal
is stable).
Push the <ZERO> button with a pin (max. ø1.1 mm) and
keep it depressed. The <RUN> LED starts flashing. After
5 s, the zero adjustment value, starting at the current out-
put value, keeps continually changing (ramp) until the but-
ton is released or until the setting limit (max. 25% F.S.) is
reached. The corresponding output signal is delayed by
about 1 s.
max. ø1.1 mm
Keep the button depressed