Nor-Cal CDG 025 OP Lit - Manual (Page 21)

CDG025-OP-LIT (2010-1) 21

Briefly press the <ZERO> button with a pin (max.
ø1.1 mm). The zero adjustment runs automatically. The
<RUN> LED flashes until the adjustment (duration
≤8 s) is
completed.
Press the button briefly
max. ø1.1 mm
After zero adjustment the gauge automatically returns to
measurement mode. The <RUN> LED lits.
The zero can also be adjusted via the RS232C interface
(
→  [1]).
The <RUN> LED flashes if
• the signal output is negative (< -20 mV) when the final pres-
sure has been attained
• the zero adjustment has failed.
4.2.2
<ZERO> Adjustment with Ramp Function
The ramp function allows to adjust the zero at a known reference
pressure within the measurement range of the gauge.