Nor-Cal CDG 100 OP Lit - Manual (Page 25)

CDG100-OP-LIT (2010-1) 25

Briefly press the <ZERO> button with a pin (max.
ø1.1 mm). The zero adjustment runs automatically. The
<STATUS> LED blinks until the adjustment (duration
≤8 s)
is completed.
Press the button briefly
max. ø1.1 mm
After zero adjustment, the gauge automatically returns
to the measurement mode.
The <STATUS> LED blinks green 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.
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.