INFICON HPG400 ATM to High-Vacuum Gauge - Manual (Page 39)

tina31e1 (2004-05) HPG400 v1.om
39
Put the gauge into operation.
Operate the gauge for
≈10 minutes at atmospheric pressure. If
the gauge was operated within the hot cathode range, a cooling-
down time of
≈30 minutes is to be expected (gauge tempera-
ture = environmental temperature).
Insert the pin through the opening marked <FULL SCALE> and push the
button inside for at least 5 seconds.
max. ø1.3
The gauge is automatically adjusted (
≈10 s).
The gauge is now adjusted at atmospheric pressure.
The sensor is factory calibrated. The calibration setting of the hot cathode range
0 … F is printed on the label. Correct this value with the <Cal adj> switch to adjust
the electronics to the sensor. Before operating the gauge for the first time or after
replacing the sensor, check the calibration value setting and adjust it if necessary.
Pirani adjustment at
atmospheric pressure
6.3 Adjusting the
Calibration Setting of
the Hot Cathode