INFICON HPG400 ATM to High-Vacuum Gauge - Manual (Page 35)

tina31e1 (2004-05) HPG400 v1.om
35
The procedure for setting thresholds is identical for both switching functions.
Put the gauge into operation.
Connect the + lead of a voltmeter to the threshold measurement point of the
selected switching function ("Setpoint A" Pin 3, "Setpoint B" Pin 6) and
its – lead to Pin 5.
max. ø2.5
Setpoint A Pin 3
Setpoint B Pin 6
Pin 5
Using a screwdriver (max. ø2.5 mm), set the voltage of the selected
switching function (Setpoint A, B) to the desired value U
Threshold
.
Setting of the switching functions is now concluded.
There is no local visual indication of the statuses of the switching func-
tions. However, a functional check of the switching functions (On/Off)
can be made with one of the following methods:
• Reading the status via fieldbus interface (→ [1] for HPG400-SD,
→ [2] for HPG400-SP).
• Measurement of the relay contacts at the sensor cable connector
with a ohmmeter/continuity checker (
→ 18).
Procedure