INFICON HPG400 ATM to High-Vacuum Gauge - Manual (Page 38)

38
tina31e1 (2004-05) HPG400 v1.om
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).
Adjust the gauge:
HPG400 without display
353-520, 353-522
HPG400 with display
353-521, 353-523
Insert a pin (
≈ш1.3Ч50mm) through the opening <FULL SCALE> and
push the button inside for at least 5 seconds.
_
Automatic adjustment in progress (
≈10 s ) .
_
Adjustment completed.
The following procedures are described:
• HV adjustment Pirani
• ATM adjustment Pirani
• Pin, approx. ш1.3 Ч 50 mm (e.g. abent open paper clip)
The Pirani part is automatically adjusted by the hot cathode part when the gauge is
activated and a pressure value of 1 … 3×10
-3
mbar is reached for the first time.
Pirani adjustment at
atmospheric pressure
6.2.2 Pirani Adjustment
(HPG400-SD,
HPG400-SP)
Required tools
HV adjustment Pirani