INFICON BPG400 ATM to Ultra-High Vacuum Gauge - Manual (Page 49)

tina03e1-b (2004-02) BPG400 v1.om
49
• Pin approx. ш1.3 Ч 50 mm (e.g. a bent open paper clip)
The push button used for the adjustment at atmospheric pressure is also used for
the zero point adjustment (
→ 47).
Operate gauge for approx. 10 minutes at a pressure of ≤1×10 -4 mbar.
Insert the pin through the opening and push the button inside for at least
2 s.
The adjustment is done automatically and ends after 2 minutes.
The zero point of the gauge is now adjusted.
In the event of a fault or a complete failure of the output signal, the gauge can eas-
ily be checked.
• Voltmeter / ohmmeter
• Allen key, size 2.5 mm
• Spare sensor (if the sensor is faulty)
The output signal is available at the sensor cable connector (Pin 2 and Pin 12).
In case of an error, it may be helpful to just turn off the mains supply and
turn it on again after 5 s.
Problem Possible cause Correction
Output signal
permanently
≈0V
Sensor cable defective or
not correctly connected Check the sensor cable
No supply voltage Turn on the power supply
Gauge in an undefined
status Turn the gauge off and on
again (reset)
Output signal ≈0.3 V
(Display: error = 8)
Hot cathode error
(sensor faulty) Replace the sensor
(
→ 51)
Output signal ≈0.5 V
(Display: error = 9)
Pirani error
(sensor defective) Replace the sensor
(
→ 51)
Output signal ≈0.5 V Electronics unit not
mounted correctly on
sensor Check the connection
Display: Internal data connection
not working
Turn the gauge off and on
again after 5 s
Replace the electronics
unit
Gauge does not switch
over to BA at low pres-
sures Pirani zero point out of
tolerance Carry out a zero point
adjustment (
→ 48)
Required tools
Procedure
6.3 What to Do in Case of
Problems
Required tools / material
Troubleshooting (BPG400)