Inficon BPG402-S, Руководство по эксплуатации

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tina46e1-b (2017-12) BPG402.om
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6 Maintenance, Repair
DANGER
DANGER: contaminated parts
Contaminated parts can be detrimental to health and environment.
Before beginning to work, find out whether any parts are contaminated.
Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
Small deposits on the electrode system can be removed by baking the anode
(Degas
→  28). In the case of severe contamination, the baffle can be exchanged
easily (
→
 15). The sensor itself cannot be cleaned and needs to be replaced in
case of severe contamination ( →  46).
A slightly damp cloth normally suffices for cleaning the outside of the unit. Do not
use any aggressive or scouring cleaning agents.
Make sure that no liquid can penetrate the product. Allow the product to
dry thoroughly before putting it into operation again.
Gauge failures due to contamination, as well as expendable parts (e.g.
filament), are not covered by the warranty.
The gauge is factory-calibrated. Through the use in different climatic conditions,
fitting positions, aging or contamination (
→

28) and after exchanging the sensor
(
→
 46) a shifting of the characteristic curve can occur and readjustment can be-
come necessary. Only the Pirani part can be adjusted.
At the push of a button the digital value and thus the analog output are adjusted
electronically to +10 V (1000 mbar) at atmospheric pressure.
Adjustment is necessary if
•
at atmospheric pressure, the measured value is < atmospheric pressure.
•
venting the system, the measured value reaches its maximum before the actual
pressure has reached atmospheric pressure.
This applies to the analog output signal, the pressure value indicated by the
gauges featuring a display and the pressure value output by the digital interfaces.
•
Pin approx. ø1.3 × 50 mm (e.g. a bent open paper clip)

Operate gauge for approx. 10 minutes at atmospheric pressure.
If the gauge was operated before in the Bayard-Alpert range, a
cooling-down time of approx. 30 minutes is to be expected
(gauge temperature = ambient temperature).
6.1 Cleaning the Gauge
6.2 Adjusting the Gauge
6.2.1 Adjustment at
Atmospheric Pressure
Required tools
Procedure