Operation
11
6
Operation
6.1
Before switching on
After switching on the power supply, the transmitter is ready for operation. It is advisable
to wait for a stabilization period of 5-10 minutes before measurement. Operate the trans-
mitter during the measurement continuously independent of the applied pressure.
6.2
Removal of components for their maintenance
Switch off the power supply on the control unit/power supply or disconnect the equip-
ment from the mains supply.
Loosen any connection cables.
Detach the transmitter from the vacuum apparatus.
Close the flange opening by using the original protective cover.
7
Maintenance
The unit requires no maintenance. A damp cloth can be used to wipe away any external
dirt.
7.1
Adjusting the transmitter
The gauge is factory calibrated at 24 V supply voltage. Through the use in different cli-
matic conditions, through extreme temperatures, deviating supply voltage, contamina-
tion or ageing a shifting of the characteristic curve can occur and readjustment might be
necessary. The adjustment does not affect the pressure range between 10
-2
and 10 hPa.
Before adjustment, the transmitter should be operated at the relevant pressure for ap-
prox. 5 ... 10 minutes (warm-up time).
For correct zero point adjustment, the pressure in the vacuum chamber must be
p
≤
1
·
10
-5
hPa.
WARNING
Contamination of transmitter parts possible due to the media measured!
Poisoning hazard through contact with harmful substances.
In the case of contamination, carry out appropriate safety precautions in order to pre-
vent danger to health through dangerous substances.
Decontaminate affected parts before carrying out maintenance work.
CAUTION
Vacuum component!
Dirt and damage impair the function of the vacuum component.
When handling vacuum components, ensure that they are kept clean and are protec-
ted against damage.
Ensure that the connection flange is clean, dry and free of grease.
