Thyracont VD12, Operating Instructions Manual

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vd12-14-de-171016
To select a pre-defined gas type press the "set" key several times until
the cursor is flashing line "gas".
With the arrow keys select the appropriate gas from the list.
Confirm with "set".
To enter user-defined correction factors press the "set" key several
times until the cursor is flashing in the line "corr".
With the arrow keys adjust the required values.
Confirm with "set".
adjust : Transducer adjustment
The transducers are adjusted ex works with 24V voltage supply in
upright position, flange to the bottom.
Other orientation, operation under different climatic conditions, ex-
treme temperature changes, ageing or contamination can result in
the need for readjustment of the Pirani sensor.
For transducers VSM and VSH with combination sensors the
adjustment does only affect the Pirani sensor. Hot and cold
cathode sensors are not readjusted.
To achieve optimum results of the adjustment we recommend
to consider a warm-up of at least 5 minutes at the appropriate
calibration pressure before any adjustment.
For zero adjustment actual pressure should be less than
5,0x10
-5
mbar.
.
set
set
set
set