Thyracont VSH87D, Руководство по эксплуатации

Страница: 45 / 64

45
The degas procedure will stop automatically after approx. 3 minutes, but can be
cancelled any time by again connecting pin 9 in the above mentioned manner.
While the sensor is degassing the red status LED is flashing slowly in red color.
Degas Control via Software Command
See section 5.8.
4.4 Readjustment
The transducer is adjusted ex works with 24 V voltage supply in upright position,
flange to the bottom. Other orientation, operation under different climatic conditi-
ons, extreme temperature changes, ageing or contamination can result in the need
for readjustment of the Pirani sensor.
Readjustment by Pushbutton
Digital readjustment at atmosphere or zero pressure can be done by means of the
»Adj« pushbutton, see operation scheme in section 4.2. The transducer will notice
automatically which adjustment point is relevant.
For zero adjustment actual pressure should be less than
5.0x10
-5
mbar.
To achieve optimum results of the adjustment we recommend to
consider a warm-up of at least 10 minutes at the appropriate cali-
bration pressure before any adjustment.
VSH-RS485-200116