Varain FRG-720 Bayard Alpert Pirani Gauge - Ideal Vacuum Products
Varain FRG-720 Bayard Alpert Pirani Gauge - Ideal Vacuum Products
Varain FRG-720 Bayard Alpert Pirani Gauge - Ideal Vacuum Products
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4 Operation<br />
When the supply voltage is applied, the measurement signal is<br />
available between pins 2 (+) and 12 (–) (relationship between<br />
measurement signal and pressure → 14 and [1]).<br />
The Profibus gauge can also be operated via the corresponding<br />
fieldbus interface (Profibus) (→ [1] for details and further<br />
functions).<br />
Allow for a stabilizing time of ≈10 minutes. Once the gauge has<br />
been switched on, permanently leave it on irrespective of the<br />
pressure.<br />
4.1 Gas Type Dependence<br />
The measurement value is gas type dependent. The pressure<br />
reading applies to dry air, O 2 , CO and N 2 . For other gases, it has<br />
to be converted (→ 15 and [1]).<br />
tqma03e1 (2010-05) 23
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