Agilent Technologies IMG-500, Руководство пользователя

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Compact Cold Cathode Gauge IMG-500
22
4 Operation
When the supply voltage is applied, the measuring signal is
available between pins 3 and 5. Over the whole measurement
range, the measuring signal is output as a logarithm of the
pressure (measuring signal vs. pressure

"Technical Data").
The LED on the gauge indicates the
operating state: Supply voltage
on.
No supply
voltage.
Caution
Turn on the gauge only at pressures <10
-2
mbar to
prevent excessive contamination.
If you are using an Agilent measurement unit for
Compact Gauges with at least two gauge connec-
tions, the cold cathode gauge can be controlled, for
example, by a Pirani gauge.
Gas Type Dependence
The measurement value depends on the type of gas being
measured. The value displayed is accurate for dry air, O
2
, CO
and N
2
. It can be mathematically converted for other gases
(

"Technical Data").
If the gauge is operated in connection with an Agilent vacuum
gauge controller, a calibration factor can be entered for correc-
tion of the reading.