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2 adjusting the atmospheric pressure sensor – INFICON PCG55x ATM to Medium Vacuum Gauge User Manual

Page 60

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60

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6.2

Adjusting the Atmospheric Pressure Sensor

The ambient pressure of the gauge is measured by a separate
atmospheric pressure sensor built into the electronics unit of the
gauge.

The atmospheric pressure sensor can be calibrated against the
diaphragm capacitive sensor in the gauge. The gauge
electronics compares the output signals of the two sensors and
carries out the necessary adjustments to the atmospheric
pressure sensor signal.

The adjustment of the atmospheric pressure sensor can

only be carried out via
• the diagnostic port (→  [3])
• the DeviceNet, Profibus, EtherCAT and RS485

interface (

→  [3], [4], [5], [6]).