Calibrations - IMT Analytics FlowAnalyser Series User Manual

Operation

6.12 Calibrations

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In this submenu the oxygen sensor, MultiGasAnalyser OR-703 and all the pressure
and flow sensors can be calibrated / set to zero.
6.12.1 Calibration of pressure and flow sensors
These calibrations are necessary when the display of differential pressure, high pres-
sure or flow through open ports has a value that is greater than or less than zero. This
can occur if there are considerable temperature fluctuations.
Calibration resets all the values to zero.
When you have switched on the device, individual displays may devi-
ate slightly from the zero value until operating temperature has been
reached (approx. 10 to 15 min). Zero calibration should therefore
never be performed with the device cold.
During zero calibration there must be no pressure being applied to a
connection port, and care must be taken to ensure that there is no
flow through the two measuring channels.
Caution: If calibration is performed with the Zero! button, there is no
warning of it on the display of the device!
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