60 TX9165-UM-EN-07
Zero
From the Sentro eModule Setup Menu,
use the navigation keypad, scroll to Calibrate
and select OK.
If a Security Code has been enabled you will
be prompted to enter it, enter the Security
Code and select OK.
The screen will display an arbitrary reading.
Open the valve and apply clean air from the
test gas cylinder at a rate of 1 litre/min to
clear any gas from the sensor.
Wait for the reading to settle at a stable
value, not necessarily 0.
When stable select OK to Zero the reading.
If the Zero point continues to shift then
select OK again.
Close the valve and stop the supply of clean
air.
Disconnect the application tube from the gas
port.
Use the navigation keypad, scroll to Span
and select OK.
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