Calibration And Sensor Setup - ABB Endura AZ40 Manual

7

Calibration and sensor setup

CAUTION – Minor injuries
Do not attempt to setup the transmitter unless the
sensor and transmitter are fully installed and ready for
operation.
Ensure all electrical connections have been made and switch on
the power to the transmitter. If the sensor is being
commissioned for the first time, sensor calibration and set-up is
recommended for best results.
IMPORTANT (NOTE)
— Before attempting calibration ensure the correct test
gas values have been entered – refer to Operating
instruction OI/AZ40-EN.
— Refer to page 34 for menu overview.
– Refer to Operating instruction OI/AZ40-EN for menu
descriptions.
Test gas recommendations
The zero test gas should be the test gas of lowest oxygen
content. The span test gas should be the test gas of highest
oxygen content.
IMPORTANT (NOTE)
Although the lowest and highest CO test gases may be
combined with the oxygen test gases in any order, for
maximum accuracy when measuring sample gases of
low oxygen content (for example, combustion
processes), it is recommended that the CO span test
gas is combined with the lowest oxygen test gas (zero
gas). The span gas can be air from a compressed air line
(20.95 % O ) if a 0 to 25 % oxygen range is selected –
2
recommended.
28
Manual (test gas) calibration
To perform a manual calibration at the transmitter:
1. From any Operator page, press the
prompt).
Autoscroll
In Conf Alarm
The Calibrate level screen is displayed:
Menu
Calibrate
Exit
2. Press the key (below the Select prompt) the Manual
Calibration menu option is highlighted:
Calibrate
Manual Calibration
Back
key (below the CAL
CAL
Select
Select
CI/AZ40-EN Rev. A