Q4 CONTROLLER II Operation and Maintenance Manual
Q4 Controller II Operation Manual
- 18 -
Dec 02, 2021
85350-101-000 Rev A
6.4 Menu “Zero CAL”
All QEL digital sensors can be calibrated at the sensor side by one-person operation. Q4
Controller provides Remote Zeroing and Span Calibration functions for these sensors which
location is not accessible, so the remote calibration is a choice. Remote Zeroing Calibration is also
very convenient to zeroing a drifted digital sensor remotely.
Note:
Please check digital sensor specification, not every QEL digital sensor
supports remote calibration commands.
Only enabled sensor can be remote calibrated.
Procedure:
Select a Sensor and then press [Enter] button
The LCD will display current reading of the sensor and inquire if “Zeroing” now?
Apply zero gas to the sensor and wait until the reading is stable
Press [Enter] to Zero the sensor
If no error happens, it will display “Accepted” that means the calibration is successful and
the calibration information is accepted. Otherwise, it will display error information
6.5 Menu “Span Calibration”
Procedure:
Select a Sensor and then press [Enter] button
The LCD will display current reading of the sensor and inquire if “Span CAL”?
Apply calibration gas which concentration is defined at sensor side to the sensor head and
wait until the reading is stable
Press [Enter] to Span Calibration
If no error happens, it will display “Accepted” that means the calibration is successful and
the calibration information is accepted. Otherwise, it will display error information
