Automatic Calibration Value

The system is factory set to automatically calibrate to 20.7% O₂ to allow simple calibration in fresh air. The auto calibration value is factory set to 20.7% to take into account average humidity in the atmosphere. If a calibration with a gas of a different known O₂ concentration is required, the factory set value may be changed via the RS232 interface.

 

1. Connect the Mini-OX via the RS232 interface to the PC.

2. Press <ENTER>; the Menu Password screen displays.

3. Input your security password.

4. Press <ENTER> to access the Menu screens.

5. Type “2” to access theConfiguration menu.

6. Type “1” to access the Enter Auto Calibscreen.

7. Input the oxygen concentration (%) of the calibration gas as a number to 2 decimal places.

8. Press <ENTER> to save.

   NOTE:The new automatic calibration value is now stored in memory and is retained on power loss.

NOTE:If calibration is required with a different gas of known O₂ concentration and access to the RS232 menus via a PC is not available, a manual calibration must be performed. Refer to Manual Calibration.