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Microx User Manual
Rev. 1.2 V233P Page 23
4.2.9 Menu 9
– Factory Only
Warning
Customer adjustment of this setting is not permitted. The module will
be factory set prior to shipment to the correct Sensor supplied with the
Analyser.
4.2.10 Menu 10
– Zero offset
For ppm configured modules a “Sensor Zero Offset” value will need to
be entered or re-entered each time the ppm sensor is replaced. The
appropriate value will be marked on the ppm sensor and this figure will
need to be programmed in to the module. A zero offset figure allows
accurate calibration of ppm sensors that do not give a zero output for
zero gas.
The zero offset value is expressed in PPM oxygen and takes a value
of between -10.0 and +10.0 ppm.
•
Press MENU to open the menu system.
•
Using the NEXT and PREVIOUS buttons, select menu option:
E:10
•
Press ENTER. The display shows the zero offset.
•
Use the UP / DOWN keys to set the level at that marked on the
sensor.
•
Press ENTER to store the new value in the memory.
Note: Pressing the MENU button rather than the ENTER button
exits without any change.
•
Press MENU to close the menu system.
Note: The zero offset must be programmed prior to a menu 1 calibration.