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0019-9376
Revision 0
57
Monoxor
®
XR User Manual
5.6 CO Sensor Calibration
5.6.1 Materials Required
• Calibration kit, P/N 0024-7059
• Gas cylinder: 500 ppm CO in air, P/N 0024-0492
5.6.2 CO Manual Zero Procedure
The CO zeroing process is done automatically during warm-up or manually using the
manual zero feature. To perform a manual zero, follow the steps below. If your instrument
is configured for CO auto zero, then skip this CO manual zero procedure and go to the CO
Sensor Span procedure that follows.
1. If not already done, turn ON the analyzer and display the Main Menu screen.
2. Use the UP ( ) and DOWN ( ) arrow buttons to select the SETUP menu and press ENTER.
3. From the Setup Menu, use the UP ( ) and DOWN ( ) arrow buttons to select the CO Zero
Setting parameter then press ENTER.
Figure 5-7:
Main Menu & Setup Menu Screens
4. From the CO Zero Setting screen, use the DOWN ( ) arrow button to select the Manual Zero
option then press ENTER. A reminder screen to place the instrument in fresh air is displayed.
Figure 5-8:
CO Zero Setting & Manual Zero Screens
5. Press ENTER and wait for the manual zero to complete.