7-5
CO (CARBON MONOXIDE MODE)USER HANDBOOK
Note 2: A proper ‘DIF’ reading will only be obtained if there is a
preceding DIFZ (zeroing).
Note 3: Before viewing logs from the differential mode, a manual
‘zero’ must be performed as a reference point. If this has
not been done, since the last clear, a ‘zzz’ fault indication
will result.
If this option is enabled, the viewing display (Fig. 7.7) will be shown
before either CO Direct, Differential CO or Air Free CO.
Once viewed, the user can view the actual CO reading as per mode
previously selected.
To view actual CO reading:
• Press and hold OK .
Note: If CO Viewing is selected from the CO menu
(Fig. 7.1), the display has no OK option.
To exit from this option:
• Press and hold LH and RH buttons together.
To CLEAR (remove) existing readings from the display:
• Press and hold CLEAR .
Note: The values are stored in the datalogging memory for
future reference.
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