User`s guide

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12.3. MAINTENANCE WORK
The Maintenance menu can be used for :
- calibration
- programming
- cell changing
Ø
Ø
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C
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L
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B
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Among other things, the maintenance menu is used for :
§ calibration of the explo channel,
§ calibration of the oxygen channel,
§ calibration of the toxic channels.
The operation can be halted at any stage.
§ CALIBRATION OF THE EXPLO CHANNEL
To carry out the calibration of the explo channel, proceed as follows :
- Check the concentration of the calibration gas proposed.
If you change this value, it will be stored for the next calibration.
If the displayed value suits you, click on the Next button.
- COM2000 displays the message “zero adjustment in progress...” and
displays the value for a check.
When the zero measurement stabilises and appears to be correct, validate
it by pressing the Next button.
The MX2000 will accept the value if it falls within an acceptable range.
- Then inject the calibration gas at the concentration indicated, as
requested by COM2000.
Press the Next button, and the sensitivity measurement is displayed in
the same way as for zero adjustment.
- Validate the operation by clicking the Ok button when the measurement
has stabilised.