MGC 100/200
Instruction
0019-9322
3. Press and hold down the
f
2
button until the following displays appear.
Note that the instrument beeps 5 times when it enters the User Cal
mode, and then emits a steady tone indicating that the
f
2
button can
now be released.
An operator can abort this procedure by momentarily pressing the
f
2
button.
4. To calibrate the instrument using span gas, press the
f
3
button. The
following display will appear.
The top line represents the preset calibration value that corresponds
to the applied percentage of calibration gas. The bottom line repre-
sents the current N
2
O level. (Note that the calibration level is preset
to 99.5%, but this level can be changed using the optional BACH-COM
software.)
5. With the instrument’s pump turned OFF, open the gas regulator and
allow gas to
fl
ow until the bottom reading stabilizes; then press the
f
1
button.
If the gas calibration procedure was successful, the display will show
Cal OK
If the procedure was unsuccessful, the message
GasCal
Failed
will be displayed. If this happens, retry the Gas Calibration procedure,
ensuring that the analyzer is exposed to the correct concentration of
calibration gas. If the procedure is still unsuccessful, then the analyzer
must be returned to a Bacharach Service Center for evaluation.
6. This completes the Gas Calibration procedure. Turn off the regulator;
then remove and store the calibration accessories.
User Cal
f1-> Air
f3-> Gas
f1> 99.5
0.0
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