MultiExact Gas Analyser 7 – General operation
7.4 Checking the mA output (option)
If required, use the following procedure at any time to perform a check on a mA output:
1. Select
Service
mA output.
2. Select the required 'Override' option.
3. Edit the displayed override value as
described in Section 4.10.
4. Press the
acceptance screen showing "No" will
then be displayed. Select
apply the override.
Figure 94 – The mA output
override screen
5. The mA output will now be set to the override value you have selected. Use
your control/monitoring equipment (connected to the analyser) to check that
the output is correct.
The milliAmp output freezes at the override value as long as the 'Override'
screen is displayed. As soon as another
screen is displayed, the milliAmp output
value will be updated to reflect the corresponding gas measurement.
7.5 Checking the voltage output (option)
See Section 7.4, the voltage output override operates in the same manner as the
milliamp output override, but ranges from 0 – 10 volts.
7.6 Switching off the analyser
After you have switched off the analyser, when required or as necessary (for example,
if you need to carry out plant/factory maintenance and will not use the analyser for
several days):
• Ensure the gas inlet and outlets are blocked off (closed valve or protective caps
supplied).
• Isolate/lockout the external electrical supply and disconnect the electrical supply
cable from the analyser.
05410001A / Revision 6 77
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