M&C 1803436, Инструкция по эксплуатации, Страница: 31 / 53

www.mc-techgroup.com PMA 50 EX | 1.01.04 31
For the gas mixture in example 2 the corrected total cross sensitivity then is calculated in good approximation
for 20.93 vol% oxygen:
0.7907 x -0.1182 vol% = -0.0935 vol%
The corrected total cross sensitivity with plus/minus sign change now can be used for the correction of the
full scale value calibration. In this case span has to be adjusted at:
20.93 vol% + 0.0935 vol% = 21.02 vol%.
21
CLOSING DOWN
If the system to be monitored is shut down for a short time, the analyzer should remain ready for operation.
No special measures are still required.
If the analyzer is to be shut down for a long period of time, it is recommended to purge the analyzer with dry,
clean inert gas (e.g. ambient air) to avoid damage to the measuring cell due to aggressive and corrosive
humid gases.
22
STORAGE AND TRANSPORT
Note
The analyzer should be stored in a protected frost-free area!
23
MAINTENANCE
Before carrying out any maintenance work, the safety requirements specific to the instalment and the process
must be heeded!
Warning
Dangerous voltage. Before performing any maintenance work, disconnect the an-
alyzer and all external circuits connected to the analyzer from the power supply.
For use in hazardous areas it is absolutely necessary to observe the ex-instructions!
Note
Only original spare parts and those corresponding to M&C specifications must
be used!