mru SWG100 BIOEX, User Manual, Page: 26 / 150

MRU GmbH SWG 100 BIO Ex User Manual
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5.3. CH4 measurement of inside cabinet
While the components internal to the instrument are verified to meet the type of
protection, it is nevertheless required to monitor the cabinet to prevent explosive
atmosphere being present. Therefore SWG100 BIO-EX implements a regular monitoring
of the CH4 content inside the cabinet with the help of the CH4-NDIR bench used for
biogas measurement.
In case an explosive atmosphere is detected inside the cabinet, the SWG100BIO-EX
outputs an alarm signal to the remote power supply box, which interrupts the power
supply of the full instrument.