mru SWG 100 biogas, User Manual

Page: 14 / 141

MRU GmbH SWG 100 User Manual
Page 14 of 141
2.5. Special functions of the analyzer
H2Slow sensor protection (optional)
The instrument may be optionally equipped with a H
2
S
low
sensor. As this sensor typically shows
limited life time when experiencing high H
2
S concentrations, some precautions are taken to
protect the sensor:
•
The instrument is equipped with a cut-off solenoid valve and air purge pump to protect the
H
2
S
low
sensor, without impacting the results of all other sensors.
•
The purge unit is always activated after 3-10 minutes of active sensor measuring time.
•
The measuring time of the H
2
S
low
sensor may be limited to less than 10 minutes by user
setting
•
The H
2
S
low
sensor may optionally not be included in all measuring cycles of sampling
points. Instead the user may configure that the H
2
S
low
sensor is active only added at some of
the measurement cycles.