General Monitors S800, Инструкция по эксплуатации

Страница: 22 / 32

Model S800
6.0 Sensor Assembly/Accessories
6.1 Notice
This chapter provides a description of the accessories that are used with the model
S800.
6.2 Sensor
Housing
General Monitors offers an MSHA approved explosion proof housing, UCISC #543308
that is rated for use in mines (Figure 8).
Figure 8: Sensor Housing Drawing
One end of the housing is tapped for use with a General Monitors sensor (3/4 NPT), while
the other end is tapped for use with an MSHA approved packing gland. The set screws
used to guard against vibration related loosening of both the sensor and packing gland nut
most be in place during operation, otherwise the MSHA explosion proof approval is void.
Once the sensor is installed/operating in the field, no attempt should be made to
disconnect the sensor, the conduit or the housing lid without removing power from the
Model S800 as such an act would compromise the explosion proof integrity of the field
device.
6.3 Splash Guard
General Monitors produces a universal splash guard, UCISC #455535 that has been
designed for use on all General Monitors combustible gas sensors (Figure 9).
The splash guard prevents water from sprays or equipment wash-downs from being
forced into the sensor cavity and affecting the response of the sensing element.
Constructed of rugged Valox plastic, it has a series of internal baffles to deflect water down
and away from the sensor. This guard is also threaded for simple
screw on installation.
18