Sentry 5000-32-IT Controller
Page 25 of 82
3.4
Sensor Modules
– General
Avoid installing sensor modules where they will be unnecessarily exposed to wind, dust, water (esp.
direct hose down), shock, or vibration. Observe temperature range limitations.
Sensors may be adversely affected by prolonged exposure to certain materials. Loss of sensitivity, or
corrosion, may be gradual if such materials are present in low concentrations. These materials include:
Halides (compounds containing chlorine, fluorine, bromine, iodine), silicones, acid vapors, caustic liquids
or mists.
Care has been taken by the manufacturer to ship your modules in protective packaging to avoid
contamination prior to installation. It is recommended that the sensors remain protected during installation
and that the covering be removed immediately prior to system start-up.
During normal use the sensor is protected from dirt and oil contamination by a sintered metal cover. If this
cover becomes clogged, the response of the sensor will be reduced. Protect the sensor from
contamination by careful placement, or by use of rain and dust shields.
Sensor modules must not be painted. Paint may contain compounds which will contaminate the sensor.
Paint will cause clogging of the sintered metal cover and will cause difficulties during attachment of the
calibration head or other maintenance activity. It is recommended that the module be tagged "DO NOT
PAINT".
When sensors are replaced the thread must be Teflon taped to avoid metal to metal binding which will
damage the housing threads.
3.5
Combustible Sensor Modules
Catalytic type combustible gas sensors may be poisoned by exposure to silicones. Sierra Monitor
Corporation supplies resistant sensors, but care should be taken to avoid exposure to silicones. No
Silicone caulking (RTV) should be used near the sensors. No other silicone-based compounds should be
used near the sensors unless they are fully protected during the entire cure cycle. If the sensors will be
exposed to silicone during normal operation the manufacturer's sensor warranty is void.
Содержание Sentry 5000-32-IT
Страница 28: ...Sentry 5000 32 IT Controller Page 28 of 82 Figure 15 Analog Input Wiring ...
Страница 29: ...Sentry 5000 32 IT Controller Page 29 of 82 Figure 16 PSG Sentry Classic Wiring ...
Страница 30: ...Sentry 5000 32 IT Controller Page 30 of 82 Figure 17 Modbus Wiring ...
Страница 31: ...Sentry 5000 32 IT Controller Page 31 of 82 Figure 18 Top Board Relay Digital Output Wiring ...
Страница 32: ...Sentry 5000 32 IT Controller Page 32 of 82 Figure 19 Analog Output Wiring ...
Страница 33: ...Sentry 5000 32 IT Controller Page 33 of 82 Figure 20 Digital Input Wiring ...
Страница 34: ...Sentry 5000 32 IT Controller Page 34 of 82 Figure 21 Bottom Board Relay Wiring ...
