Model S800
11
3.8 Sensor
Poisons
Sensors may be adversely affected by prolonged exposure to certain atmospheres. The
important contaminants are:
•
Silicones contained in greases or aerosols are the most common “coating” agents,
which reduce sensor response.
•
Prolonged exposure to Hydrogen Sulfide (H2S) gas.
•
Halides – compounds containing Fluorine, Chlorine, Bromine and Iodine.
•
Heavy Metals (e.g., Tetraethyl Lead).
•
Other damaging materials which attack the sensor physically include mineral acids
and caustic vapors.
•
The presence of such poisons and vapors does not exclude the use of General
Monitors catalytic bead sensors, however, a careful analysis of ambient conditions
should be aware that sensor calibration may need to occur at more frequent
intervals.
Summary of Contents for S800
Page 14: ...Model S800 10 Figure 2 Color Coded Wiring Connections ...
Page 28: ...Model S800 7 4 Module Base Assembly Figure 13 Module Base Assembly 24 ...
Page 29: ...Model S800 7 5 Power Supply Assembly Figure 14 Power Supply Assembly 25 ...
Page 30: ...Model S800 7 6 Detector Housing Assembly Figure 15 Detector Housing Assembly 26 ...
