FIXED-POINT GAS DETECTION SYSTEMS

11/01/2003
BY ALAN AUSTINThroughout industry—from chemical and petrochemical processing to wastewater utilities and pulp and paper mills—workplaces have the potential to be exposed to toxic gases, combustible gases and vapors, and oxygen deficiency. In many cases, the primary line of defense in protecting workers and equipment from these atmospheric hazards is fixed-point, gas detection safety systems. These systems typically consist of one or more catalytic-bead (CB), metal oxide semiconductor (MOS), infrared (IR), or electrochemical (EC) sensor(s) strategically placed at sensitive locations throughout the facility. If a condition outside of acceptable detection limits (an alarm) should...

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