Safety

Fixed Ultrasonic Gas Leak Detection, an Integrated Technology in Modern Fixed Fire and Gas Detection Systems

Nov 21 2011

Author: Martin T.Olesen on behalf of Gassonic A/S

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For many years, the conventional sensor technology of choice used in fixed gas detection systems has been point gas detection sensors and open path gas detection sensors.

In the early 90’s, open path gas detection was introduced to help the industry to try to overcome some of the limitations of the point detector in outdoor installations. The open path gas detection systems consist of an infrared light transmitter and a receiver; if leaking gas is entering the path between transmitter and receiver, some of the infra-light energy is absorbed by the gas. The absorption of infrared light in the gas cloud can then be related to the total concentration of gas in the path between the transmitter and the receiver.

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