Portable Toxic Gas detector Introduction Series – Part 2

Portable Toxic Gas detector Introduction Series – Part 2

  • The development of gas detectors stems from the very real human need, which is the early detection of concentrations of toxic gases present in the working environment.
  • It stems from being aware of toxic gases that can affect the health of furnace workers, and the first method of carrying canaries as an early warning system for the presence of toxic gases. Then modern electronic sensors are applied.
  • In part 2 of this series, we will briefly introduce the need for a toxic gas detection detector to meet the gas safety requirements in the working environment as well as the habitat. From the very rudimentary plan to date, there have been gas detectors that can measure a lot of different toxic gases.

Part 2 – History of formation and development

VOC ppbRAE 3000 Organic Compound Meter - Ability to measure nearly 300 types of VOC compounds

  • Methods of detecting gas leakage have become a concern after the effects of toxic gases on human health were discovered. Prior to modern electronic sensors, early detection methods of leakage were based on sensors with not very high accuracy.
  • Through the 19th and early 20th centuries, miners often carried canaries down tunnels with them like early detection systems of life-threatening toxic gases such as CO2, CO, CH4 …
  • Normally canaries are very singing birds, however they will stop singing and will die without removing these poisonous gases from the area, which is a warning signal for miners to quickly escape the danger zone.
  • Prior to the development of electronic carbon monoxide gas detectors in the 1980s and 1990s, Carbon monoxide was detected with a chemical paper, which would turn gray when exposed to Carbon monoxide. Since then, many technologies and electronics have been developed to detect, monitor and warn of the leakage of a wide range of toxic gases.
  • Since the cost and performance of electronic sensors have improved, they have been combined into a larger system. They were originally used in cars to control engine emissions, and gas sensors are now also used to ensure passenger safety and satisfaction.
  • Carbon dioxide measuring sensors are being installed in buildings as part of a ventilation control system. Sophisticated complex toxic gas sensor systems are being studied for use in a variety of industries such as medical diagnostics, monitoring systems and processing systems, beyond their original use in operating rooms. Monitoring and warning of CO and other hazardous gases is increasingly common and can be used as a legal requirement.
  • Initially, gas detection detectors were built to detect a single gas, also known as a single gas detector, but modern gas detectors can simultaneously detect 2 gases, 3-gas detectors simultaneously, or even models of standard 4-gas detectors. , a 5-gas detector or detector that detects 6 gases at a time.
  • New gas analyzeres and toxic gas detectors can disrupt the structure of a complex odor to identify a lot of gases simultaneously. For example, a meter of VOC organic compounds, with the same machine, but can detect hundreds of different VOC gases.
  • (Continue….)

by TES Industry

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