What is an infrared gas detector?
Infrared gas detector uses to detect gases in the atmosphere of infrared (IR) radiation. Every gas has its own IR track. This means that light absorbs a specific IR frequency or wavelength, a feature that is identifiable when using a suitable detector.
gas detectors generally indicate the existence of specific gases in the surrounding area and measure their concentration. They are mainly used in the detection of dangerous leaks and gas concentrations that exceed the safe limits, and when this is the case, it triggers some kind of alarm. A certain type, infrared gas detector, uses infrared radiation to identify the presence of potential risks in the nearby environment. IR sensors or receivers; Selective spectral filters that are placed pre -resosurers; and the measuring chamber where the gas sample is distracted. The space between the transmitter and the receiver is an optical path. The light beam must pass through this space to make the system to measure.
Simply put, the light source will emit light that covers a small area of the infrared spectrum, and the gas inside the measuring chamber absorbs a specific frequency or wavelength characteristic of the molecular structure. The absorbed wavelength is unique for each compound and this feature is used to identify it. The amount of absorbed radiation is a direct scale of gas concentration inside the chamber.
There are two main variations of conventional infrared gas detector. In the first system, the system uses two rays of the same wavelength in the IR of the electromagnetic spectrum area that comes from the same source. One is used as a reference beam and the other passes through the volume of gas. Both rays will move along various optical paths and - after the rays have received sensors - the system performs the necessary analysis.
In the second variation, the system uses two rays of different wavelengths. TYto rays move alternately along the same optical path. Both variations of infrared gas detectors have their advantages and disadvantages depending on the user's needs.
Infrared gas detector in its simplest form is designed to detect a single gas. There are also more complicated multi-plate detectors. Detected gases can be toxic, such as carbon monoxide or even flammable, such as methane or propane.