What are the common types of gas detectors?
The principle of gas detector can be divided into diffusion type and pump suction type. The so-called diffusion type refers to placing the probe in a hazardous area for detecting gases, diffusing the gas to be measured from space into the probe, and placing the alarm in the monitoring room for indication and alarm. And pump suction is to pump the gas to be measured into the detection probe, and the suction pump is set together with the gas built-in detector, which is set at the dangerous location of the gas to be measured, so as to detect the execution indication and alarm function.
According to the type of gas detected, it can be divided into toxic gas detectors and combustible gas detectors;
A detector that responds to the concentration of a single or multiple combustible gases. The intelligent sensing transmitter used in the detector is the most versatile combustible gas sensing transmitter. The infrared combustible gas detector is an ideal choice for the following application environments: frequent exposure to catalytic toxic gases, frequent emissions of highly flammable gases, oxygen deficient environments, and environments where detection is difficult to achieve
According to the detection method, it can be divided into: natural diffusion gas detector and pump suction gas detector;
Diffuse gas detector: It is a device that slowly introduces a sample gas into the instrument for detection as the gas in the detection area flows freely with the air, and needs to be placed on site. This method is affected by the detection environment, such as ambient temperature, wind speed, etc., and is not suitable for low-pressure gas sources. The advantage of a diffusion gas detector is that its cost is lower than that of a pump suction type.
Pump suction gas detector: The instrument is equipped with a gas sampling pump, which works by driving the power supply to extract and sample the gas in the test area, and then sending the sample gas into the instrument for detection. The characteristics of the pump suction gas detector are fast detection speed, remote measurement of dangerous areas, and maintenance of personnel safety. Suitable for situations where gas detectors cannot be placed on site and have special requirements for reaction speed, pressure difference, etc.
According to the number of detections, it can be divided into single gas detectors and multi in one gas detectors.
Single gas detector: using high-performance catalytic combustion sensors, it can be used for detecting various combustible gases in industries such as petrochemicals, environmental accidents, natural gas, liquefied petroleum gas, coal gas, etc., including hydrocarbons, liquefied petroleum gas, natural gas, hydrogen, etc.
Multi in one gas detector: a detection instrument that can be configured with a single gas or multiple gas sensors. It can be configured with a single, two in one, three in one, four in one, or optional four toxic gas sensors or optional single gas sensors for detection.
