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 is to place the probe in the dangerous zone of the detection gas, and the gas to be measured diffuses into the probe from the space, and the alarm is placed in the monitoring room for indication and alarm. The pump suction type is to suck the gas to be measured into the detection probe, and the suction pump and the gas built-in detector are set together.
According to the type of detected gas, it can be divided into: toxic gas detector and combustible gas detector;
Detectors that respond to single or multiple flammable gas concentrations. The smart sensor transmitter used in the detector is a fully functional combustible gas sensor transmitter. Among them, the infrared combustible gas detector is an ideal choice in the following application environments: frequent exposure to catalytic toxic gases, frequent high-flammable gas emissions, 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;
Diffusion gas detector: The gas in the detected area slowly flows the sample gas into the instrument with the free flow of air for detection, which 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 air sources with low pressure. The advantage of diffusion gas detectors is that the cost is lower than that of pump suction.
Pump suction gas detector: The instrument is equipped with a gas sampling pump. Its working mode is that the power supply drives the gas sampling pump to extract and sample the gas in the area to be measured, and then sends the sample gas to the instrument for detection. The pump suction gas detector is characterized by fast detection speed, remote measurement of dangerous areas, and safety of maintenance personnel. It is suitable for occasions where the gas detector cannot be placed on site, and where there are special requirements for response speed, differential pressure, etc.
According to the number of detections, it can be divided into: a single gas detector and an all-in-one gas detector.
Single gas detector: using high-performance catalytic combustion sensor, it can be used in petrochemical, environmental accidents, natural gas, liquefied petroleum gas, coal gas and other industries to detect various combustible gases, including: alkane, liquefied petroleum gas, natural gas, hydrogen, etc. .
All-in-one gas detector: a detection instrument that can be configured with a single gas or multiple gas sensors, and can be configured with a single, two-in-one, three-in-one, four-in-one or four optional toxic gas sensors or optional single gas sensors test.
