The difference between pump suction gas detector and diffusion gas detector
Gas detectors can be divided into pump-suction gas detectors and diffusion-type gas detectors according to different sampling methods. The working principles of pump-suction and diffusion gas detectors are basically the same, and the collected sample gas is detected by the sensor of the instrument. . And what is the difference between them, the following will introduce to you.
What is a pump suction gas detector
The pump-suction gas detector is a small air pump built into the instrument. The air pump is activated by the power supply to sample the gas in the sampling point area, and then the sample gas is sent to the sensor for detection.
What is a diffusion gas detector
Diffusion gas detector is to detect the gas in the area to be detected by slowly flowing the gas into the instrument with the free flow of air. This method is affected by the detection environment, such as ambient temperature, wind speed, etc.
Diffusion gas detector
The difference between pump suction gas detector and diffusion gas detector
1. Sampling method
The sampling of the pump-suction gas detector is through the air pump, while the sampling of the diffusion gas detector is the free flow of air into the instrument.
2. Detection speed
Since the sampling of the diffusion gas detector is affected by the air flow rate, the detection efficiency is relatively slow, while the detection speed of the pump-suction gas detector is very fast.
3. Application occasions
The diffusion type is mainly used in open places, such as open workshops, while the pump suction type can be used in some special occasions, such as tunnels, pipelines, sewers, tanks, sealed containers, etc. that are not suitable for people to enter or cannot enter. In some places, the pump suction type can be connected with external accessories for remote sampling and detection.
4. Cost
Diffusion gas detectors are characterized by low cost. Whether it is manufacturing costs or later maintenance costs, diffusion gas detectors are much lower than pump suction types.
This article is the difference between the pump-suction gas detector and the diffusion gas detector introduced by Wan Andy. If you want to know more about the gas detector, please add this site to your favorites.
