The difference between pump-type gas detectors and diffusion-type gas detectors
Gas detectors can be divided into pump-type gas detectors and diffusion-type gas detectors according to different sampling methods. The working principles of pump-type and diffusion-type gas detectors are basically the same. The sample gas collected is detected through the sensor of the instrument. . What are the differences between them? The following is an introduction to you.
What is a pump gas detector?
The pump-type gas detector has a small air pump built into the instrument. The air pump is started by the power supply to pump and 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 detectors slowly flow the gas in the detected area into the instrument along with the free flow of air for detection. This method is affected by the detection environment, such as ambient temperature, wind speed, etc.
Diffusion gas detector
The difference between pump-type gas detectors and diffusion-type gas detectors
1. Sampling method
The pump-type gas detector is used for sampling through air pumping, while the diffusion-type gas detector is used for sampling where air flows freely 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-type gas detector is very fast.
3. Application occasions
The diffusion type is mainly used in open places, such as open work workshops, while the pump suction type can be used in some special occasions, such as tunnels, pipes, sewers, tanks, sealed containers, etc. that are not suitable for people to enter or cannot enter and need to be inspected. Wherever possible, the pump suction type can be connected with external accessories for long-distance sampling and detection.
4. Cost
Diffusion gas detectors are characterized by low cost. Whether it is manufacturing cost or later maintenance cost, diffusion gas detectors are much lower than pump suction type.
This article is about the difference between pump-type gas detectors and diffusion-type gas detectors introduced by Wandi. If you want to know more about gas detectors, please add this site to your favorites.
