The difference between pump-type gas detector and diffusion-type gas detector
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 powered on to extract 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
A diffusion gas detector is a method in which the gas in the detected area slowly flows into the instrument for detection along 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 a pump suction gas detector is done by pumping air with an air pump, while the sampling of a diffusion gas detector is done by the free flow of air into the instrument.
2. Detection speed
Due to the influence of air flow velocity on the sampling of diffusion gas detectors, the detection efficiency is relatively slow, while the detection speed of pump suction gas detectors is very fast.
3. Application scenarios
Diffusion type is mainly used in open environments, such as open workshops, while pump suction can be used in some special situations, such as tunnels, pipelines, sewers, tanks, sealed containers, etc. that are not suitable for people to enter or cannot be entered. Pump suction can be equipped with external accessories for remote sampling and testing.
4. Cost
The characteristic of a diffusion gas detector is its low cost. Whether it is manufacturing cost or later maintenance cost, the diffusion gas detector is much lower than that of a pump suction type.
This article introduces the differences between pump suction gas detectors and diffusion gas detectors by Wan Andi. If you want to learn more about gas detectors, please add this website to your favorites.
