What is a diffusion-type gas detector?
The pump-suction type gas detector has a small built-in air pump. The air pump is started by the power supply to extract and sample the gas in the sampling point area, and then the sampled gas is sent to the sensor for detection.
What is a diffusion-type gas detector?
A diffusion-type gas detector is a device that allows the gas in the detected area to slowly flow into the instrument for detection as the air freely flows. This method is affected by the detection environment, such as ambient temperature, wind speed, etc.
Diffusion-type gas detector
Differences between the pump-suction type gas detector and the diffusion-type gas detector
Sampling method
The sampling of the pump-suction type gas detector is carried out by the air pump extracting gas, while the sampling of the diffusion-type gas detector is the free inflow of air into the instrument.
Detection speed
Since the sampling of the diffusion-type gas detector is affected by the air flow rate, its detection efficiency is relatively slow, while the detection speed of the pump-suction type gas detector is very fast.
Application scenarios
The diffusion type is mainly used in open areas, such as open workshops. The pump-suction type can be used in some special scenarios, such as tunnels, pipelines, sewers, tanks, sealed containers and other places that need to be detected where it is not suitable or impossible for people to enter. The pump-suction type can be connected with external accessories for long-distance sampling and detection.
Cost
The characteristic of the diffusion-type gas detector is its low cost. Whether it is the manufacturing cost or the later maintenance cost, the diffusion-type gas detector is much lower than the pump-suction type.
This article is an introduction to the differences between the pump-suction type gas detector and the diffusion-type gas detector provided by Wanandi for you. If you want to know more about gas detectors, please add this website to your favorites.
