In many industries, such as oil and gas, chemical, environmental protection, etc., accurate and rapid detection of gases in the environment is very important. To achieve this goal, scientists have designed various types of gas detectors. Among them, the pumping gas detector and the diffusion gas detector are two common devices. Although they are all used to detect gases in the environment, there are significant differences in their working principles and application areas. The main differences between the two devices are discussed in detail below.

First of all, from the working principle, the pump suction type and diffusion type gas detector are very different. Pumping is done by taking samples of air from the environment and then sending these samples to a detector for analysis. Such devices usually have a built-in pump that draws an air sample into the detector. The diffusion gas detector is analyzed by allowing the gas in the environment to naturally diffuse into the detector. This device does not have a built-in pump, but relies on the natural diffusion of gas.