Principle and application of pump-type gas detector
When we use gas detectors, we often encounter various types of instruments with different detection principles. Among them, pump-type gas detectors are widely used. However, due to users’ insufficient knowledge of gas detection and limited relevant experience, As a result, the pump-type gas detection alarm cannot be used or maintained. Today we will explain to you the principle and application of the pump-type gas detector.
Detection principle of pump-type gas detector
The working principles of pump-type gas detectors and diffusion-type gas detectors are the same. The sample gas is detected through the sensor of the instrument, and then amplified and converted into corresponding values through the circuit and displayed on the screen. For combustible gases, catalytic combustion sensors are commonly used. , electrochemical sensors are commonly used for toxic gases.
The pump-type gas detector is equipped with a small air pump in the instrument. Its working method is that the power supply drives the air pump to pump and sample the gas in the area to be measured, and then the sample gas is sent to the instrument for detection.
Advantages and disadvantages of pump-type gas detectors
The advantages of the pump-type gas detector are: fast detection speed, long-distance measurement in dangerous areas, and the safety of maintenance personnel. Others are the same as the diffusion-type gas detector.
The disadvantage is: the price is relatively expensive.
Application of pump-type gas detector
Pump-type gas detectors are often used in more special occasions, such as gas concentration detection in tunnels, pipelines, sewers, tanks, sealed containers, etc. that are not suitable for people to enter or are difficult to enter. Common ones include: pump-type oxygen detector, pump-type hydrogen sulfide detector, pump-type chlorine detector, pump-type hydrogen chloride detector, pump-type combustible gas detector, etc.
