What problems have you met before using gas detectors?
Gas detector is a kind of instrument for gas leakage concentration detection, mainly includes portable and fixed gas detectors. The gas sensor is mainly used to detect the kind of gas existing in the environment. So what problems have you met before using gas detector?
First, what gases are included in the standard four-in-one gas detector?
Some people are not quite sure about the standard four-in-one gas detector, now simply say that the four-in-one gas is standard: flammable (methane) 0-100% LEL, carbon monoxide 0-1000PPM, oxygen 0-30 % VOL, hydrogen sulfide 0-100PPM. Suitable for use in many places. Workers entering confined spaces, such as reaction tanks, storage tanks or containers, sewers or other underground pipelines, railway tankers, shipping holds, tunnels, and other workplaces must perform on-site gas detection before personnel enter, and Testing outside confined spaces. At this time, you must choose a variety of gas detectors with built-in pumps. Because the gas distribution and gas types in different parts of the confined space (upper, middle, and lower) are very different. In general, the specific gravity of combustible gas is lighter, and they are mostly distributed in the upper part of the confined space; the proportion of carbon monoxide and air is similar, generally distributed in the middle of the confined space; while heavier gases such as hydrogen sulfide are present in the confined space The lower part. At the same time, oxygen concentration is also one of the types that must be detected.
Second,Difference between natural diffusion and pumping
Gas detectors know that there are two common detection methods, one is the natural diffusion type and the other is the pump type, but I don't know what the difference is. The natural diffusion type is to slowly sense the gas without applying any external force. The pump type uses a self-priming pump to inhale autonomously. For example, the human nose responds faster, so you need to look at the detection method to choose effective Detection of gas.
Third, what is the back measurement of nitrogen with oxygen
Oxygen and nitrogen are relatively common gases. The main components in the air are oxygen 30% and nitrogen 70%. Due to the high price of nitrogen-specific sensors, some people will choose to use oxygen sensors to measure nitrogen. The value of 100 minus oxygen is the value of nitrogen.
Last, Is the gas detector explosion-proof?
The gas detector depends on whether it has reached the explosion-proof level. The general explosion-proof level of the detector is BT3, BT4, CT3, so we can look at these explosion-proof levels when we purchase the test.
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Our gas detector can detect a variety of gases such as hydrogen sulfide, carbon monoxide, oxygen, sulfur dioxide, phosphine, ammonia, nitrogen dioxide, chlorine, chlorine dioxide, ozone, and combustible gases. It is widely used in petrochemical, coal, On-site testing in various places such as metallurgy, chemical industry, municipal gas, and environmental monitoring. It can realize the measurement needs of special occasions; it can detect the gas concentration or leak detection of tunnels, pipes, tanks, enclosed spaces, etc.