Four-in-one gas detector how to test gas

With the diversification of combustible gas detectors, there are other gas detectors in the market. People’s work and life safety have some prevention and protection.

Control four-in-one gas detector? A special type of circuit is used to measure the detector current in two points. When the flammable gas enters the circuit chamber, half of it is warm enough to ignite the gas, which contains one or the combustion catalyst. When the gas burns, the flow of electricity in the current test area changes and the circuit flow is changed. This change triggers the alarm device.

Infrared flammable gas detectors work in a completely different way. Due to the gas entering the test chamber, one beam shot it. It actually reached the gas; half entered the gas of one receiver and the other returned to the transmitter. The detector measures two beams of intensity to determine if combustible gases are present. When the beam is the same, everything is fine, but changes in beam strength at the gas side may indicate problems.

Gas detectors need to pay attention to toxic gas detection. First of all, we must pay attention to the inherent problems: according to the chemical stability of toxic gases, at a relatively high concentration of regulatory levels and other characteristics. Because they rely on the air flow is not actively pulling, and the sample, the response time is generally slower. Four-in-one gas detectors are often more difficult to calibrate and require special fittings to convert and operate through a diffusion-targeted diffusion mode of operation. In addition, through the flow between monitoring and calibration through monitoring implies that diffusion equivalence is not always a good record.

Second, the calibration can be further complicated if adjustments must be made in the control panel while the gas is applied to the remote diffusion gas detector sensor head. In some applications, there may be interfering gases. The sample drawing method allows the chemical scrubber to place the sensor upstream, absorbing interferences. All gas sensors measure the partial pressure and actively draw the sensor's sample to be at a slightly elevated pressure while the ambient pressure sensor is working for diffusion. Therefore, the output sensitivity of the sample-drawing sensor is usually higher than that of a diffusion sensor. This may be an important regulatory level with many toxic gases. But how many toxic gases will have the necessary characteristics.

The dangers caused by the leakage of toxic gases at the treatment plant are in many industries, including chemicals, oil/gas, electric utilities, food and beverages, pharmaceuticals, pulp/paper, and sewage treatment. Leakage sources usually include pipes, valves, tanks, burners, freezers, separators, lighting systems, aeration tanks and other equipment.

The flammable gas detector is a device that senses harmful gases and reminds people of the existence of danger. There are two main methods for detecting combustible gases: control of combustion and infrared technology. These methods all have their own advantages and disadvantages, although infrared methods are generally a safe whole. In addition to four-in-one gas detectors, there are a number of devices that detect non-flammable and harmful gases.