Four-in-one gas detector is standard can be detected at the same time oxygen, hydrogen sulfide, carbon monoxide and combustible gas, can also be according to their own needs any free air with, while supporting custom two-in-one, triple. Four-in-one chip technology greatly improves the gas detection response time and stability of the performance, and at the same time greatly improve the battery life. Advantages (down alarm and immediate alarm function) will continue to be retained on the product. Simple and comfortable - ergonomic design of the whole rubber shell to better enhance the grip waterproof and dustproof design, excellent ruggedness. The alarm is used to detect the ambient air by natural diffusion.
Toxic gas detection should be noted
First of all, we must pay attention to the inherent problems: according to the toxic gas chemical stability, at a relatively high level of regulatory level and other characteristics. Because they rely on air flow is not actively pulling, and the sample, the response time is generally slower. The four-in-one gas detector calibration is often more difficult and requires special accessories to be converted by flow calibration purposes for the purpose of diffusion mode of operation. In addition, the flow through the flow through the monitoring and calibration implies that the lower diffusion equivalence is not always a good record.
Second, the calibration can be further complicated if the adjustment must be made in the control panel while the gas is applied to the remote diffuse 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 and absorb the interferences. All gas sensors measure the partial pressure and actively draw the sensor sample at a slightly elevated pressure while working in the ambient pressure sensor to spread. Therefore, the sample drawing sensor output sensitivity is usually higher than the diffusion sensor. This may be important to monitor the level of much lower toxic gases. But how many toxic gases will have the necessary characteristics.