What is the difference between an explosion-proof dual detector and a single detector?

The explosion-proof single detector detector refers to a detector that contains only one detection technology, and in order to overcome the defects of the single technology detector, usually two detectors with different technical principles are integrated together, only when the two detection technology sensors Detectors that only detect when there is movement of the human body are called explosion-proof dual detectors.

The common explosion-proof dual detectors on the market are mostly microwave + passive infrared, and there are also infrared + air pressure detectors and audio + air pressure detectors. In order to further improve the performance of the detector, the detector with microprocessor technology added on the basis of the explosion-proof double-detector detector is called the three-detector detector. Add another technology detector to the three-detector detector to become the four-detector detector.

Features of explosion-proof dual detector

1. Microwave and passive infrared detection, and through fuzzy logic digital analysis, to eliminate all kinds of interference that ordinary detectors can not overcome, only to alert the human body movement, to prevent false alarms and false alarms, the performance far exceeds each without microwave function An explosion detector.

2. Adopt full-range precision temperature compensation, no matter how the ambient temperature changes, the detection sensitivity is always the same, there is no temperature dead zone (general detectors at 32 ℃ ~ 40 ℃, the sensitivity drops significantly, or it is easy to misreport in other temperature zones )

3. Microwave detection is stable and reliable, with strong anti-interference ability, large coverage and wider range, and can be set up in the visual area.

4. Programmable function, with great application flexibility.

These are the characteristics of the explosion-proof dual-detector detector, because of its low false alarm rate and powerful performance, many petrochemical sites, gas pipelines and other places are widely used.