- Corona Discharge Principle
Represented by models such as XP-1A, SMART-01B and DILO 3-033-R002, this type of detector features a leak detection sensitivity of 3g/year and fast response speed. Its drawback is that the sensor has a service life of only 20 hours, and the sensitivity will gradually decrease with prolonged use



2. Infrared Detection Principle
It can be divided into infrared principles using discrete components or tube-type structures, with an actual maximum sensitivity of up to 1 ppm. The tube-type infrared dual-wavelength principle offers better linearity and higher stability.
Infrared detectors based on discrete components can be categorized into qualitative and quantitative types:
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- Qualitative type: Represented by models such as SMART-200-FR and INFICON D-TEK (adopting discrete infrared sensors).
- Quantitative type: Represented by KSTONE LF-01-FR.
- Qualitative type: Represented by models such as SMART-200-FR and INFICON D-TEK (adopting discrete infrared sensors).
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Tube-type Infrared Sensor
3. High-Frequency Magnetic Field & Low-Voltage Ionization Principle
Leak detectors developed based on this principle boast three key advantages: ultra-high sensitivity, rapid response speed, and zero sensor wear.
The sensitivity can reach 0.01 ppm, the response time is less than 1 second, and the sensor service life is as long as 10 years.

