Catalytic combustion, electrochemical technology |
Non-dispersive infrared technology |
Laser absorption spectroscopy |
The life span is generally only 1-2 years and needs frequent replacement |
The light source is easy to age |
20-year lifespan |
Frequent calibration is required, maintenance workload is large, and the overall cost is high |
Need to be calibrated regularly,
Large maintenance workload and high overall cost |
No need to adjust, maintenance-free, low cost |
Electricity is needed, underground areas without electricity cannot be used, and there is a risk of explosion |
Need electricity |
Optical inspection, no electricity needed at monitoring site |
Poor anti-interference, high false alarm rate |
Broadband light source, serious water vapor interference,
Interference with cross gas |
Fingerprint detection, no false positives, high reliability |
Poor reliability, high-concentration impact failure and poisoning problems |
The wavelength cannot be controlled,
Aging of the light source affects the test results |
Non-contact detection, 0-100% full scale |
The reaction speed is slow (30 seconds), and the alarm cannot be reported in time, and false alarms will occur |
The reaction speed is slow (10 seconds) |
The reaction speed is extremely fast, only 0.1 seconds, real-time and efficient detection |
Insufficient sensitivity to detect early trace leakage |
Insufficient sensitivity due to detection interference |
High sensitivity, can detect ppb gas |
The detection status cannot be monitored, and the failure cannot be found |
The wavelength of the light source cannot be precisely controlled |
Complete real-time monitoring of the operating status of the whole system |
