Dalian Actech

Zero Poisoning, No Ageing and No Cross-sensitivity: Electrochemical detectors are always in direct contact with the gas. They are prone to ageing as the measurement principle is based on a chemical reaction depleting the sensor substance. This leads to short life times. As the laser gas sensor is an optical detector without direct contact to the gas, it is not at all subject to poisoning or degradation. Humidity and pressure changes around normal atmospheric conditions have no influence. Calibrations are enduring and recovery from high concentrations is instantaneous. Continuous Sensor Status Monitoring for Functional Safety: The European norm IEC 61508 is regarded as "good practice" for security sensors. High Dynamic Range: The high dynamic range of the laser gas detector makes it very versatile for many applications, without the need to use 2 or 3 different detection technologies in the same instrument to cover the range of interest.

Currently the following gases are available: CH4, C2H6, C3H8, C4, C5, C2H2, C2H4, NH3, HCL, H2S, CO, CO2 and H2O. Further gases that can be measured: HF, N2O, NO, NO2, PH3, HI, HBr, HCN, H2CO, etc. Gases that do not have near-infrared absorption bands cannot be measured. These include H2, N2, O3, Cl2, He, Ne, Ar, etc.