Kunak H2S sensor
The H2S cartridge has a built-in electrochemical sensor very sensitive to its target pollutant allowing it to detect small changes in H2S concentration. This cartridge also responds to methyl mercaptan (CH4S) and other total reduced sulphur compounds (TRS). The limit of detection according to the maker is 2 ppb. To cover different applications, there are 2 measurement ranges: Type A: detects low ppb concentrations in real environments. Although the Kunak algorithm corrects the temperature variations well, it is not recommended to use this cartridge to measure levels below 15 ppb. Type B: a higher range version that can measure up to 20 ppm, not so precise at low concentrations.