WatchGas SST4 Micro Guide: Choosing a 4-Gas Detector, Reading ATEX Marking and Calibration Obligations
A field guide to the WatchGas SST4 Micro 4-gas detector: O₂, CO, H₂S and LEL channels, how to decode the ATEX II 1 G Ex ia IIC T4 Ga marking, the difference between a bump test and calibration, and where the device is not the right choice.