The PTM500 automobile exhaust analyzer adopts the principle of non-spectrophotometric infrared absorption method.

The MS600S portable six-in-one gas detector is primarily used for the rapid and accurate detection of gas leaks or for alarming when gas concentrations exceed safe levels. It features a front-end digital sensor that can be replaced without disassembling the device. Each digital sensor is plug-and-play and intelligently recognized, allowing for the simultaneous configuration of multiple single digital sensors for the detection of a wider range of gases. The main gas detection principles employed include: electrochemical, infrared, catalytic combustion, thermal conductivity, and PID photoionization.

MS400-S portable four-in-one gas detector is mainly used to quickly and accurately detect gas leaks or alarms for excessive gas concentrations.