Dissolved CO₂ instruments are analytical devices that measure the amount of carbon dioxide (CO₂) dissolved in a liquid sample such as water.

Gas and air instruments detect, monitor or analyze gases present in an environment.

Gas sensors interact with a gas to initiate the measurement of its concentration.

Smoke detectors are designed to sense the products of combustion.

Flame detectors monitor and analyze incoming radiation at selected wavelengths.

Carbon dioxide (CO₂) lasers use the energy-state transitions between vibrational and rotational states of CO₂ molecules to emit at long IR, about 10 µm, wavelengths.

Positive displacement flow meters measure the volume or flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes.