Laser determines gas concentrations

摘要

The Sitrans SL diode gas analyser is designed to measure concentrations of process and fl ue gases, and determine maximum and minimum oxygen concentrations in explosive environments. The device relies on the specifi c light absorption of various gases as light travels from the laser diode to the transmitter. The light's narrow bandwidth means it will only interact with a particular gas, producing a single-line spectroscopy reading. The analyser compensates for other factors such as dust and temperature.