Friday, July 21, 2017

Laser Spectroscopy Applied to Oxygen Measurement

Combining the analytical function of laser spectroscopy with the simple installation package of an industrial transmitter, the Sick TRANSIC100LP provides direct real time in-process oxygen measurements in a wide range of industrial processes. The short video shows how the unit is easy to install and uncomplicated to operate as part of a process measurement and control system.

Fast results and low maintenance are hallmarks of TRANSIC100LP operation. There are no sample prep requirements and no consumables. Sick explains the operating principle of the transmitter in their technical data sheet...
"The TDLS Tunable Diode Laser Spectroscopy is primarily used in high-end gas analyzers and is characterized by its highly selective measurement capability. The oxygen properties are used for O2 measurement: That means O2 atoms in the near infrared range are stimulated at specific wavelengths. A laser diode modulates the radiation precisely over an absorption peak. The high-energy radiation transfers energy to the O2 atoms and the signals becomes weaker. In the measuring probe, the laser beam hits the O2 atoms and is weakened according to the concentrations of oxygen present there. A receiver measures the intensity of the arriving radiation and accurately determines the absorption. One distinct advantage of laser spectroscopy is it´s insensitivity to possible interference. For O2 in particular, there is no absorption of other gases in the range of sampled absorption peaks."
Watch the video for more detail and some application examples. Share your gas analysis requirements and challenges with process measurement specialists, combining your own process knowledge and experience with their product application expertise to develop effective solutions.