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SEP-OCT 2018

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INTECH SEPTEMBER/OCTOBER 2018 43 EXCELLENCE AWARDS Speeding up process analytics For developing a new wavelength range for tun- able diode laser absorption spectroscopy gas analyzers, this year's Award for Excellence in Ana- lytical Technical Innovation goes to Peter Geiser, PhD , the chief technology officer at NEO Monitors of Norway. Geiser earned his undergraduate and master's degrees in physics at Clausthal University of Tech- nology in Germany in 2002, and then joined the s taff of the Department of Applied Photonics at the Institute for Physics and Physical Technolo - gies at Clausthal, earning his PhD in 2006. He then became a research scientist at Norsk Elektro Optikk AS, where he was the project leader for development of mid-infrared spectroscopy and led the development of the "LaserGas Q" prod - uct family. In 2015–2016, he served the company as acting chief technology officer, and in 2017 he was appointed to that position. Geiser is a member of the Optical Society of America (OSA) and has served as a publications reviewer for the Institute of Electrical and Elec- tronic Engineers and OSA. Further, he served on the technical program committee for CLEO Eu rope 2015 on the topic of photonics in defense Don Bartusiak, PhD Peter Geiser, PhD and security, and in the same role for the 2018 Norwegian Electro-Optics Meeting. He is the coauthor of four refereed journal papers, on topics rang- ing from continuous emissions monitoring using lasers to chemical detec- tion using lasers. Additionally, he has presented more than a dozen papers at professional conferences. The Laser-Q sensor line developed by Geiser provides real-time deter- mination of gas concentrations in process streams by sending a light beam through the gases to a detector on the opposite side of the stream. The sen - sor emits a different light frequency for each gas it measures. By measuring the intensity of the light that passes through the stream, and its absorp - tion, the sensor returns a report of the gas concentration in less than one second. The need to sample the gas, and transport the sample elsewhere, is eliminated. As NEO describes the sensor, "The single frequency charac - teristic of the diode laser makes it possible to measure the absorption of a particular gas using only one single absorption line, thus avoiding effec - tively the interference from other gases in the same gas volume, resulting in a highly accurate instrument capable of measuring very low concentration levels when required." A unique frequency is required for each gas, and the sensor presently measures concentrations of four gases: SO 2 , O 2 , CO, and CH 4 . The ability to measure additional gases is in development. In addition to measuring gas concentrations, the sensor has found appli- cation in cement manufacturing, where concentrations of explosive dust must be avoided. The improved speed of the measurement improves the speed of response to problematic conditions, enhancing safety, and the sensor is less susceptible to problems arising from exposure to dust or its accumulation, minimizing the need for service and maintenance. n ABOUT THE AUTHOR Bob Felton (BobFelton@gmail.com) is a freelance writer from N.C. Your Global Automation Partner Expand your communication capabilities and reduce costs with innovative multi-protocol on-machine I/O. Whether you are using one communication protocol or several, Turck ensures you get fl exible, future-proof fi eldbus solutions. Our vast range of rugged on- machine I/O streamlines your processes and is ideal for out of the cabinet applications. Reduce PLC Costs with Multi-protocol On-Machine I/O 1-800-544-7769 www.turck.us

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