Temperature Sensing

Temperature Sensing

Temperature can be a very difficult measurement to make, particularly in harsh electromagnetic environments where conventional electronic sensors cannot operate due to interference. Over a number of research projects the Centre has been engaged in the development of temperature sensors for use in such situations. We have specifically been developing measurement techniques for use with a Microwave Industrial Free Electron Laser. The laser is used to process materials such as epoxies and liquid chemicals by irradiating them with high power microwaves. Through the use of phosphor coatings and photoluminescent quenching we have developed intelligent glassware which can be used to determine the temperature of a liquid within it in an optical, non-contact fashion. A development of this technique sees an array of phosphor coatings on a single fibre being able to determine the temperature at a number of different points along the fibre.