Filter Sensing Technologies Inc (FST), spun-out from the Massachusetts Institute of Technology, is focused on developing advanced measurement and control technologies for energy consumption and environmental problems. The companyâs technologies include on-vehicle sensors and controls, filter cleaning and reconditioning equipment, and advanced instrumentation and diagnostic systems. FST has developed a line of radio-frequency (RF) sensors and diagnostic instruments with applications in gas and liquids filtration. The technology uses low-cost circuit chips similar to ones that transmit and receive RF signals in consumer electronic devices. Instead of using the chips to transmit wireless information, FSTâs RF sensors monitor changes in the actual wireless signal to measure soot emissions, detect build-up of material in filters, monitor changes in the composition of fluid blends, and measure related parameters in complex process control system
