Ramsey DTR 131Flow/No-Flow Detector - Thermo Scientific - Process Systems - #1

Text version of the page

Product Specifications The Thermo Scientific Ramsey Granuflow DTR 131 and DTR 231 detect and monitor flow/no-flow conditions of bulk solids. Real-time flow data from the detectors allows you to monitor processes closely, leading to increased reliability, higher quality end product, reduced downtime and fewer hazards to jeopardize operators and equipment. Thermo Scientific Ramsey Granuflow DTR 131 & DTR 231 Microwave-Based Flow Detectors The Thermo Scientific Ramsey Granuflow DTR 131 and DTR 231 are low-cost, noninvasive, microwave-based instruments that detect and monitor flow/no-flow conditions of bulk solids in pipelines, ducts and air-slides, as well as at transfer points of chutes, conveyor belts and bucket elevators. Used for automation purposes, they efficiently optimize the use of machinery and energy by switching process equipment on or off as required. The RamseyTM Granuflow DTR 131 and DTR 231 have no moving mechanical parts, which eliminates wear and makes the instruments maintenance-free and trouble-free. Principle of Operation The Ramsey Granuflow DTR 131 and DTR 231 utilize the Doppler Effect. They measure the difference between emitted and reflected microwave frequencies. Their electronics emit a signal that is reflected by moving material. When the material is in motion, the returned signal is either higher or lower in frequency than the transmitted signal. No motion is present if the returned signal is the same frequency as the transmitted signal. Changes in the received microwave energy, due to things such as build-up in front of the antenna, do not affect flow/ no-flow detection. These detectors produce microwave energy at a level of 0.15 mW/cm2 (measured at the antenna horn), which is a much lower level than the international safety standard of 10 mW/cm2. They are certified to FCC-15F.