Fluid Components International”s FlexSwitch FLT pump-protection flow switch is designed to improve process control by adding an extra margin of safety, keeping pumps running longer and more reliably with less frequent maintenance over an expanded lifetime to reduce total operational costs. The Flow/Level/Temperature (FLT) switch monitors the flow and temperature of liquids, gases, slurries, syrups, lubricants, coolants, etc. It is ideal for wet/dry detection in protecting pumps, where sudden, unexpected reductions in media flowrates may leave pumps vulnerable to over-heating conditions that can result in bearing or seal damage that require major repairs or shorten their useful life. With Alarm 1, the switch will detect a low-flow situation anywhere between 0.01 and three feet per second (FPS, .003 to.9 meters per second MPS). This low-flow alarm can be regarded as a pre-warning signal for the control system or operator. The system or operator can then decide to keep the pump running or to shut it down. If an Alarm 2 occurs because the feed line to the pump is running dry, this condition would be an emergency signal to shut down the pump immediately because the bearings now see gas instead of a liquid as a heat transfer media. The FLT features a wide set-point range, which varies according to service media (liquid, gas or foam), beginning from 0.01 to 3 SFPS (0.003 to 0.9 SMPS) in water-based liquids. It is hydrostatically proof pressure tested to 3500 PSIG [240 bar (g)] at 70 F (21 C). Derated with temperature, the maximum operation service recommended is 2350 PSIG [162 bar (g)] at 500 F (260 C). Higher ratings are available with special construction and test certification. Agency approvals include: FM, ATEX, CSA, CRN and CE.