Dual alarm capability

With Alarm 1, the switch will detect a low-flow situation anywhere between 0.003 to 0.9 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.  In such situations, the temperature of the bearings may rise very fast.  Using a flow switch prevents permanent damage to the pump’s bearings that will require an overhaul of the pump before more damage occurs.

The FLT features a wide set-point range, beginning from 0.003 to 0.9 MPS in water-based liquids.  It is hydrostatically proof pressure tested to 240 bar at 21°C .De-rated with temperature, the maximum operation service recommended is 162 bar at 260°C.  Higher ratings are available with special construction and test certification.  Agency approvals include FM, ATEX, CSA, CRN and CE.