|When a Vermont paper company needed reliable level measurement of the sumps that protect their paper machines, they turned to Flowline. Each wet process machine continuously splashes foamy water and paper particulates into two adjacent sumps, and the operators had ongoing problems with level sensors that resulted in spills. Their ultrasonic sensors failed due to foam and float sensors failed due to material build-up. For this reason, Flowline suggested the use of our guided wave liquid level sensors that are unaffected by foam or material build-up. The guided wave sensor provides reliable level data to the PLC, which in turn, monitors the sump levels and actuates the transfer pumps. Flowline is reliable level measurement.