Foaming Wastewater Liquid Level Sensor


chemical-feed

chemical-feed

When Bio-Pappel, a New Mexico paper and packaging manufacturer needed a reliable level measurement solution for their foaming wastewater processes, they turned to Flowline. At the time, Bio-Pappel had tried just about every level sensing technology with disappointing results. Contact sensors such as pressure and floats, were affected by the material build-up associated with glue, resin and paper particulate, or corrosion attack from bleach. The thick surface foam also affected non-contact ultrasonic sensors, and a stand-pipe installation was not possible due to the material build-up. For these reasons, Flowline suggested the use of non-contact pulse radar which is unaffected by most process variables including surface foam. Here, an EchoPulse pulse radar level transmitter is bracket mounted to the sidewall of their foaming wastewater basin. The rugged IP68 sensor was easily configured by its push button display module (not shown) and the 4-20 mA signal is connected to their PLC.