Municipal Pump Station Liquid Level Sensor


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chemical-feed

When the City of Jefferson, WI needed a reliable level measurement solution for their sewer pump lift stations, they turned to Flowline. Lift stations are collection and transfer systems that move sewer and storm water from their point of origin to treatment, reclamation or disposal. Constructed of concrete or fiberglass, these below grade sumps are difficult applications, often filled with debris, foam, chemicals, sludge, condensation and equipment like submersible pumps and apparatus. Pressure, capacitance and float level sensors typically fail due to prolonged contact with the media or damage caused by process agitation. While ultrasonic level sensors are non-contact, they too can fail if the process generates surface foam. In this particular sewer pump lift station, foam was an ongoing problem. For this reason, Flowline recommended the use of pulse radar, which is unaffected by foaming process conditions, and the reliability problem was solved. Here, an EchoPulse pulse radar level transmitter is bracket mounted to the top wall of the lift station. The IP68 sensor was easily configured by its push button display module and the 4-20 mA signal is connected to their SCADA.