Electronic manufacturers use acid in the etching of semiconductor wafers, PCB substrates and electronic parts. These wet processes generate substantial amounts of spent acid waste that must be collected, remediated and neutralized, before being released to the city sewer system. At this electronics manufacturer, acidic wastewater collects in PVC sumps. An EchoPod ultrasonic level transmitter is mounted in a stand-pipe in each sump. The stand-pipe separates the sensor from surface foam that may enter the sump and disrupt the acoustic signal. The non-contact sensor provides continuous level measurement data to the PLC, which in turn, actuates the pumps to periodically transfer the wastewater into treatment. The sensor’s internal relays also provide independent high and low level alarms. EchoPod is reliable electronic acid waste level measurement.