When a Canadian manufacturer of printed circuit boards needed reliable level measurement of their neutralization tanks, they turned to Flowline. The firm uses several etchants like copper chloride to dissolve the unwanted trace material from PCB’s. Each process line generates a corrosive waste stream that flows into small neutralization tanks. There the operator said that past pressure level sensors had failed due to corrosion, and ultrasonic sensors were erratic due to limited measurement space with pipes, sensors and inflow streams. For these reasons, Flowline suggested our ultrasonic sensors installed in a standpipe to separate the measurement signal from the various obstacles. The ultrasonic sensors provide reliable level data to the PLC which controls the process. Flowline is reliable level measurement.