When a California trucking company needed reliable level measurement of their wastewater tank, they turned to Flowline. The firm performs regular maintenance at their fleet service center. Every week, the bay floors are power washed into a sump which pumps the wastewater to a storage tank for bi-monthly offsite removal and treatment. The water contains residual fuel oil, DEF, coolant, grease and hazardous vapor. The operator wanted a non-contact level sensor and a remote display with alarms for placement in the service center. For these reasons, Flowline suggested our intrinsically safe ultrasonic sensor and indicator package with two configurable relay alarms. The ultrasonic sensor provides reliable level data to the indicator, which displays in percent full and alarms for truck pick up. Flowline is reliable level measurement.