When a North American well service provider needed reliable level measurement of their acid bulk storage tanks, they turned to Flowline. The company distributes hydrochloric acid to many oil and gas well sites from this location. The fracture acidizing process improves well productivity by dissolving material in the productive formation that would otherwise restrict fluid flow. HCL is highly corrosive and vaporous, and the operators had reliability problems with ultrasonic level sensors due to vapor and the resulting signal attenuation. For this reason, Flowline suggested the use of our pulse radar sensors, that are unaffected by vapor, and include a rugged PTFE antenna shield. The pulse radar sensor provides continuous level data to the PLC, which in turn, monitors the tank, and alarms for replenishment. To eliminate the possibility of delivery driver overfill, a high-level safety shut off switch was installed. Flowline is reliable level measurement.