Anticorrosive ultrasonic level transmitter with ABS housing and PTFE sensor, can be used for hydrochloric acid, no fuming sulfuric acid and other highly corrosive liquid level measurement.
link:http://www.gallopsensor.com/level-meter/ultrasonic-level-meter/anticorrosive-ultrasonic-level-transmitter.html
Anticorrosive Ultrasonic Level Transmitter With Low Price