In the design of a liquid ammonia spherical tank, the externally attached ultrasonic level gauge also has a good application. The liquid ammonia in the storage tank is a colorless, pungent odor toxic liquid, which is corrosive to a certain extent. Because the density of liquid ammonia is greatly affected by temperature, the differential pressure liquid level gauge is not applicable in this project. Finally, the External Tank Level Indicator is selected for detection. Extended Reading: How to Measure Volume of Liquid