Managing anhydrous ammonia tanks comes with high risk for both personnel health and process safety reasons, and care must be taken to monitor and control its level to avoid overfills and spills. Ammonia can be a very difficult compound to measure reliably due to its tendency to change between its liquid and vapor states. Heavy vapors can attenuate the signal from non-contacting radar and limit its overall range capability, therefore the Rosemount 5300 Guided Wave Radar Level Transmitter is the recommended choice for tank level control and overfill prevention, ensuring measurement reliability and process safety.