Ultrasonic Level Meters are a non-contact level sensing technology that works similarly to radar or sonar. The piezoelectric transducer generates high frequency sound waves in the ultrasonic range.

As a technology-intensive production plant, thermal power plants are more prone to accidents. Statistics show that boiler problems account for more than 70% of the total accidents in power plants, whereas the leakage and blasting accidents caused by super-heater, re-heater, economizer, and water wall are the major problems that plague the safety production in power plants.