What is principle of ultrasonic level transmitter?

Related questions

1. Did Bell buy MTS?
2. What is Skill Test in SSC MTS?
3. How does a radar level transmitter work?
4. What is MTS in post office?
5. What are smart materials used for?
6. Is a potentiometer a sensor?
7. Who bought MTS?
8. How do position sensors work?
9. What is the difference between transmitter and transducer?
10. Why do potentiometers have 3 terminals?

Tags

1. #frequency
2. #level
3. #pulse
4. #sound
5. #listens
6. #about
7. #emits
8. #sensors
9. #using
10. #generally
11. #speed
12. #flight
13. #principle
14. #range
15. #transmitted
16. #usually
17. #ultrasonic
18. #sensor