Which type of level gauge works on the principle of hydrostatic pressure?
A. Sight glass level gauge
B. Float level gauge
C. Differential pressure level gauge
D. Ultrasonic level gauge
Answer:C
Which type of level gauge works on the principle of hydrostatic pressure?
A. Sight glass level gauge B. Float level gauge C. Differential pressure level gauge D. Ultrasonic level gauge
Explanation: Differential pressure level gauges work on the principle of hydrostatic pressure. They measure the difference in pressure between two points in a liquid column and use this measurement to determine the level of the liquid.