17 Questions
What is the principle behind the level measurement method based on hydrostatic pressure?
The height of the liquid head and the density of the liquid
What is a limitation of the level measurement method based on static head pressure?
It is affected by changes in liquid density
Which of the following is an advantage of the level measurement method based on static head pressure?
It has a wide range of measurement
What type of sensor is commonly used in level measurement methods based on electrical properties?
Capacitance sensor
What is the principle behind the level measurement method using displacer?
Buoyancy force
What is the limitation of the capacitive measure in level measurement?
The dielectric constant of the fluid must remain constant
Which type of level measurement is applicable for both conductive and nonconductive fluids?
Capacitive Measures
What is the principle of operation of the Float Rotating Paddle Switch?
A small synchronized motor keeps the paddle in motion at very low speed
What is the application of Load Cells in level measurement?
Measuring the stress in the sensing element
What is the advantage of Conductive Electric level measurement?
It can provide differential level control
Which type of level measurement is applicable for solid materials only?
Float Rotating Paddle Switch
What is a key consideration for radar mounting in level measurement?
The sound path should be perpendicular to the monitored surface
What is an advantage of ultrasonic level measurement?
It can measure the level without making physical contact with process material
What is a limitation of ultrasonic level measurement?
It is not applicable if the vapour space of the material is dusty or contains foam
What is an advantage of guided radar level measurement?
Changing vapour and foam has less effect than on ultrasonic type
What is a limitation of guided radar level measurement?
It is not applicable for low-dielectric materials
What type of level measurement is suitable for measuring the level of liquid interfaces?
Guided radar level measurement
This quiz covers different methods of level measurement, including pressure, position, and weight. It discusses various techniques such as differential pressure, radar, ultrasonic, and load cells.
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