List the primary elements and sensors associated with level.

What will be an ideal response?


Examples of level elements and instruments include:
• Displacer— buoyancy devices
• Sight glass—transparent tube mounted on the side of a tank.
• Float and tape—float rests on the surface of the fluid. Tape moves up and down depending on the level.
• Conductivity probes—high and low level alarms. Use electricity to complete lower leg circuit. If liquid reaches the higher leg, the circuit is broken. This type of system is designed to keep the level between the high and low conductivity probes. Typically used on non-flammable material.
• Capacitance probes—radiation devices, load cells.
• D/P cell (Transmitter)—converts pressure difference to a level indication. Measures hydrostatic pressure difference between two points on a pressurized vessel.
• Continuous level detector gauge—pressure sensitive. Measures hydrostatic pressure in open vessels.
• Bubbler system—forces air through a tube that is positioned in the liquid. The liquid’s resistance to flow registers on a pressure sensitive level gauge. Measures hydrostatic pressure in open vessels.

Trades & Technology

You might also like to view...

Alexander Hamilton believed that a limited national debt

A. would do great harm to the nation's economy. B. might lead to military weakness. C. could persuade individuals and nations not to lend money to the United States. D. was beneficial, because people to whom the government owed money would work hard to make the nation a success. E. could help his economic plans but not his political plans.

Trades & Technology

Gear ratios can be used to ________.

A) Reverse direction B) Increase speed C) Increase torque D) All of the above

Trades & Technology

Which of the following animal by-products is the chief constituent of connective tissue?

a. fat c. collagen b. blood d. tankage

Trades & Technology

Watery blisters and thick white skin between the toes are signs of:

What will be an ideal response?

Trades & Technology