Instrumentation for level measurements

An accurate level measurement is crucial for the evaluation of the quantity of materials, phase boundaries, etc. in storage and processing vessels (tanks, wells, reservoirs, columns, etc.). This apparatus may operate under high pressure, under vacuum or at atmospheric pressure at various temperatures. Substances may be as follows: liquids, vapours, gases, solids and their combination. These substances may be corrosive and aggressive. All the above mentioned creates difficulties for level measurement in industrial environment.  In the upcoming posts several widely used instruments will be explained :


 1) Float actuated devices
2) Displacer (buoyancy) devices
3) Liquid head pressure devices
4) Capacitance devices
5) Conductance devices
6) Ultrasonic devices
7) Nucleonic devices

Article Source:: Dr. Alexander Badalyan, University of South Australia