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About Instrumentation Blog
Its a blog for Instrumentation Engineering Students which will provide sources for their reference and studies.
Instrumentation For Flow Measurements
2016-10-11 15:53
Flowrate measurements are important in control of chemical processes. Having measured flowrates of gases, liquids or vapours it is possible to evaluate mass balance of the process. Flowrate… Read More
Float Actuated Devices : Level
2016-09-16 22:43
Float actuated devices measure liquid level using a float, which lies on the surface of the liquid and changes its position as the liquid level varies. Fig. 5.1 presents a schematic view of… Read More
Displacer (buoyancy) Devices : Level
2016-09-16 22:35
This method is based on the application of the Archimedes' principle: every body immersed in the liquid or gas is exposed to the action of a buoyant force (sometimes called as the Archimedes… Read More
Liquid Head Pressure Devices : Level
2016-09-16 22:28
The principle of this method is based on the measurement a hydrostatic pressure, caused by a liquid head, proportional to the level of liquid. There are several modifications of this method… Read More
Capacitance Devices : Level
2016-09-16 22:22
Due to the difference in the dielectric constants of air and liquids, it is possible to measure level of liquids in tanks by measuring the change in the capacitance (measured between two coa… Read More
Conductance Devices : Level
2016-09-16 22:13
These instruments are used when there is a necessity of liquid control at one specific point or between maximum and minimum values. Their principle is based on the measurements of electrolyt… Read More
Ultrasonic Devices : Level
2016-09-16 22:10
The operational principle of these devices is based on the phenomenon of reflection of ultrasound waves from the phase boundary separating liquid and gas. In different media the speed of sou… Read More
Nucleonic Devices : Level
2016-09-16 22:07
The phenomenon of reducing the intensity of gamma radiation when passing through liquids or solids is used in nucleonic devices for measurement of level of liquids and solids. Fig. 5.16 pres… Read More
2013-12-21 13:40
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.)… Read More

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