Vortex flowmeter is a differential pressure measuring flowmeter which can measure both liquid and gas flow measurement. Vortexes are used for continuous flow measurement. Principle: When flow stream passes a stationary object or a bluff body and causes the formation of swirls, called vortices, downstream from the body. Each vortex will form, then detach from …
Introduction There are different kinds of pressure sensing elements that are used in the industries.we are going to discuss about such pressure detectors in this session. Bourdon Tubes Bourdon tubes are circular-shaped tubes with oval cross sections. The pressure of the medium acts on the inside of the tube. The outward pressure on the oval cross …
Introduction A three-way manifold valve is a device that is used to ensure that the capsule will not be over-ranged. It also allows isolation of the transmitter from the process loop. It consists of two block valves – high pressure and low pressure block valve – and an equalizing valve. Figure shows a three valve …
Introduction A simple pressure gauge can be used for level measurement if its scale is properly calibrated for the actual level, inside the tank or vessel We are considering open tank Case1 Consider for instance the tank is 1000mm height & is filled with water of specific gravity 1.00 as shown in fig below …
Thermocouple Gauge Thermocouple gauge is a device used to measure low vacuum.Working of a Thermocouple GaugeIn Thermocouple Gauge a filament is heated by passing constant current through it.When gas molecule interact with filament heat is carried away.Therefor the temperature is directly depended on the pressure in the chamber.The higher the pressure the more molecule interact with …
Pirani GaugePirani gauge is a device used to measure low vacuum in a pressure range from 0.5 Torr to 10−4 Torr. Working Principle and Construction of Pirani gauge Pirani gauge consist of two tungsten filaments,a power source and a volt meter or ammeter.One of the filaments is placed to gauge tube and is exposed to the environment where the pressure …
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What is a Pressure Switch ? A pressure switch turns an electric circuit on or off at a preset pressure.This pressure is referred to as the setpoint of the switch. A bourdon tube,a diaphragm, or a bellows can actuate the switch. How Pressure Switch Works? The contacts in a pressure switch may be normally open …
What is a Pressure Transmitter ? A pressure transmitter is a transducer that converts pressure into an electrical signal. It outputs both analog and digital signals corresponding to the pressure. A pressure transmitter measure three phenomena : Differential Pressure,Gauge Pressure,Absolute Pressure. The most common and useful industrial pressure measuring instrument is the differential pressure transmitter. This instrument …
Working Principle Of Bourdon Gauge If a tube having oval cross section is subjected to pressure its cross section tends to change from oval to circular. Construction of a Bordon Gauge Bourdon tube gauges consist of a circular tube. One end of the tube is fixed while the other end is free to undergo elastic deformation under …
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Manometers Manometers are one of the oldest type of pressure measurement. Manometers can be used to measure gauge pressure,differential pressure and absolute pressure. Various types of Manometers 1.U tube Manometer 2.Well type or reservoir manometer 3.Inclined manometer 4.Float type manometer U tube Manometer. U tube is made of glass.The tube is filled with a fluid known …
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