Mechanical Pressure transducers: In general, transducers are devices which converts one form of energy into another form, a pressure transducer converts pressure into any other measurable form of energy. A mechanical pressure transmitter converts the pressure into mechanical displacement in the system. Types of Pressure transducers: Bourdon tube Helix and spiral tubes Spring and bellows Diaphragm …
Pressure reducing valve is a type of pressure control valve. This type of valve is used to maintain constant reduced pressure in a pipeline where the flow is fluctuating. This type of valve (which is normally open) is used to maintain reduced pressures in specified locations of hydraulic systems. The high incoming pressure is reduced …
Introduction There are three pressure scales used for measuring pressure. The Absolute pressure scale The Gauge pressure scale The Vacuum pressure scale In the pressure gauges shown in Figure all pressure gauges show a reading of 20, but their values of pressure are all different. Gauge A Shows a pressure of 20 pounds per …
Introduction A controller is a device that senses differences between a desired condition and measured condition in a process. .The controller will reduce this difference with the help of final control elements in the process.If the final control element is control valve the controller will send signal to open or close the valve to reduce …
INTRODUCTION Protection against over pressure is one of the most important design tasks in the chemical, petrochemical, oil, and gas industries.pressure relief valves are such instruments that protect the plant form over pressure scenario The various causes of over pressure fall into two broad categories: fire conditions and process conditions. The purpose of over pressure …
Capacitance pressure transmitter is a pressure measurement device which convert applied pressure into a current signal. Capacitive type pressure transmitter is differential pressure type sensor. Principle: Capacitive pressure transmitter works under the principle of differential capacitance. Capacitive pressure measurement involves sensing the change in capacitance that results from the movement of a diaphragm. Generaly the capacitance …
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 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 …
