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Instrumentation : How It Works

Displacer Level Switch Working Principle

S Bharadwaj Reddy
Displacer controls offer alternative features to the float-operated control. The sensor is a weight (displacer), heavier than the liquid, that is suspended by a spring. When liquid contacts the displacer,...

Differential Pressure Switch Working Principle

S Bharadwaj Reddy
A Differential Pressure Switch, just like a regular pressure switch, is a simple electro-mechanical device that operates on the basic principles of levers and opposite forces. Mainly, they are used for...

Float Level Switch Working Principle

S Bharadwaj Reddy
Float Operated Level Switches Principle: All float operated liquid level controls operate on the basic buoyancy principle which states “the buoyancy force action on an object is equal to the...

Thermistor Working Principle

S Bharadwaj Reddy
Thermistors Thermistors are temperature sensitive semiconductors that exhibit a large change in resistance over a relatively small range of temperature. There are two main types of thermistors, positive temperature coefficient...

Resistance Temperature Detectors Working Principle

S Bharadwaj Reddy
Resistance Temperature Detectors (RTD) Working Principle Thermo-resistive Temperature Measuring Devices A change in temperature causes the electrical resistance of a material to change. The resistance change is measured to infer...

Thermocouple Working Principle

S Bharadwaj Reddy
THERMOCOUPLES A thermocouple is made up of two dissimilar metals, joined together at one end, that produce a voltage (expressed in millivolts) with a change in temperature. The junction of...

Mechanical Temperature Measuring Sensors

S Bharadwaj Reddy
Temperature can be measured via a diverse array of sensors. All of them infer temperature by sensing some change in a physical characteristic. There are four basic types of temperature...

Tilt Level Switch Working Principle

S Bharadwaj Reddy
Tilt Switches Monitor’s line of tilt bin level switches are economical, trouble-free point level controls available for detection of dry bulk materials. The units can be used as high level indicators...

Temperature Switch Working Principle

S Bharadwaj Reddy
Temperature is a measure of the average heat or thermal energy of the particles in a substance. Since it is an average measurement, it does not depend on the number...

In Line Flow Switch Working Principle Animation

S Bharadwaj Reddy
In Line Flow Switch are comprised of two main assemblies: the housing and the shuttle assembly. As liquid flow enters the flow switch, it passes through an orifice between the...

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