Instrumentation Switches - Instrumentation Tools

Normally-open and Normally-closed Switch Contacts

S Bharadwaj ReddyDecember 17, 2018March 21, 2019

Perhaps the most confusing aspect of discrete sensors is the definition of a sensor’s normal status. Electrical switch contacts are typically classified as either normally-open or normally-closed, referring to the open...

PLC Example with Switches

S Bharadwaj ReddyDecember 14, 2018November 19, 2019

For example, the LED in this circuit will turn on if the liquid level rises above 14 inches and the pressure falls below 22 PSI and either the flow is...

Flow Switch : What is it ?

S Bharadwaj ReddyNovember 6, 2018June 20, 2019

Flow Switch is a mechanical switch that is switched on or off in response to the flow or non-flow of a fluid such as air or water. The switch typically operates...

What is a Limit Switch ?

S Bharadwaj ReddyNovember 3, 2018November 3, 2018

Limit Switch is a switch operated by the motion of a machine part or presence of an object. They are used for control of a machine, as safety interlocks, or to...

What is a Inductive Proximity Switch ?

S Bharadwaj ReddyOctober 31, 2018November 1, 2018

Inductive Proximity Switch is a device which causes a switching action without physical contact. Inductive Proximity Switches respond to targets that come within the active range of their generated sensing...

Belt Sway Switch Working Principle

S Bharadwaj ReddyOctober 29, 2018May 27, 2019

The belt sway switch allows smooth running of the conveyor and protects it from damages by over swaying which can occur due to uneven loading of material, worn out idler...

Pull Cord Switch Working Principle

S Bharadwaj ReddyOctober 29, 2018December 14, 2018

Pull Cord Switch is an emergency switch to stop the belt conveyor instantly when an accident happens. Since the Pull Cord Switch is so designed that it should be installed...

Safety Switches for Controlling Conveyor Operations

S Bharadwaj ReddySeptember 8, 2018January 16, 2020

In the process to produce cement, power, steel, aluminum etc. , raw material and other inputs have to be transferred from mines or receiving stations to the point of processing....

Electromagnetic and Conductive limit switches Principle

S Bharadwaj ReddySeptember 23, 2017

Electromagnetic Limit Switch The electromagnetic wave measuring process allows for universal use even when the media changes. The electromagnetic wave penetrates the medium and, depending on the respective relative permittivity,...

What is Contact bounce ?

S Bharadwaj ReddyMay 24, 2017September 9, 2018

When a switch is actuated and contacts touch one another under the force of actuation, they are supposed to establish continuity in a single, crisp moment. Unfortunately, though, switches do...

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Category: Switches