working principle of pressure switch pdf

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The micro-switch is used to make or break an electrical circuit when the pressure switch operates. The micro-switch in the sectional view is a single-pole double-throw (S.P.D.T.) switch. This switch is made up of one normally close contact (NC) and one normally open contact(NO).

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Static Pressure. Pressure can be defined as force per unit area that a fluid exerts on its surroundings. The basic physics of static Pressure (P), is calculated as force (F) divided by area (A). P=F/A. The Force can be generated by liquids, gases, vapours or solid bodies. The most commonly used pressure units are; Pa - [Pascal] in 1 Pa = 1 (N

The micro-switch is used to make or break an electrical circuit when the pressure switch operates. The micro-switch in the sectional view is a single-pole double-throw (S.P.D.T.)

Mar 17,  · A pressure switch is a passive device since the presence or absence of pressure is all that is necessary for it to function. The pressure on the diaphragm compresses a calibrated spring. When the spring tension reaches or exceeds the set point, it will move the contacts from open to closed in a NO switch or closed to open in an NC switch.

The working principle and characteristic of pressure switch. The pressure switch is a simple pressure control device, when the measured pressure reaches the rated value, the pressure

May 22,  · (H) Inlet pressure. A modern-day pressure switch primarily contains a pressure sensor and a switch contact. Whenever the pressure level is reached, the switch contact

This water content in the air is a . Working principle of a pressure sensor An electronic pressure sensor relies on a physical reaction to applied pressure, and then measuring the

linkage. Each pressure sensing element of the Dual Hi-Lo Static “O” Ring Pressure Switch is a force-balanced, piston-actuated assembly sealed by a flexible diaphragm and an o-ring that is static. The only wetted parts are the single pressure port, the two diaphragms and the two o-rings. (See asterisks * in the illustration above.)

The principle is rough as follows: the mechanical signal of the pressure of water pressure is converted into a current (4-20 mA), and the electronic signal pressure has a linear relationship, with the magnitude of the voltage or current, which is generally proportional.