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The Fan is an apparatus with rotating blades that creates a current of air for cooling or ventilation. it is a powered machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner.
There are three main types of fans used for moving air, axial, centrifugal (also called radial) and cross flow (also called tangential). The American Society of Mechanical Engineers Performance Testing Code 11 (PTC) provides standard procedures for conducting and reporting tests on fans, including those of the centrifugal, axial, and mixed flows.
Differential Pressure Switches is installed across fans in order to identify actual fan running condition by the pressure difference so, Differential Pressure Switches positive tube must be installed after the fan or say positive side and negative tube to be installed before the fan or open to the environment or say negative side and pressure range selected as 100 pa for Differential Pressure Switches.
GE-923 Air Differential Pressure Transmitter
This GE-923 Air Differential Pressure transmitter is produced with mag...
Air Differential Pressure Switches for Exhaust Fans
GE-924 Adjustable Air Differential Pressure Switch for monitoring over...
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