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Controlling Duct Pressure

From Kele Inc.
 

 

The UCM-420A is one of the most versatile products sold by Kele . Although this product is capable of performing many control functions, it was primarily designed as a Setpoint Controller. Since the introduction of the UCM-420A, response from customers indicates that pressure control is a popular application for this product. This article will discuss a typical application - controlling static pressure in a duct by varying fan speed with a Variable Frequency Drive (VFD). This system could also be used to control the pressure with inlet vanes, discharge dampers, bypass dampers, etc. The same principles involved in this application could be used in other control applications, such as controlling water pressure with variable speed pumping, VAV zone control or humidifier control.


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