Presión diferencial

Glossary Right Side Image

a pump with electronic pressure gauges at inlet and outlet ports

Other Versions

Altura dinámica total; TDH)

Classification

Definition

La diferencia entre la presión de descarga y la presión de entrada. Cálculo: la presión diferencial es una función del sistema y debe calcularse o medirse. Las medidas se pueden realizar en los puertos de indicador cercanos a los puertos de entrada y salida de la bomba.

What is differential pressure?

Differential pressure, otherwise known as total dynamic head, is the difference between the discharge pressure and the inlet pressure.

How do you calculate differential pressure?

Differential pressure is a function of the system and must be calculated or measured. Measurements can be made at the gauge ports near the inlet and outlet ports of the pump.

Differential Pressure = (Outlet Pressure) – (Inlet Pressure)

Can differential pressure be negative?

Yes! For example, a pump is at the bottom of a very tall, very full tank and the pump has a very short discharge pipe. The head pressure acting on the pump's inlet side may be greater than the discharge pressure due to viscous line losses. In this scenario you could omit the pump and let gravity empty the tank but a pump can expedite this and allows you to control the rate of flow.