Differentialtryck

Glossary Right Side Image

a pump with electronic pressure gauges at inlet and outlet ports

Other Versions

Total Dynamic Head; TDH; Î”P)

Classification

Definition

Skillnaden mellan tömningstrycket och inloppstrycket Beräkning: Differentialtrycket är en funktion av systemet och måste beräknas eller mätas. Mätningar kan göras vid mätportarna nära pumpens inlopps- och utloppsportar.

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.