# How To Read The Pump And System Characteristic Curve

Theoretical explanation of the pump characteristics curve, you may read the previous article. The pump characteristic curve is influenced by the size and design of the pump, the size of the impeller diameter, as well as the magnitude of the operating rotation. The characteristics of a pump are shown through a head vs flow pump. On this curve also included some information about the associated pump such as BHP, NPSHR, hydraulic efficiency point, and pump power characteristics.

Now lets talk about the system characteristic curve. The system characteristic curve is used to determine which centrifugal pumps will be installed on the system. A fluid flow system can generally be described in a characteristic curve called the system characteristic curve.

Like the pump characteristics curve, the system characteristic curve is also the head on vertical axis and the flow at horizontal axis. The head of the system curve is a function of the static head of the system, and its losses. This can be expressed through the following equation:

h = dh + hl

Where: