Gradient ∆p-v characteristic curve

A factor can be set on the pump to optimise the Δp-v control characteristic.

The additional function “Slope of ∆p-v characteristic curve” can only be used for the differential pressure control Δp‑v.
The slope of the ∆p‑v characteristic curve is set via the Context button . The factor 50 % (½ H_set) is pre-set at the factory.

NOTICE

In some installations with special pipe network characteristics, there may be inadequate or excessive supply. The factor reduces (< 50 %) or increases (> 50 %) the Δp-v delivery head at Q=0 m³/h.

• Factor < 50 %: ∆p‑v characteristic curve becomes steeper.
• Factor > 50 %: ∆p‑v characteristic curve becomes flatter.
• Factor 100 % is equal to an Δp-c control.

The excessive or inadequate supply can be compensated by adjusting the factor.

• In case of inadequate supply in the partial load range, the value must be increased.
• In case of excessive supply in the partial load range, the value can be reduced. More energy can be saved and flow noises are reduced.

NOTICE

The additional function “Slope of ∆p-v characteristic curve” can save energy and reduce flow noise.