Digital Load Monitors

Monitor the load on your pumps with a Digital Load Monitor – a cost-effective solution that protects against dry running, end-of-curve operation and closed valve operation.

This intelligent control unit ensures pumps and motors run at optimal levels by providing real power measurement for 3-phase AC motors, displayed as a percentage of a selected power range.

Key Features

Programmable maximum and minimum limits
Start and reaction timer
Display shows kW as percentage
Internal current converter up to 8A AC
External current converter for applications above 8A
Programmable hysteresis band 2-50%
Built-in peak detection
Compatible with variable frequency drives and non-sine-shaped loads

Control Functions:

Two independent programmable trip functions activate a single alarm relay which can be used to control the motor being monitored:

Low power alarm – e.g. to stop a pump in event of dry running
High power alarm – e.g. to stop a feeder when blocked

Why Use a Digital Load Monitor?

As pump flows change due to demand, tank levels, blocked filters or dry running, power requirements rise or fall accordingly.

True power monitoring sets upper and lower trip points to ensure pumps never run dry or operate at poor duty points. The instant reaction to variation in duty means adverse conditions are detected before mechanical damage occurs.

Consistent sensitivity across the complete motor load range makes the digital load monitor ideal for low trip applications where amp meters are ineffective.