This system typically uses a Partlow controlled variable frequency drive (also called an 'AC Drive' or 'Freq Drive') to proportionally control the speed wood chips are fed into a wood waste boiler. This system can feed fuel into gasification and conventional boiler systems.

The sensor on these systems are typically a pressure sensor monitoring the boiler steam pressure. The feedback from the boiler pressure allows the Partlow 1160 to gauge the effect the speed of the fuel feed is having.

Boiler auger control is typically an aftermarket upgrade to an existing boiler control where the OEM auger feed is inadequate for the complexity of managing the changing nature of the sawdust feed (differing moisture contents, species, etc etc).

This system uses a Partlow controlled variable frequency drive to run a centrifugal pump proportionally. It uses an ultrasonic level sensor to determine how much water is in the initial holding tank. As the water level increases and decreases with usage, the controller alters the pump speed to maintain a steady water level. Suitable for any application where a constant speed pump is not practical, or to save wear and tear from constant on/off operation.