NXT Conversion Kit for existing legacy DM Checkweighers


The NXT Conversion Kit converts the obsolete existing DM weight controller to the current NXT style weight controller used on Stonepak Checkweighers. The NXT Conversion Kit is easily adjusted for bag weight range changes, calibration, and printer capabilities.

Current Design
Checkweighers that have existing obsolete “DM” weight controllers.

Upgraded Design
The NXT weight controller is the current state of the art weight controller used in Stonepak Checkweighers. The troubleshooting method is similar to that of PLC based systems and familiar to maintenance personnel. The weight controller also provides a user friendly interface that has many features.


  • Uses 24VDC control voltage for valves and I/O
  • Fully compatible with existing Stonepak conveyor bag packaging line
  • Directly replaces obsolete “DM” controller
  • Available for II-G-1/2 hazardous environments
  • Available with RS232 or Ethernet output comms.
  • Uses 5 zone stacklight to indicate bag status detected