Taking Process Control and Efficiency to the Next Level

PPM’s Libra VF Mass Flow System employs a two-tier conveyor system that combines VF technology with load-cell scales, measuring product by both weight and volume. The Libra’s loss-in-weight feedback system provides continuous, real-time product load measurements, adjusting product speeds to ensure feed rates are consistent and precise. With achievable accuracy of +/- 1%, this proven loss-in-weight technology outperforms traditional weigh belts and weigh chutes.

The Libra’s small footprint, along with its nearly 100% vibration isolation efficiency, means you can mount it to a variety of existing sub-structures, and use it to meter/weigh, blend and feed conveyors, drum scales and more. The Libra has a durable, sanitary design, with no pulleys to break or accumulate debris, and no belts to maintain and clean, and it’s constructed using FDA-approved stainless steel contact surfaces. For production operations that demand the highest levels of consistency, accuracy and performance, look to the Libra for continuous mass flow measurements that outweigh the competition.

PPM Technologies - Libra large hopper, pedestal mounted

The VF Line: An Industry Standard

PPM’s VF range of conveyors continue to be the reliable and proven workhorses of the food industry, after more than 30 years. The versatile drive design allows a lineup of conveyors that suit a huge range of applications – from snack foods, nuts, baked goods, dried fruits and cereals to frozen and wet products.


PPM Technologies - Libra caster mounted


  • Durable, sanitary design
  • Responsive
  • Long life and low maintenance costs
  • Precise accuracy
  • Gravimetric and volumetric measuring
  • Small installation footprint


  • Product blending
  • Metering
  • Drum feeding
  • Weighing



PPM Technologies - solutions and applications for connfections - photo


PPM Technologies - solutions and applications for cereals - photo


PPM Technologies - solutions and applications for frozen foods - photo

Frozen Foods

PPM Technologies - solutions and applications for nuts - photo


PPM Technologies - solutions and applications for snack foods - photo

Snack Foods

PPM - section separator

PPM offers a variety of food processing solutions for a wide range of applications.

Related Electromagnetic Vibratory Products

PPM Technologies - VF Advance

VF Advance

PPM Technologies - VF Premier

VF Premier

PPM Technologies - mini VF

Mini VF

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