Weight Checking Machines

The machine is commonly called a check weigher. It's an automated inline system that weighs products as they move along a conveyor, verifying they meet target weight specifications and automatically rejecting underweight or overweight items using methods like air blowing, arm-reject, or pneumatic pushers.

Common types include standalone check weighers, combined check weigher/metal detector systems, dropped metal detectors for powders and granules, and multi-level sorting weighers for products like seafood. Models differ by weighing range (5g to 30,000g), belt width, speed, and reject mechanism to suit specific product types and production volumes.

Yes. Busch Machinery offers combined check weigher and metal detector systems that perform weight verification and contamination screening in a single pass. These systems detect ferrous contaminants as small as 0.8mm and stainless steel as small as 1.5mm while simultaneously confirming package weight, streamlining quality control into one compact unit.

Weighing ranges span from 5g up to 30,000g (30kg) depending on the model, accommodating everything from small pharmaceutical packets to bulk bags of food or chemical products. Belt widths range from 100mm to 500mm, and conveyor speeds range from 30 to 150 pieces per minute to match different production line requirements.

Weight checking machines are used across food processing, pharmaceutical manufacturing, chemical processing, seafood and aquatic products, electronics, beverages, and daily chemical industries. Any operation requiring accurate net weight compliance, contamination screening, or quality assurance for packaged goods benefits from inline check weighing and metal detection systems.

Check weighers continuously monitor package weights in real time, immediately flagging and rejecting overweight products that would otherwise result in excess material usage. By tightening the weight distribution around the target value, manufacturers can reduce average fill weights while staying compliant, directly cutting material costs over high-volume production runs.