Minor & Major Weighing Systems
Minor and major ingredients drive cost, texture, and performance. Sterling Systems & Controls engineers minor & major weighing systems that enforce tolerances, verify ingredients and lots, and hand off cleanly to batching or conveying — so results are repeatable shift-to-shift, not just “close enough.”
What Do “Minor” and “Major” Mean?
- Major ingredients: higher throughputs from silos, bulk bags, totes, or tanks. Strategy: fast fill + trim for accuracy without sacrificing rate.
- Minor ingredients: lower flow, finer resolution, tighter tolerances. Strategy: precision feed control with protected weighments.
Both can feed gain-in-weight, loss-in-weight, or weigh-in-place architectures and hand off to mixers, extruders, dryers, or packaging.
System Architecture (Built to the Material & the Mission)
- Weighing modules: weigh hoppers, platforms, or in-place vessels sized for accuracy and rate.
- Feed devices: auger, vibratory, belt, slide-gate/valve, or pump (for liquids) — chosen for the material’s flow behavior.
- Discharge & isolation: slide gates, rotary valves, airlocks, or diverters to protect weighments and ensure clean transfer.
- Controls & HMI: PLC/HMI with recipe logic, alarm handling, and guided operator prompts.
- Data backbone: SQL database (and optional WebCentral) for batch/lot records, reporting, and audits.
Weighing Modes Supported
- Gain-in-Weight (GIW): weigh product as it fills the vessel.
- Loss-in-Weight (LIW): control feed rate by monitoring the feeder’s mass loss.
- Weigh-in-Place: measure in the process location to remove handling steps.
- Check-Weigh/Verification: confirm targets before release or next step.
Accuracy & Throughput Strategies
- Fast-fill & dribble/trim profiles to hit tight targets.
- Tolerance enforcement per ingredient (over/under windows).
- Dynamic filtering & motion detection to stabilize readings.
- Interlocks with conveying so weighments aren’t disturbed.
Integration That Matters (Not Just a Scale)
- Automatic/semi-automatic batching (micro, minor, major, kitchen, hand-prompt).
- Pneumatic or mechanical conveying interlocks and timing.
- Downstream equipment (mixers, extruders, dryers, packaging) for coordinated sequences.
- Plant systems: PLC/SCADA, MES/ERP, and network reporting.
Compliance, Hygiene & Traceability
- Who/what/when/within-tolerance recorded for each weighment.
- Lot verification (entry or barcode/RFID).
- Sanitary builds and cleanable surfaces where required.
- Audit-ready records for GFSI, FSMA, GMP, and customer audits.
Typical Options & Components
- Scales & weigh hoppers • Ingredient bins & refill systems • Bulk bag/tote/silo interfaces
- Feeders (auger/vibratory/belt/valve) • Airlocks/diverters • Dust containment interfaces
- PLC/HMI recipe management • Barcode/RFID lot entry • Label/report printing
- SQL database reporting • Network connectivity & backups
Where It Fits
Food & baking • Pet food & feed • Chemicals & additives • Plastics/compounding • Nutraceuticals • Other industrial powders
Planning to standardize minor/major additions and close your traceability gap? Request a quick application review — we’ll specify the weighing architecture that matches your materials, rates, and compliance needs.