The core idea of this page: a checkweigher catches under/overfill by weighing every pack; a metal detector catches metal contamination. They catch different failures — install the one that matches your risk, or both.
Checkweighing
Weighs every pack in motion and rejects outside a target band. Catches underfill (legal risk) and overfill (giveaway). A Wipotec HC-A reaches 650 pc/min.
Metal detection
Finds ferrous and non-ferrous metal by electromagnetic field. Catches contamination, not weight error.
Decision rule
- Sold by weight / fill accuracy → checkweigher.
- Metal contamination risk → metal detector.
- Both → install both.
Source: Wipotec-OCS
HC-A "Output calibrated for up to 650 pc/min".
Frequently asked questions
Can one machine do both?
Some integrated checkweigher-metal-detector combos exist, but most lines install two separate machines.
Last verified: September 10, 2026.