External calibration
External calibration uses known test weights. It is flexible, widely used and lets technicians check performance across the weighing range, including repeatability and corner loading.
Internal calibration
Internal calibration uses a built-in reference system, common on some laboratory balances. It is convenient for routine checks and can help when temperature changes are frequent.
Which approach to choose
Use external calibration where audits, trade requirements or full system checks matter. Internal calibration is useful for convenience, but many quality systems still require periodic external verification.
Quick checklist
- Know whether your scale supports internal calibration.
- Use suitable certified weights.
- Keep calibration records.
- Check after relocation.
- Match frequency to risk.
Frequently asked questions
Is internal calibration enough?
Sometimes for routine checks, but audited systems often still need external verification.
How often should calibration happen?
It depends on use, risk and quality requirements.
Can any weight be used?
No. Use suitable test weights with known accuracy.
Need help choosing the right weighing setup?
Richter Scale can help match the scale, load cell, indicator, calibration plan or software integration to your application.
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