Calibration is the process of comparing a measuring instrument with a traceable reference standard to verify if the measurements made are within the specified accuracy and tolerances.
It is a critical step to ensure reliability, metrological traceability, and compliance with quality standards such as ISO 9001, ISO/IEC 17025, and IATF 16949.
Without periodic calibration, test data may be incorrect — and this compromises the entire product validation and release process.
🎯 Why calibrate?
- Ensure that the measured values are reliable and reproducible
- Avoid false failures or improper approval of defective products
- Meet requirements for internal audits and external certifications
- Detect instrument drift and act before it impacts production
🧪 Types of instruments requiring calibration
| Instrument | Typical calibration frequency |
|---|---|
| Multimeters, oscilloscopes, power supplies | 6 to 12 months |
| Cameras and vision systems | 12 months (with optical validation) |
| Pressure, temperature sensors | 6 months or as per environment |
| Programmable power supplies and loads | 12 months |
| Current meters, clamps | 6 months |
📊 Calibration documentation
- Calibration certificate with serial number, date, traceability, and measured error
- Traceability to accredited laboratories (e.g., RBC/INMETRO, COFRAC, NIST)
- Indication of measurement uncertainty and pass/fail criteria
- Automatic registration in the quality system or MES database
🔧 How AJOLLY Testing supports industrial calibration
AJOLLY Testing integrates calibration processes into the routine of testing, validation, and preventive maintenance, ensuring confidence and compliance in all measurements.
🛠️ Technical management of instruments
- Registration and tracking by asset number, station, and validity
- Automatic calibration expiration alert integrated into the test system
- History of detected errors and corrective actions taken
📈 Verification and self-check
- Automatic sequences of system self-verification
- Comparison of values with internal reference standards
- Statistical deviation alert based on PPK/CPK trends
🧾 Document support
- Organization and storage of certificates in digital format
- Inclusion in validation reports, functional tests, and audits
- Compliance with requirements for automotive, medical, aerospace, and cosmetic industries
With AJOLLY Testing, calibration is not just a bureaucratic paper — it is a technical guarantee of confidence in your data, decisions, and product releases.