Meaning
Metrological verification procedures ensure that environmental test chambers maintain accurate and uniform temperature levels during long-term material testing. The thermal aging chamber calibration defines the official process of testing, adjusting, and certifying that laboratory equipment operates within specified tolerances. Under the Metrology Law of the People’s Republic of China, this procedure must be conducted by a certified third-party testing agency.
It guarantees that the resulting aging data is legally valid for product safety certifications.
Regulatory Supervision
The State Administration for Market Regulation requires all accredited laboratories in China to maintain valid calibration records for their testing equipment. Conducting a thermal aging chamber calibration is necessary to retain laboratory accreditation under the China National Accreditation Service for Conformity Assessment rules. During annual audits, state inspectors review the calibration certificates to ensure that test data for products like automotive cells are reliable.
Laboratories with expired calibrations face the suspension of their testing licenses.
Compliance Standard
Contracts for battery cell supply often mandate that all durability data be generated using certified and calibrated equipment. The thermal aging chamber calibration provides the legal assurance that the supplier’s test reports are accurate and legally binding. If a manufacturer’s test chambers are uncalibrated, the buyer has the legal right to reject the testing data and demand that tests be repeated at a certified facility.
These requirements prevent disputes over the validity of test results during warranty reviews.
Factory Routine
Technicians insert multi-point temperature sensors inside the chamber and record the temperature drift during a full test cycle. Calibration logs are then uploaded to the internal laboratory information system.
