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QAL 1

Prior or during the AMS purchasing period - Equipment Manufacturers Evaluation of the suitable measurement procedure, with a required measurement uncertainty, in accordance to EN ISO 14956.

Calibration Gas Mixture Requirements for QAL1: Non ISO17025 required, however calibration gas standards must be stable and have an uncertainty of +/-2%

New CEN standard under development, prEN15267-3 – Certification of AMS-Part 3

QAL 2

Validation of the AMS - Test Houses At least every 5 years for each AMS on site, or after a major change in plant operation or failure/repair of the AMS, conducted by Test Houses accredited to the ISO EN/IEC 17025 MCerts performance standard.

Calibration Gas Mixture Requirements for QAL2: ISO17025 certified calibration gases.

QAL 3

Maintain and demonstrate the quality of the measurement - Process Ops Weekly checking that the zero and span characteristics are consistent with those determined in the QAL1

Calibration Gas Mixture Requirements for QAL3: Non ISO17025 required, however calibration gas standards must be stable and have an uncertainty +/-2%

AST

(Annual Surveillance Test) Performance of the AMS is still valid and the calibration function remains as previously determined - Test Houses Every year on the anniversary of the first QAL2 for each AMS on site, conducted by Test Houses accredited to the ISO EN/IEC 17025 MCerts performance standard.

Calibration Gas Mixture Requirements for AST: ISO17025 certified calibration gases

 

Accredited Gas Mixtures ...