Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for optical fibre amplifiers (IEC 61291-5-2:2017/COR1:2019); German version EN 61291-5-2:2017/AC:2019-06
Edition 2019-10

Opticial amplifiers - Part 6-1: Interfaces - Command set (IEC 61291-6-1:2008); German version EN 61291-6-1:2008
Edition 2009-03

Marking of electrical equipment with ratings related to electrical supply - Safety requirements (IEC 61293:2019); German version EN IEC 61293:2020
Edition 2021-03

Industrial-process control systems - Classification of adaptive controllers for the purpose of evaluation (IEC 61297:1995); German version EN 61297:1995
Edition 1996-07

Process measurement and control devices - General methods and procedures for evaluating performance - Part 1: General considerations (IEC 65B/1269/CDV:2024); German and English version prEN IEC 61298-1:2024
Edition 2025-05

Process measurement and control devices - General methods and procedures for evaluating performance - Part 1: General considerations (IEC 61298-1:2008); German version EN 61298-1:2008
Edition 2009-08

Process measurement and control devices - General methods and procedures for evaluating performance - Part 2: Tests under reference conditions (IEC 65B/1270/CDV:2024); German and English version prEN IEC 61298-2:2024
Edition 2025-05

Process measurement and control devices - General methods and procedures for evaluating performance - Part 2: Tests under reference conditions (IEC 61298-2:2008); German version EN 61298-2:2008
Edition 2009-08

Process measurement and control devices - General methods and procedures for evaluating performance - Part 3: Tests for the effects of influence quantities (IEC 65B/1271/CDV:2024); German and English version prEN IEC 61298-3:2024
Edition 2025-05

Process measurement and control devices - General methods and procedures for evaluating performance - Part 3: Tests for the effects of influence quantities (IEC 61298-3:2008); German version EN 61298-3:2008
Edition 2009-08