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eLibrary > BS EN 50271:2018 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen. Requirements and tests for apparatus using software and/or digital technologies >

BS EN 50271:2018 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen. Requirements and tests for apparatus using software and/or digital technologies, 2018

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BS EN 50271:2018 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen. Requirements and tests for apparatus using software and/or digital technologies, 2018

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1 Scope
2 Normative references
3 Terms and definitions
4 Design principles [Go to Page]
4.1 Basic requirements [Go to Page]
4.1.1 General
4.1.2 Analogue/digital interface
4.1.3 Numerical errors
4.1.4 Measuring operation
4.1.5 Special state indication [Go to Page]
4.1.5.1 General
4.1.5.2 Fixed and transportable apparatus
4.1.5.3 Portable apparatus
4.2 Displays [Go to Page]
4.2.1 General
4.2.2 Indication of messages
4.2.3 Indication of measured values
4.3 Software [Go to Page]
4.3.1 General
4.3.2 Re-used or commercial operating systems [Go to Page]
4.3.2.1 Requirements
4.3.2.2 Use of operating systems without validation of functional safety
4.3.3 Software requirements
4.3.4 Requirements for software documentation
4.3.5 Requirements for the software development process [Go to Page]
4.3.5.1 General
4.3.5.2 Specification of the requirements for the software
4.3.5.3 Software architecture
4.3.5.4 Software design
4.3.5.5 Coding
4.3.5.6 Software test
4.3.5.7 Hardware-software integration test
4.3.5.8 Validation
4.3.5.9 Software modification
4.4 Hardware
4.5 Digital data transmission between components of apparatus
4.6 Test routines
4.7 Instruction manual
4.8 Additional requirements for compliance with SIL 1
5 Test of the digital unit [Go to Page]
5.1 General
5.2 Verification of functional concept
5.3 Performance test
Annex A (normative)Hardware-software integration test [Go to Page]
A.1 Functional testing/Black-box testing
A.2 Equivalence class test with boundary value analysis
Annex ZY(normative)Significant changes between this European Standard and EN 50271:2010
Annex ZZ(informative)Relationship between this European standard and the essential requirements of Directive 2014/34/EU aimed to be covered [Go to Page]

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BS EN 50271:2018 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen. Requirements and tests for apparatus using software and/or digital technologies, 2018

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