SN EN 50241-1 : 1999
Current
The latest, up-to-date edition.
SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
01-12-2013
Foreword
1 Scope
2 Normative references
3 Definitions
4 General requirements
4.1 Introduction
4.2 Construction
5 Test requirements
5.1 Introduction
5.2 General requirements for tests
5.3 Normal conditions for test
5.4 Test methods
6 Field verification equipment
7 Information for use
7.1 Labelling and marking
7.2 Instruction manual
Annex A (informative) Atmospheric visibility
Annex B (informative) Bibliography
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