I.S. EN 401:1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
RESPIRATORY PROTECTIVE DEVICES FOR SELF RESCUE - SELF CONTAINED CLOSED CIRCUIT BREATHING APPARATUS - CHEMICAL OXYGEN (KO2) ESCAPE APPARATUS - REQUIREMENTS, TESTING, MARKING
Hardcopy , PDF
01-24-2003
English
01-01-1993
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Cooperating organizations
National foreword
Foreword
Specification
Introduction
1. Scope
2. Normative references
3. Definitions and description
4. Classification
5. Requirements
6. Testing
7. Instructions for use
8. Marking
Annexes
A. (normative) Additional requirement for apparatus
designed for special use
B. (normative) Methods of measurement of the insulation
resistance of the carrying container
Tables
1. Test conditions
Figures
1. Test piece with painted electrodes
2. Apparatus for testing of flammability
3. Test equipment for mechanical strength
4. Scheme of relief valve leakage test box
5. Scheme of test rig for valve leakage using a
single cylinder breathing machine
6. Scheme of test rig for relief valve leakage using
a twin cylinder breathing machinei
7. Scheme of test rig for chemical oxygen (KO2) escape
apparatus
8. Cooler
9. Humidifier
10. Dummy head for apparatus with permanently connected
full face mask
11. Connector for apparatus having a permanently
connected mouthpiece assembly
B.1 Current measurement by microammeter or galvanometer
B.2 (a) Current measurement by means of a d.c. amplifier
B.2 (b) Current measurement by means of a d.c. amplifier
B.3 (a) Determination of the ratio of currents when the
same voltage is applied successively to the two
resistances
B.3 (b) Wheatstone bridge method
National annexes
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references
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