BS 7356:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
15-04-1999
English
30-11-1990
National foreword
Brief history
Text of EN 140
Specification
1. Object and field of application
2. References
3. Definition and description
4. Requirements
5. Testing
6. Marking
7. Instructions for use
Annex
A. Recommended test procedure for exhalation valve
leakage
Table
1. Summary of tests
Figures
1. Basket and hopper, rubber chippings
2. Facial dimensions
3. Filter simulator for standard thread filters/half
masks or quarter masks
4. Scheme of the SF6-test rig for inward leakage
5. Assembly of atomizer
6. Apparatus used in the determination of inward
leakage using sodium chloride
7. Dummy head (Sheffield head) for carbon dioxide
content test of the inhalation air (dead space)
for a half mask or a quarter mask
8. Scheme of test rig for carbon dioxide content of
the inhalation air
9. Test arrangement for tensile force
10. Apertometer
11. Diagram of the apertometer
12. Scheme of exhalation valve leakage test box
13. Scheme of test rig for valve leakage using a single
cylinder machine
14. Scheme of test rig for valve leakage using a twin
cylinder breathing machine
National appendix A
National appendix B
Cooperating organizations
Important note : All end users must be registered with an Account prior to user licenses being assigned.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.