NEN EN 13821 : 2002
Current
The latest, up-to-date edition.
POTENTIALLY EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - DETERMINATION OF MINIMUM IGNITION ENERGY OF DUST/AIR MIXTURES
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test apparatus
4.1 Spark generation circuit
4.2 Test vessel
5 Test sample
6 Test procedure
6.1 Test description
6.2 Calibration
6.3 Conformity
6.3.1 Conformity tests
6.3.2 Criteria for conformity
6.4 Test report
Annex A (normative) Descriptions of spark generating systems
A.1 General
A.2 Triggering by high-voltage relay, using a
two-electrode system
A.3 Triggering by electrode movement, using a
two-electrode system
A.4 Triggering by auxiliary spark, using 3-electrode
system
A.5 Triggering by voltage increase, using two-electrode
system
A.6 Triggering by transformer, using two-electrode
system
A.7 Example of a test apparatus
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions
of EU Directives
Bibliography
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