I.S. EN 50055:1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF COMBUSTIBLE GASES - PERFORMANCE REQUIREMENTS FOR GROUP 1 APPARATUS INDICATING UP TO 5% (V/V) METHANE IN AIR
Hardcopy , PDF
01-10-2003
English
01-01-1998
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.
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Foreword
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Performance requirements
5.1 General
5.2 Unpowered storage
5.3 Calibration curve (not applicable to alarm-only
apparatus)
5.4 Drift (continuous duty apparatus)
5.5 Drift (spot reading apparatus)
5.6 Alarm
5.7 Temperature
5.8 Pressure
5.9 Humidity
5.10 Air speed
5.11 Pumping rate
5.12 Orientation
5.13 Vibration (applicable only to machine-mounted
apparatus)
5.14 Drop test (applicable to portable apparatus and
remote sensors)
5.15 Warm-up time (not applicable to spot-reading
apparatus)
5.15.1 Fixed and transportable apparatus
5.15.2 Continuous duty transportable apparatus
5.16 Time of response (not applicable to spot-reading
apparatus
5.17 Minimum time of operation (spot-reading apparatus)
5.18 High gas concentrations above the measuring range
5.18.1 Non-ambiguity test
5.18.2 Residual effect
5.19 Battery capacity
5.19.1 Battery-powered portable continuous duty
apparatus
5.19.2 Portable spot-reading apparatus
5.20 Power supply variations
5.20.1 A.C. powered apparatus
5.20.2 External d.c. powered apparatus
5.20.3 Battery powered apparatus
5.21 Power supply interruptions, voltage transients
and step changes of voltage
5.22 Addition of sampling probe
5.23 Dust
5.24 Poisons and other gases
5.25 Electromagnetic immunity
6 Field calibration kit
7 Information for use
Covers performance requirements for Group 2 portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air up to 5% (v/v).
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| NEN EN 50055 : 1998 | Identical |
| UNE-EN 50055:1999 | Identical |
| BS EN 50055:1999 | Identical |
| DIN EN 50055 : 1999 | Identical |
| NF EN 50055 : 92 AMD 1 98 | Identical |
| NBN EN 50055 : 1998 | Identical |
| EN 50055:1998 | Identical |
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