NEN 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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ELEKTRISCH MATERIEEL VOOR DE DETECTIE EN METING VAN BRANDBARE GASSEN - GEBRUIKSEIGENSCHAPPEN VAN MATERIEEL VAN GROEP 1 MET MEETGEBIED TOT 5% (V/V) METHAAN IN LUCHT
01-10-2000
12-01-2013
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
Describes performance requirements for Group I (as defined in European Standard EN 50054) portable, transportable and fixed apparatus for detection and measurement of methane concentrations in mine air. The apparatus, or parts thereof, are designed for use in mines susceptible to firedamp and comply with requirements and test methods specified in European Standard EN 50054. Limited to apparatus intended for detection and measurement of methane volume ratios in air from 0% (V/V) up to but not exceeding 5% (V/V).
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Superseded
|
| Standards | Relationship |
| DIN EN 50055 : 1999 | Identical |
| BS EN 50055:1999 | Identical |
| EN 50055:1998 | Identical |
| UNE-EN 50055:1999 | Identical |
| I.S. EN 50055:1998 | Identical |
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