BS EN 45544-1:2015
$198.66
Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours – General requirements and test methods
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 54 |
This European Standard specifies general requirements and test methods for the determination of the performance characteristics of personal, portable, transportable and fixed, continuous duty electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours in workplace atmospheres.
This European Standard is applicable to apparatus whose primary purpose is to provide an indication, alarm and/or other output function to give a warning of the presence of a toxic gas or vapour in the atmosphere and, in some cases, to initiate automatic or manual protective actions. It is applicable to apparatus in which the sensor automatically generates an electrical signal when gas is present.
This European Standard is not applicable to apparatus:
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used for the measurement of oxygen;
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used only in laboratories for analysis or measurement;
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used only for process measurement purposes;
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used in car parks or tunnels;
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used in the domestic environment;
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used in environmental air pollution monitoring;
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used for the measurement of combustible gases and vapours related to the risk of explosion.
It also does not apply to open-path (line of sight) area monitors.
For apparatus used for sensing the presence of multiple gases this standard applies only to the detection of toxic gas or vapour.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 16 | 4 General requirements 4.1 Introduction 4.2 Construction 4.2.1 General 4.2.2 Indicating devices 4.2.2.1 General |
| 17 | 4.2.2.2 Dead bands |
| 18 | 4.2.3 Alarm output functions 4.3 Fault signals 4.4 Adjustments |
| 19 | 4.5 Battery-powered apparatus 4.6 Gas detection transmitter for use with separate control units 4.7 Separate control units for use with gas detection transmitters 4.8 Apparatus using software and/or digital technologies 4.9 Labelling and marking 4.9.1 General |
| 20 | 4.9.2 Identification of the gas to be detected 4.10 Instruction manual |
| 23 | 5 Test methods 5.1 General requirements for tests 5.2 Samples and sequence of tests 5.2.1 Test samples 5.2.2 Sequence 5.2.3 Gas detection transmitters 5.2.4 Separate control units |
| 24 | 5.2.5 Test of compliance with general requirements 5.2.6 Apparatus with selectable range 5.2.7 Preparation of apparatus before each particular test |
| 25 | 5.2.8 Mask for calibration and test 5.3 Normal conditions for test 5.3.1 General |
| 26 | 5.3.2 Test gas(es) 5.3.3 Flow rate for test gases 5.3.4 Power supply 5.3.5 Temperature 5.3.6 Pressure 5.3.7 Humidity |
| 27 | 5.3.8 Stabilization 5.3.9 Orientation 5.3.10 Communications options 5.3.11 Gas detection apparatus as part of systems 5.4 Tests 5.4.1 General |
| 28 | 5.4.2 Unpowered storage 5.4.3 Measurement of deviations 5.4.3.1 Zero uncertainty, relative expanded uncertainty and calibration curve for EN 45544-2 apparatus 5.4.3.2 Calibration curve for EN 45544-3 apparatus |
| 29 | 5.4.4 Mechanical tests 5.4.4.1 Vibration |
| 30 | 5.4.4.2 Drop test 5.4.5 Environmental tests 5.4.5.1 Temperature |
| 31 | 5.4.5.2 Pressure 5.4.5.3 Humidity 5.4.5.4 Air velocity |
| 32 | 5.4.6 Performance tests 5.4.6.1 Alarm set point(s) |
| 33 | 5.4.6.2 Time to alarm or alarm reading 5.4.6.3 Flow rate 5.4.6.4 Warm-up time |
| 34 | 5.4.6.5 Time of response 5.4.6.6 Time of recovery 5.4.6.7 Addition of sampling probe (portable and transportable apparatus only) 5.4.6.8 Field calibration kit |
| 35 | 5.4.6.9 Gas concentrations above the full scale indication 5.4.6.10 Extended operation in test gas 5.4.6.11 Orientation tests |
| 36 | 5.4.7 Electrical tests 5.4.7.1 Battery capacity for battery-powered apparatus 5.4.7.2 Power supply variations 5.4.7.3 Electromagnetic compatibility |
| 37 | 5.4.7.4 Time-weighted average (TWA) function 5.4.8 Stability 5.4.9 Verification of software and digital components 6 Uncertainty of measurement and lower limit of measurement 6.1 General |
| 38 | 6.2 Method of calculation of uncertainty of measurement 6.2.1 General |
| 39 | 6.2.2 Sources of uncertainty 6.2.2.1 General 6.2.2.2 Measurement of deviations (from 5.4.3) |
| 40 | 6.2.2.3 Temperature (from 5.4.5.1) 6.2.2.4 Pressure (from 5.4.5.2) 6.2.2.5 Humidity (from 5.4.5.3) |
| 41 | 6.2.2.6 Air velocity (from 5.4.5.4) 6.2.2.7 Flow rate (from 5.4.6.3) |
| 42 | 6.2.2.8 Sampling probe (from 5.4.6.7) 6.2.2.9 Field calibration kit (from 5.4.6.8) 6.2.2.10 Extended operation in test gas (from 5.4.6.10) |
| 43 | 6.2.2.11 Orientation (from 5.4.6.11) 6.2.2.12 Battery capacity (from 5.4.7.1) 6.2.2.13 Power supply variations (from 5.4.7.2) |
| 44 | 6.2.2.14 Stability (from 5.4.8) 6.2.3 Calculation of relative expanded uncertainty 6.3 Method of calculation of lower limit of measurement |
| 46 | 7 Test report |
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BS EN 45544-1:2015 – TC:2020 Edition
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