BS-6069-5.1-1994 ISO-8756-1994.pdf
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1、BRITISH STANDARD BS 6069-5.1: 1994 ISO 8756:1994 Characterization of air quality Part 5: General Section 5.1 Handling of temperature, pressure and humidity data Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:30:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6069-5.1:1994 This British St
2、andard, having been prepared under the direction of the Environment and Pollution Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 August 1994 BSI 06-1999 The following BSI references relate to the work on this standard: Committee refer
3、ence EPC/35 Draft for comment 92/56573 DC ISBN 0 580 23416 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Environment and Pollution Standards Policy Committee (EPC/-) to Technical Committee EPC/35, upon which the following bodies were
4、 represented: Association of Consulting Scientists British Cement Association British Coal Corporation Combustion Engineering Association Department of Health Department of the Environment (Her Majestys Inspectorate of Pollution) Department of Trade and Industry (Laboratory of the Government Chemist
5、) Department of Trade and Industry (Warren Spring Laboratory) Engineering Equipment and Materials Users Association European Resin Manufacturers Association GAMBICA (BEAMA Ltd.) Health and Safety Executive Institute of Petroleum Institution of Environmental Health Officers National Society for Clean
6、 Air Royal Society of Chemistry The following bodies were also represented in the drafting of the standard, through subcommittees and panels: BCIRA British Steel plc Institute of Occupational Medicine Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na
7、, Tue Dec 05 01:30:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6069-5.1:1994 BSI 06-1999i Contents Page Committees responsible Inside front cover National foreword ii 1Scope 1 2Procedures for adjustment of air quality measurements for changes in atmospheric pressure, temperature and humidity du
8、ring the sampling period 1 3Reference conditions of temperature, pressure and humidity 2 4Reporting results of air quality measurements2 Annex A (informative) Bibliography Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:30:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
9、6069-5.1:1994 ii BSI 06-1999 National foreword This Section of BS 6069 has been prepared under the direction of the Environment and Pollution Standards Policy Committee. It is identical with ISO 8756:1994 Air quality Handling of temperature, pressure and humidity data, published by the International
10、 Organization for Standardization (ISO). ISO 8756 was prepared by Technical Committee ISO/TC 146 “Air quality”, Subcommittee 4 “General aspects”, with the active participation and approval of the UK. BS 6069 is being published in a series of Parts and Sections that will generally correspond to parti
11、cular International Standards arising from the UK participation in the work of ISO/TC 146. This Section of BS 6069 is one of several relating to Characterization of air quality General, published as a Section of Part 5. Topics relating to other aspects of air quality characterization will be publish
12、ed as further Parts or Sections of BS 6069. Methods for the determination of particular constituents of ambient air are being published as Parts of BS 1747 Methods for the measurement of air pollution. A British Standard does not purport to include all the necessary provisions of a contract. Users o
13、f British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a ba
14、ck cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 01:30:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8756:1994(E)
15、 BSI 06-19991 1 Scope This International Standard describes procedures for adjusting air quality measurements for changes in temperature, pressure and humidity during the sampling period. It also specifies the reference conditions of temperature, pressure and humidity to be used when reporting the r
16、esults. The procedures and reference conditions are applicable to air quality measurement methods and apply to measurements made in ambient and workplace atmospheres and to the measurement of stationary source emissions. 2 Procedures for adjustment of air quality measurements for changes in atmosphe
17、ric pressure, temperature and humidity during the sampling period 2.1 Ambient and Workplace Atmospheres 2.1.1 General Atmospheric temperature, pressure and humidity may all change during the sampling period, which may be of a duration of several minutes or several weeks, depending on the location at
18、 which the air quality measurements are made (workplace or ambient) and the purpose for which they are required. Pressure and absolute humidity change slowly, but temperature and relative humidity changes may be much more sudden. For example, a daily change in pressure may be of the order of approxi
19、mately 4 000 Pa taking place fairly smoothly at a rate of 200 Pa/h. Temperature changes may be approximately 20 C in the course of several hours, although in heated indoor workplaces the temperature is likely to remain fairly constant. Conversely, in some workplaces in industrial plants (e.g. near b
20、last furnaces), changes may be very sudden and large. The effect of change in humidity will be different for different methods of air quality measurement and is not merely a correction for the volume of air sampled. For the effect of humidity, it is essential to refer to the specific air quality mea
21、surement method. 2.1.2 Sampling period of up to 15 min duration Atmospheric temperature, pressure and humidity are unlikely to change significantly in any 15 min period and corrections for changes are therefore unnecessary. In this case, the atmospheric temperature and pressure (where relevant, the
22、absolute or relative humidity) should be noted at the time of sampling. 2.1.3 Sampling period of up to 1 h duration Atmospheric pressure is unlikely to change greatly during a 1 h sampling period, but the temperature may change significantly during normal weather conditions. In this case, atmospheri
23、c pressure should be noted once during the sampling period, the temperature measured at the start and finish of sampling and the mean value recorded. Where relevant, the absolute or relative humidity should be noted once during the sampling period, preferably at the middle of the period. 2.1.4 Sampl
24、ing period of up to 12 h duration Atmospheric temperature and pressure (and, where relevant, absolute or relative humidity) should be measured at the start of the sampling period and then at intervals of 1 h. The mean values should be used in calculating air quality results. Sometimes, particularly
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