【正文】 .. 9 Alarm by overriding the vertical sash stop ................................................................................................. 9 Air flow indicator............................................................................................................................................ 9 Containment test.......................................................................................................................................... 10 Objectives ..................................................................................................................................................... 10 Test equipment, test procedure and data analysis .................................................................................. 10 Test report .................................................................................................................................................... 10 Sound pressure measurement ................................................................................................................... 10 Objectives ..................................................................................................................................................... 10 Test procedure ............................................................................................................................................. 10 Test report .................................................................................................................................................... 10 6 Routine testing of type tested fume cupboards ....................................................................................... 10 Scope and purpose...................................................................................................................................... 10 Face velocity test ......................................................................................................................................... 11 Objectives ..................................................................................................................................................... 11 Test equipment and test procedure........................................................................................................... 11 Test report .................................................................................................................................................... 11 Extract volume flow rate test ...................................................................................................................... 11 Objectives ..................................................................................................................................................... 11 Sequential average face velocity test ........................................................................................................ 11 EN 141754:2022 3 Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 141754:2022: E EN 141754:2022 2 Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。I S C HES KOM I TEE F 220。 EUR OP 201。ge Teil 4: VorOrt Pr252。thodes d39。ENNE EUROP196。 BSI 2022 ISBN 978 0 580 50372 6 Amendments issued since publication Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。 標(biāo) 標(biāo) 準(zhǔn) 王 國(guó) 網(wǎng) 標(biāo)準(zhǔn) 下載地址 BRITISH STANDARD BS EN 141754:2022 Fume cupboards — Part 4: Onsite test methods The European Standard EN 141754:2022 has the status of a British Standard ICS Amd. No. Date Comments Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。 BSI 如果買家 需要 PDF 格式的本標(biāo)準(zhǔn)，可以 提供郵箱給我（前提是購(gòu)買了本標(biāo)準(zhǔn)） ，我免費(fèi)發(fā)送到你的郵箱。 BSI BS EN 141754:2022 National foreword This British Standard was published by BSI. It is the UK implementation of EN 141754:2022. Together with BS EN 141751:2022, BS EN 141752:2022, BS EN 141753:2022 , DD CEN/TS 141755:2022 and BS EN 141756:2022, it supersedes BS 72581:1994, BS 72582:1994, BS 72583:1994 and BS 72584:1994 which are withdrawn. To ensure pleteness of the requirements in the British implementation of these European standards, the safeguards contained in the BS 7258 series (. remendations for the exchange of information, installation, selection, use and maintenance) are retained. National annex NA (informative) reproduces clauses , , , , and of BS 72582:1994, plus clauses and 5 of BS 72583:1994. The UK participation in its preparation was entrusted to Technical Committee LBI/18, Laboratory furniture and fittings. A list of anizations represented on LBI/18 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2022 169。 BSI EUROPEAN STANDARD NORME EUROP201。ISCHE NORM EN 141754 September 2022 ICS English version Fume cupboards Part 4: Onsite t