UL 920001-2010 UL Standard for Safety Performance Requirements for Toxic Gas Detectors (Second Edition Reprint with revisions through and including July 10 2015).pdf

1、 UL 920001 STANDARD FOR SAFETY Performance Requirements for Toxic Gas Detectors UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL Stand

2、ard for Safety for Performance Requirements for Toxic Gas Detectors, UL 920001 Second Edition, Dated December 23, 2010 Summary of Topics Adoption of ANSI/ISA 920001, Standard for Performance Requirements for Toxic Gas Detectors as ANSI/UL 920001. This Standard is being issued to update the title pag

3、e to reflect the reaffirmation of its ANSI approval. No changes in requirements have been made. As noted in the Commitment of Amendments statement located on the back side of the title page, UL and ISA are committed to updating this co-designated standard jointly after processing according to the st

4、andards development procedures by UL. Although this is the first-time publication of this Standard by UL, it is being published as the Second edition in order to align ULs edition number with that of the ISA Standard. Please note that as this is a simple reaffirmation of an existing ISA standard. Th

5、ese requirements are substantially in accordance with Proposal(s) on this subject dated May 8, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise

6、 without prior permission of UL. UL provides this Standard “as is“ without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or fitness for any purpose. In no event will UL be liable for any special, incidental, consequential,

7、indirect or similar damages, including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability

8、for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasona

9、ble attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures, and/or other elements of the Standard

10、 having future effective dates as indicated in the preface. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a “SUPERSEDED REQUIREMENTS“ notice. UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC

11、TION OR DISTRIBUTION WITHOUT PERMISSION FROM ULISA - International Society of Automation ANSI/ISA 920001-2010 (R2015) Second Edition Underwriters Laboratories Inc. ANSI/UL 920001 Second Edition Performance Requirements for Toxic Gas Detectors December 23, 2010 (Title Page Reprinted: July 10, 2015) A

12、NSI/ISA/UL 920001-2010 (R2015) UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULCommitment for Amendments This standard is issued jointly by ISA and Underwriters Laboratories Incorporated (UL). Comments or proposals for revisions on any part o

13、f the standard may be submitted to UL at any time. ISBN 978-1-941546-60-4 Copyright 2015 ISA All rights reserved. Not for resale. Printed in the United States of America. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means (electron

14、ic mechanical, photocopying, recording, or otherwise), without the prior written permission of the Publisher. The most recent designation of ANSI/ISA-92.00.01 as a Reaffirmed American National Standard (ANSI) occurred on July 10, 2015. Copyright 2015 Underwriters Laboratories Inc. ULs Standards for

15、Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of t

16、he Second Edition including revisions through July 10, 2015. The most recent designation of ANSI/UL 920001 as a Reaffirmed American National Standard (ANS) occurred on July 10, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, (front and back), or the

17、 Preface. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a pri

18、nted nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. To purchase UL Standards, visit Comm 2000 at http:/m- or call toll-free 1-888-853-3503. U

19、L COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL1 ANSI/ISA-92.00.01-2010 (R2015) ANSI/UL 920001 December 23, 2010 General Notes This is t

20、he common ISA and UL, Standard for the Performance Requirements for Toxic Gas Detectors. It is the second edition of ANSI/ISA-92.00.01 and the second edition of ANSI/UL 920001. The document is a modification of the ISA document to create the equivalent UL version and maintain the ANSI approval of th

21、is standard. ANSI/ISA-92.00.01 and ANSI/UL 920001 contain identical requirements, and identical publication dates. Efforts have been made to synchronize the UL edition number with that of the corresponding ISA standard with which this standard is harmonized. As a result, one or more UL edition numbe

22、rs have been skipped to match that of the ISA edition number. This common standard was prepared by the (ISA) - The International Society of Automation on December 23, 2010 but is now being maintained by Underwriters Laboratories Inc. (UL). Note: Although the intended primary application of this stan

23、dard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. UL Effective Date The requirements in this standard are in effect. A UL effective date is one established by Underwriters Labora

24、tories Inc. and is not part of the ANSI approved standard. UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULDecember 23, 2010 ANSI/ISA-92.00.01-2010 (R2015) ANSI/UL 920001 2 Preface (ISA) This preface, as well as all footnotes and annexes, is

25、included for information purposes and is not part of ANSI/ISA-92.00.01-2010 (R2015). This document has been prepared as part of the service of ISA toward a goal of uniformity in the field of instrumentation. To be of real value, this document should not be static but should be subject to periodic re

26、view. The ISA Standards and Practices Department is aware of the growing need for attention to the metric system of units in general, and the International System of Units (SI) in particular, in the preparation of instrumentation standards. The Department is further aware of the benefits to USA user

27、s of ISA standards of incorporating suitable references to the SI (and the metric system) in their business and professional dealings with other countries. Toward this end, this Department will endeavour to introduce SI-acceptable metric units in all new and revised standards, recommended practices,

28、 and technical reports to the greatest extent possible. Standard for Use of the International System of Units (SI): The Modern Metric System, published by the American Society for Testing b) personal monitors, similar in size and mass to the hand-held apparatus, that are continuously operating (but

29、not necessarily continuously sensing) while they are attached to the user; and c) larger apparatus that can be operated by the user while it is suspended by hand, by a shoulder strap or by a carrying harness; it may or may not have a hand directed probe. 3.23 REL (Recommended Exposure Limit): exposu

30、re levels that are safe for various periods of employment, including but not limited to the exposure levels at which no employee will suffer impaired health or functional capacities or diminished life expectancy as a result of that work experience. 3.24 range: the values of concentrations of toxic g

31、as over which accuracy is ensured by calibration. 3.25 spot-reading apparatus: apparatus intended to be used for short periods of time as required (typically 5 min or less). UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULDecember 23, 2010 AN

32、SI/ISA-92.00.01-2010 (R2015) ANSI/UL 920001 12 3.26 sample-draw: a method to cause deliberate flow of the atmosphere being monitored to a gas-sensing element. 3.27 signal-processing detector head: an apparatus intended to be incorporated with separate signal processing, data acquisition, central mon

33、itoring, or other similar systems in which the apparatus provides a conditioned electronic signal or output indication to systems of the aforementioned type that typically process information from various locations and sources including, but not limited to, gas-detection apparatus. 3.28 span: the al

34、gebraic difference between the upper and lower values of a range. 3.29 stabilization: state when three successive readings of an apparatus, taken at intervals equal to the maximum t(90) value defined in Annex A (Item 5), indicates no changes greater than the accuracy value defined in Annex A (Item 2

35、). 3.30 stationary apparatus: a gas-detection apparatus intended for permanent installation in a fixed location. 3.31 (TLV-)STEL, (Threshold Limit Value-) Short-Term Exposure Limit: a 15-minute Time-Weighted Average (TWA) exposure that should not be exceeded at any time during a workday, even if the

36、 8-hour TWA is within the Threshold Limit Value - Time-Weighted Average (TLV-TWA). 3.32 test gas: toxic gas diluted with clean air or inert gas to a known concentration within the test-gas tolerance stated in Annex A, Item 1. 3.33 transportable apparatus: apparatus not intended to be portable, but w

37、hich can be moved readily from one place to another. 3.34 (TLV-)TWA, (Threshold Limit Value-) Time-Weighted Average: the time-weighted average concentration for a normal 8-hour work day in a 40-hour work week, to which nearly all workers may be repeatedly exposed, day after day, without adverse effe

38、ct. 3.35 toxic gas: toxic gases, for the purpose of this standard, are gases that may cause significant acute health effects at low concentrations. Health effects may include severe skin or eye irritation, pulmonary edema, neurotoxicity, or other potentially fatal conditions. 3.36 trouble signal: in

39、formation that alerts an apparatus user to abnormal conditions. 3.37 stand-alone gas detection apparatus: a detector which provides a conditioned electronic signal or output indication to a system. The stand-alone detector head is intended to be interfaced to unspecified separate control unit, signa

40、l processing data acquisition, central monitoring, or other similar systems in which the apparatus provides a conditioned electronic signal or output indication to systems. 3.38 stand-alone control unit: fixed gas detection control units intended to provide meter indication, alarm functions, output

41、contacts and/or alarm signal outputs when utilized with stand-alone detector head. UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL13 ANSI/ISA-92.00.01-2010 (R2015) ANSI/UL 920001 December 23, 2010 4 General requirements 4.1 General 4.1.1 The

42、 gas detection apparatus shall be suitable for use in the intended location. NOTE This means that other relevant requirements (e.g. hazardous (classified) locations, environmental ratings, combustible gas detection, cross-sensitivity poisoning, etc.) must be addressed. 4.1.2 All toxic gas-detection

43、apparatus shall meet the minimum construction and test requirements contained within this standard. When verifying a manufacturers claimed superior performance or special features of construction, the minimum requirements of the standard must be met and the manufacturers claimed superior performance

44、 must be verified by test. The superior performance of one criterion may result in a reduced performance in other criteria. The additional tests should be agreed upon by the manufacturer and test laboratory and identified and described in the test report. EXAMPLES: (1) When a manufacturer claims a s

45、ensor accuracy over a defined temperature range of 50C to +40C at 10ppm (assuming a measuring range of 0-100ppm), the sensor shall meet the manufacturers claim from 50C to 10C and meet the specified requirements of section 5.15 for the temperature range of 10C to +40C. (2) For detectors that consist

46、 of detection and alarm capabilities for simultaneous detection of 5 or more gases, the product shall state the following, “Reference instruction manual for a list of all gases. The additional tests shall be agreed between the manufacturer and test laboratory. 4.1.3 Gas-detection apparatus, their co

47、mponents, and remote detector heads specifically intended for use in the presence of corrosive vapors or gases shall be constructed of materials resistant to, or protected against, corrosion. 4.1.4 Apparatus of the sample-draw type shall include the necessary sample-pumping mechanisms. 4.2 Indicatin

48、g devices (audible, visual and display) 4.2.1 An indication shall be provided to show that the apparatus is energized. NOTE For fixed apparatus the indication may be shown at the control unit. 4.2.2 For alarm-only apparatus or apparatus where the resolution of the read-out device is inadequate to de

49、monstrate compliance with this standard, the manufacturer shall identify suitable points for connecting indicating or recording devices for the purpose of testing the compliance of the apparatus with this standard. The indication on the readout device shall not contradict the results obtained by additional indicating or recording devices. NOTE - If the main mode of the apparatus is “alarm only”, but through a special or factory provided mode can display the gas reading