ANSI SP3.3-2012 The Protection of Electrostatic Discharge Susceptible Items - Periodic Verification of Air Ionizers.pdf

1、 Reaffirmation of ANSI/ESD SP3.3-2012 For the Protection of Electrostatic Discharge Susceptible Items - Periodic Verification of Air Ionizers Electrostatic Discharge Association 7900 Turin Road, Bldg. 3 Rome, NY 13440 An American National Standard Approved January 3, 2017 ANSI/ESD SP3.3-2016 ESD Ass

2、ociation Standard Practice for the Protection of Electrostatic Discharge Susceptible Items - Periodic Verification of Air Ionizers Approved September 23, 2016 EOS/ESD Association, Inc.ANSI/ESD SP3.3-2016 Electrostatic Discharge Association (ESDA) standards and publications are designed to serve the

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12、IMS OF THIRD PARTIES. Published by: Electrostatic Discharge Association 7900 Turin Road, Bldg. 3 Rome, NY 13440 Copyright 2016 by ESD Association All rights reserved No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written p

13、ermission of the publisher. Printed in the United States of America ISBN: 1-58537-292-7DISCLAIMER OF WARRANTIES DISCLAIMER OF GUARANTY LIMITATION ON ESDAs LIABILITY CAUTION NOTICE ANSI/ESD SP3.3-2016 i (This foreword is not part of ESD Association Standard Practice ANSI/ESD SP3.3-2016) FOREWORD Grou

14、nding of conductive and static dissipative materials, personnel, and equipment is the primary method used to limit static charge for the protection of electrostatic discharge susceptible items in the work environment. A static control program may include air or nitrogen ionization techniques to miti

15、gate charge on isolated conductors (conductors that are not grounded), and insulating materials (e.g., most common plastics). The ionization standard test method, ANSI/ESD STM3.1, defines test methods and instrumentation, the Charged Plate Monitor (CPM), for making discharge (charge neutralization)

16、time and offset voltage (ion balance) measurements of air ionization equipment in defined environments. These standard test methods are applicable for product qualification, selecting an air ionizer for a specific application, as well as subsequently determining that the incoming product meets the s

17、election criteria. The test instrumentation and methods of the standard test method are also usable for compliance verification of ionizer performance per ESD TR53. ANSI/ESD STM3.1 also contains additional information regarding ionizer physics, ionizer measurement issues, and sources of measurement

18、error. The user is advised to review ANSI/ESD STM3.1 before using the procedures described in this standard practice1. Detailed performance testing under laboratory conditions may be required during selection, product qualification, and acceptance testing due to the variety of environments in which

19、ionizers are used. Periodic and compliance verification, however, are most often performed under actual use conditions. In general, all ionizers must be tested, rather than a sampling of product types or incoming lots. Periodic verification procedures should also be part of the initial acceptance pr

20、ocess to provide a baseline for comparison with future measurements. Compliance verification may be necessary to meet audit requirements. ANSI/ESD STM3.1 is sufficient to be used for product qualification, selection or acceptance testing, as well as for compliance verification. However, these proced

21、ures require a typically expensive test instrument and a substantial amount of time to test each ionizer. The cost of this testing is often unacceptable for purposes of periodic verification. There is a need for a simpler verification procedure using less expensive, preferably portable, test equipme

22、nt. Periodic verification provides a relative measure of performance and can indicate when it is necessary to check the calibration of the ionizer under test with the CPM (refer to ANSI/ESD STM3.1). This standard practice presents a test procedure and instrumentation for periodic verification of ion

23、izers contained in the existing ionization standard test method ANSI/ESD STM3.1. The test procedure can be carried out under actual use conditions and is capable of rapidly demonstrating ionizer performance. Discharge times and offset voltage testing contained in the ionization standard test method

24、were adapted for this periodic test procedure. It is important that a simplified verification procedure correlate reasonably with CPM test results. The objective of the test procedure described in this document is to identify if a significant change in ionizer performance has occurred. The test setu

25、ps proposed are not meant to be a recommendation for any particular ionizer configuration. The wide variety of ionizers, and the environments within which they are used, will often require test setups different from those described in this standard practice. For purposes of periodic verification, it

26、 is important that ionizers are tested in their normal operating configuration. Users of this standard practice should 1 ESD Association Standard Practice: A procedure for performing one or more operations or functions that may or may not yield a test result. Note, if a test result is obtained it ma

27、y not be reproducible. ANSI/ESD SP3.3-2016 ii be prepared to adapt the test procedure and setups as required to produce meaningful data in their own application of ionizers. Similarly, the test procedure and conditions chosen in this standard practice do not represent a recommendation for acceptable

28、 ionizer performance. There is a wide range of item sensitivities to static charge. There is also a wide range of environmental conditions affecting the operation of ionizers. Performance specifications should be an agreement between the user and manufacturer of the ionizer in each application. Comp

29、liance with these specifications should be demonstrated during product qualification or selection and acceptance testing of the ionizers. Users of this standard practice will be able to establish baseline performance in the actual use location for their own application of ionizers. At any time in th

30、e future, using the same procedures in this standard practice, the user will be able to verify whether or not the ionizer is providing a comparable level of performance. The user will need to decide the extent of the data required for each application. This standard practice was originally designate

31、d ESD SP3.3-2000 and approved on February 6, 2000. ANSI/ESD SP3.3-2006 was a reaffirmation, re-designation of ESD SP3.3-2000 and approved on June 11, 2006. ANSI/ESD SP3.3-2016 is a reaffirmation of ANSI/ESD SP3.3-2012 and was approved on September 23, 2016. At the time ANSI/ESD SP3.3-2016 was prepar

32、ed, the 3.0 Ionization Subcommittee had the following members: Charles McClain, Chair Micron Technology, Inc. Kevin Duncan, TAS Rep Seagate Technology Eugene Felder Desco Industries, Inc. David Girard Honeywell Aerospace Shane Heinle Digi-Key Corporation Vladimir Kraz OnFILTER, Inc. Gregory Manning

33、NASA/ARES Technical Services Gene Monroe NASA - LARC Dale Parkin Seagate Technology Timothy Prass Raytheon Arnold Steinman Electronics Workshop Matt Strickland L-3 Communications, Inc. David Swenson Affinity Static Control Consulting, LLC Julius Turangan Dou Yee Enterprises Robert Vermillion RMV Tec

34、hnology Group, LLC Joshua Yoo Core Insight, Inc. Craig Zander Transforming Technologies ANSI/ESD SP3.3-2016 iii The following individuals contributed to the development of ANSI/ESD SP3.3-2012, ANSI/ESD SP3.3-2006, and ESD SP3.3-2000. Brent Beamer 3M Donn Bellmore Advanced ESD Services+ Jim Curtis SI

35、MCO Kevin Duncan Seagate Technology Eugene Felder Desco Industries, Inc. Ron Gibson Celestica International Stephen Halperin Stephen Halperin & Associates Jay Hamlin Medtronic Steve Heymann Ion Systems, Inc. Tim Jarrett CPI Guidant Corp Niels Jonassen Technical University of Denmark Vladimir Kraz Be

36、st ESD Technical Services Jim Krzmarzick Gene Monroe NASA - LARC Carl Newberg Rivers Edge Technical Service Dale Parkin Seagate Technology Roger Peirce SIMCO-Ion Tim Prass Raytheon Donald Pritchard Monroe Electronics, Inc. Richard Rodrigo Simco Jeff Salisbury Flextronics Jim Schiffhauer NRD, Inc. Ar

37、nold Steinman Electronics Workshop David Swenson Affinity Static Control Consulting, LLC Julius Turangan Ovation, Inc. Robert Vermillion RMV Technology Group William Vosteen Monroe Electronics Gene Williams NOVX Craig Zander Prostat Corporation ANSI/ESD SP3.3-2016 iv TABLE OF CONTENTS 1.0 PURPOSE AN

38、D SCOPE . 1 1.1 PURPOSE . 1 1.2 SCOPE . 1 2.0 REFERENCED PUBLICATIONS 1 3.0 DEFINITIONS 1 4.0 PERSONNEL SAFETY . 1 5.0 TEST FIXTURE AND INSTRUMENTATION 2 6.0 GENERAL MEASUREMENT PROCEDURE 3 6.1 SETUP 3 6.2 DISCHARGE TIME 3 6.3 OFFSET VOLTAGE . 4 7.0 SPECIFIC PERIODIC VERIFICATION PROCEDURES FOR IONI

39、ZERS 4 7.1 ROOM IONIZATION . 4 7.2 LAMINAR FLOW HOOD IONIZATION . 5 7.3 WORKSURFACE IONIZATION . 7 7.4 POINT OF USE (COMPRESSED GAS) IONIZATION . 9 ANNEXES ANNEX A (INFORMATIVE) 10 ANNEX B (INFORMATIVE) ION COLLECTION PLATE CORRELATION . 12 ANNEX C (INFORMATIVE) REVISION HISTORY FOR ANSI/ESD SP3.3 1

40、3 ANNEX D (INFORMATIVE) BIBLIOGRAPHY 14 ANSI/ESD SP3.3-2016 v FIGURES Figure 1: Example Test Fixture and Instrumentation 2 Figure 2: Example of a Test Fixture with 7.5 cm x 7.5 cm (3 inch x 3 inch) Plate 3 Figure 3: Room Ionization AC Grid Ionizer 4 Figure 4: Room Ionization AC, Steady DC, or Pulsed

41、 DC Bar Ionizer 4 Figure 5: Room Ionization Discrete Emitter DC Ionizer . 5 Figure 6: Room Ionization Pulsed DC Ionizer 5 Figure 7: Room Ionization Typical Side View 5 Figure 8: Vertical Laminar Flow Hood Ionization Top View . 6 Figure 9: Vertical Laminar Flow Hood Ionization Side View 6 Figure 10:

42、Horizontal Laminar Flow Hood Ionization Top View . 7 Figure 11: Horizontal Laminar Flow Hood Ionization Side View 7 Figure 12: Worksurface Bench Top Ionizer Top View . 8 Figure 13: Worksurface Bench Top Ionizer Side View . 8 Figure 14: Worksurface Overhead Ionizer Top View . 8 Figure 15: Worksurface

43、 Overhead Ionizer Side View 9 Figure 16: Point of Use (Compressed Gas) Ionizer 9ESD Association Standard Practice ANSI/ESD SP3.3-2016 1 ESD Association Standard Practice for the Protection of Electrostatic Discharge Susceptible Items Periodic Verification of Air Ionizers 1.0 PURPOSE AND SCOPE 1.1 Pu

44、rpose This standard practice provides test procedures for periodic verification of the performance of air ionization equipment and systems (ionizers). 1.2 Scope This standard practice establishes measurement procedures, under recommended conditions, to periodically determine offset voltage (ion bala

45、nce) and discharge (charge neutralization) times for ionizers in their actual use locations. This standard practice does not include measurements of electromagnetic interference (EMI), or uses of ionizers in connection with ordnance, flammables, explosive items, or electrically initiated explosive d

46、evices. 2.0 REFERENCED PUBLICATIONS Unless otherwise specified, the following documents of the latest issue, revision or amendment form a part of this standard to the extent specified herein: ESD ADV 1.0, ESD Associations Glossary of Terms2 ANSI/ESD STM3.1, Ionization2 3.0 DEFINITIONS The terms used

47、 in the body of this document are in accordance with the definitions found in ESD ADV1.0, ESD Associations Glossary of Terms available for complimentary download at www.esda.org. 4.0 PERSONNEL SAFETY THE PROCEDURES AND EQUIPMENT DESCRIBED IN THIS DOCUMENT MAY EXPOSE PERSONNEL TO HAZARDOUS ELECTRICAL

48、 CONDITIONS. USERS OF THIS DOCUMENT ARE RESPONSIBLE FOR SELECTING EQUIPMENT THAT COMPLIES WITH APPLICABLE LAWS, REGULATORY CODES, AND BOTH EXTERNAL AND INTERNAL POLICY. USERS ARE CAUTIONED THAT THIS DOCUMENT CANNOT REPLACE OR SUPERSEDE ANY REQUIREMENTS FOR PERSONNEL SAFETY. GROUND FAULT CIRCUIT INTE

49、RRUPTERS (GFCI) AND OTHER SAFETY PROTECTION SHOULD BE CONSIDERED WHEREVER PERSONNEL MIGHT COME INTO CONTACT WITH ELECTRICAL SOURCES. ELECTRICAL HAZARD REDUCTION PRACTICES SHOULD BE EXERCISED AND PROPER GROUNDING INSTRUCTIONS FOR EQUIPMENT SHOULD BE FOLLOWED. THE RESISTANCE MEASUREMENTS OBTAINED THROUGH THE USE OF THIS TEST METHOD SHALL NOT BE USED TO DETERMINE THE RELATIVE SAFETY OF PERSONNEL EXPOSED TO HIGH AC OR DC VOLTAGES. 2 EOS/ESD Association, Inc., 7900 Turin Road, Bldg. 3, Rome, NY 13440, 315-339-6937, www.esda.org ANSI/ESD SP3.3-2016 2 5.0