ANSI IEEE N42.6-1980 Interrelationship of Quartz-Fiber Electrometer Type Exposure Meters and Companion Exposure Meter Chargers.pdf

1、ANSI N42.6-1980(Revision of ANSI N42.6-1965)American National Standard Interrelationship of Quartz-Fiber Electrometer Type Exposure Meters and Companion Exposure Meter ChargersSecretariat for N42Institute of Electrical and Electronics Engineers, IncApproved February 15, 1978Reaffirmed April 30, 1985

2、Reaffirmed March 11, 1991American National Standards InstitutePublished byThe Institute of Electrical and Electronics Engineers, Inc345 East 47th Street, New York, NY 10017American National StandardAn American National Standard implies a consensus of those substantially concerned with its scope and

3、provisions.An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public.The existence of an American National Standard does not in any respect preclude anyone, whether he has approved thestandard or not, from manufacturing, marketing, purchasing,

4、 or using products, processes, or procedures notconforming to the standard. American National Standards are subject to periodic review and users are cautioned toobtain the latest editions.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures ofthe Am

5、erican National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard nolater than five years from the date of publication. Purchasers of American National Standards may receive currentinformation on all standards by calling or writing the American National

6、Standards Institute. Copyright 1980 byThe Institute of Electrical and Electronics Engineers, Inc.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without theprior written permission of the publisher.iiiForeword(This Foreword is not a part of

7、ANSI N42.6-1980, American National Standard Interrelationship of Quartz-Fiber Electrometer TypeExposure Meters and Companion Exposure Meter Chargers.)The first version of this standard was approved as ANSI N3-1965 on September 20, 1965 after being letter ballotted onJune 2, 1964 by ANSI Technical Co

8、mmittee N 3 (Now N 42). It was reaffirmed in 1971, based on N 42 letter ballot ofDecember 14, 1970, and was redesignated as N 42.6. The standard has been revised and the revision approved by N 42letter ballot of May 16, 1977.At the time it approved this standard, the American National Standards Comm

9、ittee N 42 on Radiation Instrumentationhad the following personnel:Louis Costrell, Chair David C. Cook, Secretary Organization Represented Name of RepresentativeAmerican Chemical SocietyAmerican Conference of Governmental Industrial Hygienists Jesse LiebermanAmerican Industrial Hygiene AssociationAm

10、erican Nuclear Society Frank W. ManningAmerican Society of Mechanical Engineers P. E. GreenwoodAmerican Society of Safety EngineersAtomic Industrial ForumHealth Physics Society J. B. Horner KuperRobert L. Butenhoff (Alt)Institute of Electrical and Electronics Engineers Louis Costrell D. C. Cook (Alt

11、) P. J. Spurgin (Alt) J. Forster (Alt)Instrument Society of America M. T. Slind J. E. Kaveckis (Alt)Lawrence Berkeley Laboratory Lee J. WagnerManufacturing Chemists AssociationNational Electrical Manufacturers Association Theodore HamburgerOak Ridge National Laboratory Frank W. Manning D. J. Knowles

12、 (Alt)Scientific Apparatus Makers AssociationUS Department of the Army, Materiel Command Abraham E. CohenUS Department of Commerce, National Bureau of Standards Louis CostrellUS Civil Defense Preparedness Agency Carl R. Siebentritt, JrUS Department of EnergyUS Naval Research Laboratory David C. Cook

13、ivCarl R. Siebentritt, Jr, of the US Civil Defense Preparedness Agency served as project leader for this standard and thefollowing constituted the review group:Members-at-Large J. G. Bellian O. W. Bilharz S. H. Hanauer John M. Gallagher, Jr Voss A. Moore R. F. Shea E. J. VallairoArgonne National Lab

14、oratory Health Physics DivisionAir Force Systems Command Harley PiltingsrudArmy Electronics Command A. E. CohenBaird Atomics Dosimeter Products SpecialistBattelle Northwest Laboratory Lyle CarterBrookhaven National Laboratory Charles MeinholdDosimeters, Inc Thomas JacksonNational Bureau of Standards

15、 Thomas LoftusNaval Electronic Systems Command C. S. HollanderNuclear Associates H. GlasserOak Ridge National Laboratory John AuzierUS Civil Defense Preparedness Agency E. F. WilliamsVictoreen Instrument Co J. G. JohnstonOrganization Represented Name of RepresentativeCopyright 1980 IEEE All Rights R

16、eserved 1American National Standard Interrelationship of Quartz-Fiber Electrometer Type Exposure Meters and Companion Exposure Meter Chargers1. Purpose and ScopeThe purpose of this standard is to specify interrelating mechanical and electrical properties so that quartz-fiberexposure meters may be us

17、ed with any charger. Other characteristics peculiar to these devices but not affecting theinterrelationship between chargers and exposure meters are purposely omitted. These are described in ANSI N13.5-1972. 2. Quartz-Fiber Exposure Meters2.1 zero set voltagesThe voltage required for zero set shall

18、be in the range of 140 V to 195 V.2.2 distance to charging electrodeThe distance from the end of the exposure meter to the charging electrode shall be 5.59 0.76 mm (0.220 0.030 in)in the charging position, and 3.81 mm (0.150 in) minimum in the normal position (see Fig 1).2.3 force to close switch in

19、 exposure meterThe charging electrode shall make electrical contact with the internal electrometer under an applied force of from 21/2lb(11 N) to 51/2lb (25 N) over a temperature range of 10 C to 50 C (14 F to 122 F).2 Copyright 1980 IEEE All Rights ReservedANSI N42.6-1980 INTERRELATIONSHIP OF QUART

20、Z-FIBER ELECTROMETER TYPE EXPOSURE METERS2.4 charging recess diameterThe diameter of the charging recess shall be 9.27 0.13 mm (0.365 0.005 in) to a depth of at least 4.83 mm (0.190 in).The diameter of the charging recess shall be a minimum of 9.14 mm (0.360 in) to a depth of at least 6.60 mm (0.260

21、 in).2.5 outside diameterThe exposure meter shall be a uniform right cylinder and shall have an outside diameter, exclusive of the clip andmarking, of 15.9 mm (0.625 in) maximum and 12.57 mm (0.495 in) minimum.2.6 lengthThe exposure meter shall not exceed 115 mm (4.5 in) in length.2.7 center electro

22、de diameterThe charging electrode shall have an outside diameter of from 1.02 mm (0.040 in) to 2.54 mm (0.100 in). If a tube, theelectrode shall have a wall thickness of at least 0.25 mm (0.010 in)and the tube shall have a closed end.2.8 electrode concentricityThe charging electrode shall be coaxial

23、 with the charging recess to within 0.13 mm (0.005 in).3. Exposure Meter Charger3.1 charger voltageThe charging potential shall be continuously variable between 100 V and 220 V and shall be of positive polarity.3.2 pedestal heightThe overall active height of the pedestal from the top of the charging

24、 electrode to the top of the bottoming feature shallbe 9.53 1.91 mm (0.375 0.075 in).3.3 bottom featureAs an exposure meter is moved downward over the charging contact assembly, forces in excess of 8 lb (36 N) shallcause the exposure meter barrel to bottom with the nonmoving mounting of the charging

25、 contact assembly.3.4 charging electrode forceThe charging electrode shall be capable of applying a force of between 61/2and 8 lb (29 N and 36 N) to the chargingpin of the exposure meter. In no case shall it be possible to apply more than 8 lb (36 N) to the charging pin of theexposure meter.Copyrigh

26、t 1980 IEEE All Rights Reserved 3AND COMPANION EXPOSURE METER CHARGERS ANSI N42.6-19803.5 light switch forceThe force required to activate the light switch (if included) shall be between 0.250 lb (1.1 N) and 1.5 lb (6.8 N).3.6 pedestal diameterThe outside diameter of the charging pedestal shall be 8

27、.76 0.13 mm (0.345 0.005 in).3.7 charging electrode diameterThe diameter of the contact end of the charging electrode shall be 1.91 0.64 mm (0.075 0.025 in).3.8 charging electrode heightThe charging electrode or cap shall extend above the top of the charging pedestal no less than 0.13 mm (0.005 in)

28、andno more than 1.02 mm (0.040 in).3.9 electrode concentricityThe charging electrode shall be coaxial with the pedestal within 0.13 mm (0.005 in).3.10 light switch travelThe light shall be turned on when an exposure meter is placed in position on the charging contact assembly and ismoved downward a

29、distance no greater than 3.18 mm (0.125 in).3.11 charging recessIf the pedestal is recessed in a well, the minimum inside diameter of the charging socket well shall be 16 mm (0.630 in).3.12 contactThe contact resistance between any two surfaces designated to be at the same electrical potential shall

30、 not exceed onemegohm.4. Exposure Meter and Charger4.1 contactDuring the normal charging operation, the exposure meter and charger shall provide for electrical contacts betweenboth the center electrodes and the shells, or cases of each. At no time during the operation shall the contact resistancebet

31、ween the exposure meter and charger exceed one megohm.4 Copyright 1980 IEEE All Rights ReservedANSI N42.6-19804.2 lightThe charging unit shall permit the position of the indicating element on the scale of the exposure meter to be clearlyresolved. If the charger has self-contained illumination, this criterion shall apply over the life of the battery utilized.Figure 1 Dimensions for Radiological Exposure Meter and Exposure Meter Charger