1、Designation:F146804a(Reapproved 2010)Standard Practice forEvaluation of Metallic Weapons Detectors for ControlledAccess Search and Screening1This standard is issued under the fixed designation F1468;the number immediately following the designation indicates the year oforiginal adoption or,in the cas
2、e of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers methods for the evaluation ofwalk-through metal weapons detectors and criter
3、ia for testingmetal detection performance.1.2 This practice specifies certain health,safety,and humanfactors criteria pertaining to the usage of the detection equip-ment.1.3 This practice requires the use of non-standardized(user-supplied)test objects and test equipment.Evaluations madeusing the pro
4、cedures outlined in this practice can be used forcomparative evaluations only if the tests are made with thesame equipment and test objects.1.4 This practice is intended for use by manufacturers andevaluators of electromagnetic field devices used for screeningpersons entering into controlled access
5、areas.It is not intendedtosetperformancenorlimitorconstrainoperatingtechnologies,nor is it a document for use by individualoperators or users of such equipment at specific access controlpoints.1.5 The values stated in SI units are to be regarded as thestandard.Other units given in parentheses are fo
6、r informationonly.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.
7、For a specifichazards statement,see warning note in 12.2.5.2.Referenced Documents2.1 ANSI/IEEE Standard:C62.41 IEEE Guide for Surge Voltages in Low Voltage ACPower Circuits23.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 clean testerperson who does not carry any objectswhich wo
8、uld significantly alter the signal produced when theperson carries a test object;smaller test objects require morecomplete elimination of metallic objects.By example but notlimitation,such significant objects may include:metallic beltbuckles,metal buttons,cardiac pacemakers,coins,metal-frameeye glas
9、ses,hearing aids,jewelry,keys,mechanical pens andpencils,shoes with metal shanks or arch supports,metallicsurgical implants,undergarment support metal,and metalzippers.A clean tester passing through a metal detector shallnot cause a disturbance signal greater than 10%of thatproduced when carrying th
10、e critical test object through thedetector.The tester shall have a mass between 50 and 100 kg(110 and 220 lb)and a height between 1.50 and 1.90 m(59 and75 in.).If the detector is designed to be sensitive to body sizebecause of design or desired sensitivity,the physical size oftesters should be small
11、er and within a narrower range.3.1.2 critical orientationorientation of a test object whichproduces the smallest detection signal or weakest detection.3.1.3 critical sensitivity settingsensitivity setting of adetector at which the critical test object in its critical orienta-tion is detected at a 90
12、%or greater rate at the weakest orcritical test point for the detector.3.1.4 critical test objecttest object out of a given group ofobjects which,in its worst-case or critical orientation,producesthe worst-case or critical sensitivity setting for a specificdetector.The group shall comprise one or mo
13、re objects whichare to be detected under the same detector settings.3.1.5 critical test pointlocation within the passage open-ing of a detector portal which produces the weakest signalresponse(the critical sensitivity)for the critical test object at itscritical orientation.3.1.6 detectorsynonym(used
14、 in this practice for brevity)for a walk-through device for detecting weapons such asdefined in 3.1.14.3.1.7 discrimination ratioexpression of a detectors abil-ity to discriminate between a weapon and innocent personalpossessions;it is the ratio of the signal generated by a critical1This practice is
15、 under the jurisdiction of ASTM Committee F12 on SecuritySystems and Equipmentand is the direct responsibility of Subcommittee F12.60 onControlled Access Security,Search,and Screening Equipment.Current edition approved May 1,2010.Published May 2010.Originallyapproved in 1993.Last previous edition ap
16、proved in 2004 as F1468 04a.DOI:10.1520/F1468-04AR10.2Available from Institute of Electrical and Electronics Engineers,Inc.(IEEE),445 Hoes Ln.,P.O.Box 1331,Piscataway,NJ 08854-1331,http:/www.ieee.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 test object to the signal generated by an assortment of innocentpersonal possessions(see Section 8).3.1.8 electrical influence test probeair-core coil for creat-ing electromagnetic fields th
