1、Designation: F 2343 08Standard Test Method forLivestock, Meat, and Poultry Evaluation Devices1This standard is issued under the fixed designation F 2343; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers test methods used to determinethe accuracy of electronic devices that evaluate composition orquality constitue
3、nts of livestock, meat, and poultry.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the us
4、er of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2F 2463 Terminology for Livestock, Meat, and PoultryEvaluation Systems2.2 NIST Standard:3NIST Handbook 44 Electr
5、onic Livestock, Meat, and PoultryEvaluation Systems and/or Devices3. Terminology3.1 For definitions relating to livestock, meat, and poultryevaluation systems, see Terminology F 2463.3.2 Definitions of Terms Specific to This Standard:3.2.1 error, ndifference between the “true” value of areference ma
6、terial and the indication received from an elec-tronic evaluation device or system.3.2.2 meat, nall edible products and edible by-productsharvested by the meat-packing industry.3.2.3 reference material, nphysical object used as a basisfor comparison or calibration.3.2.4 test, nprocedure for determin
7、ing a characteristic bydirect measurement.3.2.5 tolerance, nvalue fixing the limit of allowable erroror departure from true performance or value.3.2.6 value, measurement, ndata point or indication rep-resenting the outcome of a measurement or observation.4. Significance and Use4.1 Characteristics of
8、 livestock, meat, and poultry can beused to determine value. Devices have been and are currentlyunder development to evaluate these characteristics. The use ofthis test method will assist manufacturers, users, and regulatingauthorities to refer to uniform test methods to determine if thedevices are
9、accurate.5. Apparatus5.1 Reference materials may include, but are not limited to,test blocks to verify linear measurements for ultrasound andlinear probes, “phantom carcasses” to verify non-linear mea-surements used in devices that use magnetic energy absorption,photographic plates for visual imagin
10、g devices, or other meansto verify a characteristic.5.2 Manufacturers provide reference materials to use in theinitial setup and calibration of evaluating devices before use;these reference materials can be used as standards for ensuringaccuracy after they are verified and documented by an inde-pend
11、ent third party. Reference material shall be uniquelyidentified (for example, serial number) and retained for addi-tional testing and calibration to ensure the accuracy of thedevice as it is being used over time.5.3 Verification of the reference material requires: (1) thatthe reference materials sta
12、ted measurements are accurate (thisrequires that the error of the labeled measurements can not begreater than one-third of the smallest allowable error accept-able when the reference material is used to verify an evaluatingdevice), and (2) the reference material is an appropriate proxyfor the charac
13、teristic being evaluated by the device or system(the reference material is considered appropriate if it is hasbeen designed to be used as a reference material, and it is1This test method is under the jurisdiction of ASTM Committee F10 onLivestock, Meat, and Poultry Evaluation Systems and is the dire
14、ct responsibility ofSubcommittee F10.20 on Device Performance Criteria.Current edition approved April 1, 2008. Published April 2008. Originallyapproved in 2004. Last previous edition approved in 2007 as F 2343 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cu
15、stomer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http:/www.nist.gov.1Co
16、pyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.constructed to retain its characteristics for a reasonable periodof time under conditions of normal use).6. Calibration and Standardization6.1 Reference MaterialThe user is responsible for
17、 ensur-ing that all reference materials used to test its evaluating devicehave been verified as accurate by an independent third party.The frequency of this verification shall be every two years orless.6.1.1 When an evaluation device or system is being cali-brated at initial setup or adjusted after
18、it has been found to beout of tolerance, the user shall ensure that the device is adjustedas close as practicable to the indications of the referencematerial.7. Procedure7.1 The production daily test for evaluating devices requirea minimum of three readings from each third of the normaloperating ran
19、ge of the device.7.2 Autofom Test Procedures:7.2.1 Transducer Test:7.2.1.1 Dry the transducer array so that no water is left.7.2.1.2 Test function is activated on the control panel.7.2.1.3 Wait 1 min to check that none of the transducers arestarting automatically.7.2.1.4 Put some gel on the test blo
20、ck (reference material).7.2.1.5 The transducer is checked with the test block.7.2.1.6 Remove gel from transducer.7.2.1.7 Repeat 7.2.1.4-7.2.1.6 on all 16 transducers. Taketen measurements with the test block for each requiredmeasurement on each transducer.7.2.2 After each transducer test, the result
21、s will be recorded.At the end of a test series, the latest result from each transducerwill be written on the last line. If a transducer is approved morethan nine times, an “X” will indicate ten or more approvedtests.7.2.3 Acomplete test of the transducers requires that the testblock be correctly pla
22、ced on each transducer. It is importantthat the test block rest on the whole surface on the transducerhead with light pressure. When starting the test, all transducersmust be “0”. If this is not the case, the transducer might bebroken (wait approximately 1 min after activation of the testfunction).
23、If a transducer is defective, then the display willshow no results.7.2.4 Verify that all measurement errors are within NISTHandbook 44 or this test method, as applicable.7.3 Fat-o-Meater Test Procedures:7.3.1 Push the morning control button.7.3.2 Take ten measurements with the test block (referencem
24、aterial) for each required measurement (see 6.1 and 7.1).7.3.3 Record test results.7.3.4 The measurement results can be cancelled by pushingthe pistol button or accepted by pushing the morning controlbutton on the terminal. When the morning control button isactivated, no transmission is sent to the
25、scale terminal.7.3.5 Verify that all measurement errors are within NISTHandbook 44 or this test method, as applicable.7.4 UltraFom Test Procedures:7.4.1 Press the key twice and select “Test” from the mainmenu.7.4.2 Press * and select “Test”.7.4.3 Put water on the test block (reference material).7.4.
26、4 Hold the test block to the sensor.7.4.5 Record the displayed results.7.4.6 Repeat 7.4.3-7.4.5 a total of ten times for eachrequired measurement.7.4.7 Data is automatically recorded.7.5 CVT Test Procedures:7.5.1 Apply fine spray of water on test block, referencematerial, and transducer standoff cov
27、er.7.5.2 Place transducer on test block.7.5.3 Be sure that the surface of the test block is set at zero.Reset baseline if necessary.7.5.4 Press trigger to make a measurement.7.5.5 Repeat the steps in 7.5.1-7.5.4 a total of 10 times.7.5.6 Measurements are automatically displayed and re-corded.7.5.7 V
28、erify that all measurement errors are within NISTHandbook 44 or this test method, as applicable.8. Precision and Bias8.1 The tolerance for evaluating devices which make linearmeasurements of characteristics will be 61mm(60.039 in.)for each characteristic measured.8.2 The tolerance for evaluating dev
29、ices which make areameasurements of characteristics will be 61.6 cm2(60.25 in.2)for area.9. Keywords9.1 evaluation devices; livestock; meat; poultry; referencematerialASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin th
30、is standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must b
31、e reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theres
32、ponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F2343082
