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TO 00-20-14 30 SEPTEMBER 2011 - Wright-Patterson Air Force Base

TO 00-20-14 30 SEPTEMBER 2011 - Wright-Patterson Air Force Base

TO 00-20-14 30 SEPTEMBER 2011 - Wright-Patterson Air Force Base

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<strong>30</strong> September <strong>20</strong>11 <strong>TO</strong> <strong>00</strong>-<strong>20</strong>-<strong>14</strong>NATIONAL MEASUREMENT STANDARDAIR FORCE MEASUREMENT STANDARDSAIR FORCE PRIMARYAFPSL WORKING STANDARDS STANDARDS LABORA<strong>TO</strong>RYTRANSFER STANDARDS(AFPSL)BASE MEASUREMENT STANDARDSWORKING STANDARDSPRECISION MEASUREMENTEQUIPMENT LABORA<strong>TO</strong>RY(PMEL)TMDEUSERPERFORMING WORK CENTERSUPPORT EQUIPMENTMISSION EQUIPMENTFigure 1-2. Measurement Traceability Of The <strong>Air</strong> <strong>Force</strong> Metrology And Calibration Program.1.4.19 Measurement or Reference Standards. Equipment by which the accuracy and traceability of a precisionmeasurement is derived. The typical chain of measurement standards is shown in Figure 1-2. The following are typesof standards:a. <strong>Air</strong> <strong>Force</strong> Measurement Standards. Equipment certified by NIST or other AFMETCAL approved sources.These standards are used by the AFPSL as a basic measurement reference for the <strong>Air</strong> <strong>Force</strong>.b. <strong>Air</strong> <strong>Force</strong> Primary Standards Laboratory (AFPSL) Working Standards. TMDE certified by the AFPSL and usedto calibrate other TMDE.c. <strong>Base</strong> Measurement Standards. Equipment certified by the AFPSL or AFMETCAL approved sources. Thesestandards are used by an <strong>Air</strong> <strong>Force</strong> PMEL as a measurement reference. <strong>Base</strong> Measurement Standards aredesignated in <strong>TO</strong> 33K-1-1<strong>00</strong>-2.d. Exchange Standard. A calibration standard calibrated by the AFPSL through a calibrate and replacemethodology to minimize PMEL down time. An exchange standard is calibrated by the AFPSL and sent to aPMEL to replace a like base measurement standard before its calibration has expired. The exchange standardwhose calibration interval is expiring is returned to the AFPSL for calibration, then forwarded to another PMEL.The PMEL is responsible to fund shipping costs to return exchange standards to the AFPSL. <strong>TO</strong> 33K-2-11,Detailed Instruction and Information Pertaining to <strong>Air</strong> <strong>Force</strong> Primary Standards , Laboratory CalibrationExchange Standards, and Artifact Proficiency Testing Standards, PMELs Only, contains detailed instructionsand information for Exchange Standards.e. National Measurement Standards. Equipment or physical constants identified and normally used by NIST.These standards serve as a basic measurement reference for use throughout the United States and at U.S.installations/activities overseas.1-5

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