【英文标准名称】:StandardPracticeforDescribingandMeasuringPerformanceofUltraviolet,Visible,andNear-InfraredSpectrophotometers
【原文标准名称】:说明和测量紫外线,可见和近红外线分光光度计的性能的标准操作规程
【标准号】:ASTME275-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:E13.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:测量技术;分析;分光光度计
【英文主题词】:molecularspectroscopy;near-infraredspectrophotometers;spectroscopy;ultravioletspectrophotometer;visiblespectrophotometer;
【摘要】:Thispracticepermitsananalysttocomparethegeneralperformanceofhisinstrument,asheisusingitinaspecificspectrophotometricmethod,withtheperformanceofinstrumentsusedindevelopingthemethod.1.1ThispracticecoversthedescriptionofrequirementsofspectrophotometricperformanceespeciallyforASTMmethods,andthetestingoftheadequacyofavailableequipmentforaspecificmethod.Thetestsgiveameasurementofsomeoftheimportantparameterscontrollingresultsobtainedinspectrophotometricmethods,butitisspecificallynottobeconcludedthatallthefactorsininstrumentperformancearemeasured.1.1.1Thispracticeisnottobeused(1)asarigoroustestofperformanceofinstrumentation,or(2)tointercomparethequantitativeperformanceofinstrumentsofdifferentdesign.1.1.2Thispracticeisprimarilydirectedtodispersivespectrophotometersusedfortransmittancemeasurementsratherthaninstrumentsdesignedfordiffusetransmissionanddiffusereflection.
【中国标准分类号】:N33
【国际标准分类号】:17_180_30
【页数】:10P.;A4
【正文语种】:


Product Code:SAE AS7251
Title:Nuts, Self-Locking, Steel, Corrosion and Heat Resistant High Strength, All Metal 1200 掳F Use, UNJ Thread Form
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: This document covers all metal, self-locking wrenching nuts, plate nuts, shank nuts, and gang channel nuts made from a corrosion and heat resistant steel of the type identified under the Unified Numbering System as UNS S66286 and of 160 ksi tensile strength at room temperature, with maximum test temperature of parts at 1200 degrees F. For use up to approximately 1200 degrees F where high strength nuts with UNJ thread form are required for use with standard MIL-S-8879 external threads.