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      ???????>У????????>?????????FLUKE
    ?? ??λ???????????????? Fluke 8508A    
      ?????10440?Ρ?????

    ??λ???????????????? Fluke 8508A

     

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    ??λ???????????????? Fluke 8508A

     

    8.5λ????????
        8508A????????????????????????????200mV??1kV???????????????е???????????????е??????????????8.5λ?????????????????1nV????????佻???????????????? 1MHz??????????????????????????????????????8508A??????濪????-??????????????/???????????????????????????????????????????????????????????Ч???

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        8508A?????????????????????????????????????????????????????????????????????????????ζ????????????·?????????С?????????????????????ɡ?8508A????????????????????????????????????д???????????α?????????б????????????????????????á???????????????????в?????????
        8508A???????????????200mA??20A??????Χ??1Hz??100kHz??????????????в?????????????????У?????У?????????????????????

    ????????????
        ????????????2W??20GW?????????10nW???????????????????????????????????????200V???????????100mA????????????

    ?ο??????????????????????????????
        ????????????????????Χ??8508A??????2??3??4????????PRT??????????SPRT????????????????????Χ??-200?浽660?檔???????????????????????????????ITS-90??Callendar van Duesen???????????????????8508A?????????????????PRTУ??????????????????????????????????????????????????????????????????????
        ????????????????????????????????Χ?????????8508A?????????????????

    ?????????????????????????????????
        8508A?????????????????????????????????????????????????????????????????????????????似????????????????????????????????????????б?????????????????????????????????裬????л???????·???????????????У???????????????????????????????Ч????????

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        ??????????????Χ????????????????????8508A-SPRT??????????????????8508A-PRT????????????????????????????????????8508A?ο?????????????????????????????



            8508A-PRT/-SPRT

     

      ????

    ??λ???????????????? Fluke 8508A

     

    ???? ??????Χ 1??????? 1???????
    95%?????? 99%??????
    (ppm????+ppm????? (ppm????+ppm?????
    ?????? 0~199.999999mV 4.5+0.5 6.0+0.6
    0~1.99999999V 3.0+0.2 4.0+0.25
    0~19.9999999V 3.0+0.2 4.0+0.25
    0~199.999999V 4.5+0.2 6.0+0.25
    0~1050.00000V 4.5+0.5 6.0+0.6
    ??????? 0~199.99999mA 12+2.0 15+2.0
    0~1.9999999mA 12+2.0 15+2.0
    0~19.999999mA 13+2.0 16+2.0
    0~199.99999mA 36+4.0 45+4.0
    0~1.9999999A 170+8.0 210+8.0
    0~19.999999A 380+20 455+20
    ???? 0~1.99999999?? 1.5+2.0 19+2.5
    0~19.9999999?? 9+0.7 11.5+0.9
    0~199.999999?? 7.5+0.25 9.5+0.3
    0 ~ 1.99999999M?? 10+0.5 10.5+0.6
    0 ~ 19.9999999M?? 15+5 20.5+6
    0~199.999999M?? 60+5 75+6
    0~1.99999999G?? 150+50 195+60
    0~19.9999999G?? 525+500 675+600
    ??????? 0~199.9999mV 105+10 125+12
    0~1.999999V 65+10 75+12
    0~19.99999V 65+10 75+12
    0~199.9999V 65+10 75+12
    0~1050.000V 95+20 110+25
    ???????? 0~19.99999mA 280+100 340+120
    0~199.9999mA 250+100 305+120
    0~1.999999A 600+100 705+120
    0~19.99999A 800+100 900+120
    ??? 0~199.999999?? 7.5+0.14(0.002??) 9.5+0.18(0.002??)
    200~1999.99999?? 7.5+0.5(0.0025??) 9.5+0.6(0.0025??)

    ?? 8508A-SPRT 8508A-PRT
    ????Χ -200?浽661?? -200?浽661??
    ???RTPW 25.5??????0.5???? 100??????1????
    У???????? ?? ??661???????0.015??
    ????? 0.1??/?? >0.3925??/??
    ????? ??????< 10mK ??661?????< 30mK/500С?
    ?????????2-3 mK
    ????? ?? ??0.003??
    ???????? IconelTM 600 IconelTM 600
    ???0.219??? ?? ??19??磨5.56mm?? 482mm?? ???0.25??? ????15??磨6.35mm ??381mm??

     

      ????

    ??λ???????????????? Fluke 8508A

     

    ??? ???
    8508A ?ο?????????
    8508A/01 ?ο????????????????????4mm??????????????????
    ?? ??
    ??????? ???
    8508A-LEAD ?????????????2??1??6??ptfe???£?????????????????????4mm????
    8508A-PRT ????????????????
    8508A-SPRT ???????????????????
    Y8508 ?????????
    Y8508S ?????????????
    8508A-7000K 1G??????????У??????????

     

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