Measure temperatures as high as 661 ºC Inconel™ and platinum sheaths guard against contamination Less than 10 mK/year drift Fifth wire provides shield ground The 8508A-SPRT Extended Range Metal-Sheath SPRT has been designed and manufactured by the primary standards metrologists at Hart Scientific, a Fluke Company, to complement the Fluke 8508A Reference Multimeter’s precision PRT temperature function. Temperature range -200 ºC to 661 ºC Nominal RTFW 25.5 Ω (+ 0.5 Ω) Calibration uncertainty 2.1 mK @ 660 ºC Sensitivity 0.1 Ω/ºC Drift rate < 10 mK per year max. 2-3 mK per year typical Stability + 0.003 ºC Protective sheath Iconel™ 600 0.219” dia X 19” L (5.56 mm x 482 mm) 型号名称描述  8508A-SPRT  标准铂电阻温度计