Range to 600 ºC Meets all ITS-90 requirements for resistance ratios Rtp drift < 20 mK after 500 hours at 600 ºC Strain-free sensor design The 8508A-PRT Secondary Standard PRT Temperature Sensor 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 660 ºC Nominal RTFW 100 Ω (+ 1 Ω) Calibration uncertainty + 0.015 ºC @ 661 ºC Sensitivity 0.4 Ω/ºC Drift rate < 0.03 ºC/ 500 hours at 600 ºC Stability + 0.003 ºC Protective sheath Iconel™ 600 0.25” dia X 15” L (6.35 mm x 381 mm) 型号名称描述  8508A-PRT  铂电阻温度计