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在海洋测温仪器和海洋测温仪器鉴定设备上所使用的温度计探头,多数为精密铂电阻温度计,其零度时电阻为100Ω,测温范围比较窄,一般为-2℃～30℃。如何在窄温度范围内对精密铂电阻温度计进行分度,我们进行一些探讨,并进行了试验。用于分度的精密铂电阻温度计带有四根引线,其R_0值为100Ω。温度计的外壳是陶瓷封装,其直径为4毫米,长度为50毫米,共有三支。把被分度的精密铂电阻温度计放到三相点瓶中,测出R_0值,然后与标准铂电阻温度计同时放入液体恒温槽中,用比较的方法测定其Rt阻值。在1℃～20℃之间每隔5℃或
Thermometers used on marine thermometers and marine thermometers are mostly precision platinum resistance thermometers with a resistance of 100Ω at zero and a narrow temperature range of -2 ° C to 30 ° C. How to scale the precision platinum resistance thermometer in a narrow temperature range, we have carried on some discussions and conducted experiments. The precision platinum resistance thermometer used for indexing has four leads with an R_0 value of 100Ω. Thermometer housing is a ceramic package, the diameter of 4 mm, a length of 50 mm, a total of three. The indexed precision platinum resistance thermometer into the three-phase point bottle, measured R_0 value, and then with the standard platinum resistance thermometer into the liquid bath, with a comparative method to determine the Rt resistance. Between 1 ℃ ~ 20 ℃ every 5 ℃ or