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| Research on the Temperature Standard for the Thermometer Sensor Pair of Heat Meter |
| QIU Ping,XIE Li,WANG chi |
| National Institute of Metrology, Beijing 100013 |
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Abstract Temperature standard instruments are studied for the temperature sensor pair of heat meter. Two grade B industrial platinum resistance thermometers (IPRTs) are tested. The experiments showed that the stability of high precise IPRT is 3 mk in the temperature range from 0 ℃ to 90 ℃ per year.The resistance drifts of the IPRTs were eliminated by using W value calculation and the accuracy of the calibration is improved.
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［1］国家质量监督检验检疫总局,JJG 225-2001 热能表检定规程［S］.2001
［2］国家质量监督检验检疫总局,JJG 229-2010 工业铂、铜热电阻检定规程［S］.2011. |
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2011, Vol. 32 
