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| A New Automatic Measurement System for Testing Weighing Instruments |
| WANG Jian,ZHONG Rui-lin,CAI Chang-qing,ZHANG Yue,DING Jing-an,YAO Hong,WANG Xiao-lei |
| National Institute of Metrology, Beijing 100013, China |
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Abstract To meet the test requirements of recommendation OIML R76 about non-automatic weighing instruments, an automatic measurement system on weighing instruments is designed. The operators of the system can perform type evaluation tests of weighing instruments which maximum capacity are from 50 kg to 3000 kg by means of mass standards combined automatically at random. The system includes automatic loading and unloading function without impact and adhesion. Therefore type evaluation tests of weighing instruments with the maximum capacity from 50 kg to 3000 kg such as indication error test, repeatability test, tare test, static temperature test and damp heat test can be finished automatically by the system. The system can solve the problem that type evaluation test of weighing instruments with the maximum capacity above 50 kg is hardly performed by means of personnel. The experimental results show relative uncertainty of the system is not more than 5×10-6.
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［1］International Recommendation OIML R76-1 Edition 2006(E), Non-automatic weighing instruments ［S］. 2006.
［2］International Recommendation OIML R50-1 Edition 1997(E), Continuous totalizing automatic weighing instruments ［S］. 1997.
［3］王健,姚弘,张跃,等. 砝码磁化率对质量测量过程的影响［J］. 计量学报,2009,30（6）:539~542.
［4］王肖磊,王健,钟瑞麟,等. 砝码质量测量中的空气密度测量装置的研究［J］. 计量学报,2011,32(1):40~43.
［5］International Recommendation OIML R61-1 Edition 2004(E), Automatic gravimetric filling instruments ［S］. 2004.
［6］International Recommendation OIML R107-1 Edition 2007(E), Discontinuous totalizing automatic weighing instruments (totalizing hopper weighers) ［S］.2007.
［7］International Recommendation OIML R134-1 Edition 2006(E), Automatic instruments for weighing road vehicles in motion and measuring axle loads ［S］.2006.
［8］国家质量监督检验检疫总局 JJG99-2006,砝码检定规程［S］.2006
［9］国家技术监督局 JJG555-1996,非自动秤通用检定规程［S］.1996. |
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2012, Vol. 33 
