| 重量法配气的称量数学模型及其不确定度评定 |
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| 引用本文： | 曹志刚,王德发,吴海. 重量法配气的称量数学模型及其不确定度评定[J]. 化学分析计量, 2010, 19(1): 11-14 |
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| 作者姓名： | 曹志刚 王德发 吴海 |
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| 作者单位： | 中国计量科学研究院,北京,100013;中国计量科学研究院,北京,100013;中国计量科学研究院,北京,100013 |
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| 基金项目： | 中国计量科学研究院支持的基础科研项目 |
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| 摘 要： | 对重量法制备气体标准物质中充入气体质量的计算方法进行了研究,建立了基于单盘电子天平的钢瓶称量方法,并建立了系统的数学模型和不确定度评价方法。为重量法制备气体标准物质提供一种简单、实用和精确的钢瓶称量方法和气体加入质量的计算方法。
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| 关 键 词： | 重量法 称量 气体标准物质 不确定度 |
MATHEMATICAL MODEL AND UNCERTAINTY EVALUATION METHOD FOR PREPARATION OF GAS MIXTURE BY GRAVIMETRIC METHOD |
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| Cao Zhigang,Wang Defa,Wu Hai. MATHEMATICAL MODEL AND UNCERTAINTY EVALUATION METHOD FOR PREPARATION OF GAS MIXTURE BY GRAVIMETRIC METHOD[J]. Chemical Analysis And Meterage, 2010, 19(1): 11-14 |
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| Authors: | Cao Zhigang Wang Defa Wu Hai |
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| Affiliation: | Cao Zhigang, Wang Defa, Wu Hal (National Institute of Metrology, Beijing 100013, China) |
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| Abstract: | A new method to calculate the gas mass filled into the cylinder in preparation of gas reference materials by gravimetric method was reported. This weighing method was based on the substitution weighting of reference cylinder and sample cylinder on the electric comparator balance. The mathematical model and uncertainty evaluation method were established. Weighing and calculation methods were able to be used to calculate the gas mass added into the sample cylinder, simply, conveniently and precisely, when gas reference standard being prepared by gravimetric method. |
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| Keywords: | gravimetric method weighing gas reference material uncertainty |
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