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用普通的流量测量技术来测定处于稳态高压力下的大质量流量时,由于多级连续而会产生测量不确定度。这里所谓的连接级数日可理解为使用的传递标准器数,而传递标准就是指连接到基本标准器上去的测量链。本文就测量仪与基本标准器进行单级连接的可行性作了理论探讨。从而,一方面改进标准测量法的测量技术,另一方面是减少测量不确定度。图1为
When using conventional flow measurement techniques to determine the mass flow rate at high steady-state pressures, measurement uncertainty arises due to the multi-level succession. The so-called connection series days can be understood as the number of delivery standard, and the delivery standard refers to the measurement chain connected to the basic standard. This paper makes a theoretical discussion on the feasibility of single-level connection between measuring instrument and basic standard instrument. Thus, on the one hand, the measurement techniques of standard measurement methods are improved, on the other hand, the measurement uncertainty is reduced. Figure 1 is