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在各种測量仪表的設計中,設計的出发点总是力图获得測量的灵敏度高、精确以及測量的滞后时間小。在成分分析仪器中尚有另外一个十分重要的质量指标——选择性,对选择性的要求也是愈高愈好[1][2]。实現上述要求的途径主要有两方面,其一是从測量原理着眼,即选择适当的測量原理,另一个办法則是在原理已經确定的前提下,从仪表的結构以及結构参数上打主意,寻求最佳的条件。
In the design of various measuring instruments, the starting point of the design is always trying to obtain the high sensitivity of the measurement, the precision and the small lag time of the measurement. There is another very important quality indicator in the component analysis equipment - selectivity, the higher the selectivity requirements [1] [2]. There are two main ways to achieve the above requirements. One is to focus on the principle of measurement, that is, select the appropriate measurement principle. The other method is to find out the structure and structural parameters of the instrument based on the principle that the principle has been determined Best condition