本文对二点源长探测器液位计的刻度曲线进行了实验研究。根据有关资料介绍

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，单点源长探测器液位计其输出信号与液位的关系是非线性的，为了将非线性关系变为线性关系可以采用线状源或多点源。考虑到线源和多点源的制作、运输、防护和使用不便，所以采用两个点源进行实验研究。实验结果，找到了比较满意的近似线性关系。

A long detector and two point radiation sources were used to study the character of the calibration curve of radioisotope liquid level gauges.

It has been found that

for a specific object to be measured

an approximately linear scale may be obtained by controlling the beam intensity and adjusting the position of the two sources.