本文在研究胶料匀合机运动规律的基础上,提出了一种结构简单、可靠、实用的检测运动间隙的测试方案。叙述了该间隙测量仪的工作原理和仪器中聚焦型涡流传感器、电子线性化器、数字显示、打印记录和编号等主要单元电路的设计原则和部份计算。最后给出了仪器在现场考核的结果。 In this paper, based on the study of the movement law of the plastic material homogenizer, a simple, reliable and practical test scheme for detecting the motion gap is proposed. The working principle of the gap measuring instrument and the design principle and partial calculation of the main unit circuits such as focusing eddy current sensor, electronic linearizer, digital display, printing record and numbering are described. Finally, the result of the instrument assessment in the field is given.