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在球式体积管中,直接影响标准体积重复性指标的有以下因素:一是标准管段的管截面圆度及光洁度;二是置换器(球)的质量(比如置换器不圆度、过盈量、材质、硬度、弹性模数、耐磨、耐油的性能指标);三是检测开关的性能(自身结构的动作重复性)等。本文浅析检测开关性能与体积管流量装置性能的内在关联。球式体积管的检测开关一般由两部分组成:一是机械传递结构(置换器触发状态),有垂直伸缩位移量和水平角位移量两种;二是发讯探头,目前有光电式和光纤式两种。
In the sphere tube, the direct impact on the standard volume repeatability index has the following factors: First, the standard tube section of the tube roundness and smoothness; Second, the displacer (ball) quality (such as the displacer non-roundness, Volume, material, hardness, elastic modulus, wear resistance, oil performance indicators); Third, the detection switch performance (self-structure movement repeatability) and so on. This article analyzes the inherent relationship between switching performance and the performance of a volume tube flow device. Ball volume tube detection switch is generally composed of two parts: First, the mechanical transmission structure (displacement of the trigger state), the amount of vertical telescopic displacement and the amount of horizontal displacement of the two; send the probe, the current photoelectric and optical fiber Two types.