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离心式转速表是一种使用较早的转速表。尽管它的测量精度比较低,且不适用于非接触测量,但由于造价低、使用方便,在测量精度要求不高的场合,仍然得到广泛的应用。这种类型的转速表,按其离心器的形式可分为重锤形和圆环形两种,按使用方式,可分为手持式和固定式两种。常见的手持式离心转速表是多量程的,固定式则仅有一个量程。两种转速表,除齿轮变速系统外,结构原理基本相同,而且固定式比手持式更简单。现对具有
Centrifugal tachometer is an earlier use tachometer. Although its measurement accuracy is low, and not suitable for non-contact measurement, but due to low cost, easy to use, less demanding in the measurement of the occasion is still widely used. This type of tachometer, according to the form of its centrifuge can be divided into heavy hammer and torus two, according to the use of methods can be divided into two kinds of handheld and fixed. Common hand-held centrifugal tachometer is multi-range, fixed only one range. Two kinds of tachometer, except gear transmission system, the basic principle of the same structure, and fixed than the hand-held more simple. Right now