The accuracy calculation method of the wire-drawn displacement sensor is as follows:

1. The accuracy of the wire-drawn displacement sensor with the potentiometer as the measuring element is related to the potentiometer. The potentiometer can have an accuracy of 0.3%, 0.15%, 0.1%, etc., plus the eccentricity of the wire wheel (±0.02mm). If it is a current output, there is also a voltage/current conversion error and assembly error. The actual accuracy is difficult to be equal to the potentiometer. You can add 0.05% to the accuracy of the potentiometer and use this as a basis to give the customer parameters.

2. The accuracy of the wire-drawn displacement sensor with the encoder as the measuring element is well calculated. Commonly used encoders have 3600 and 5000 pulses per revolution. If the customer requires a resolution of 0.05mm, if a 3600-line encoder (an encoder with 3600 pulses per revolution) is selected, the stroke per revolution should not exceed 180mm, which is converted into the diameter of the wire wheel (180/3.1415926)-0.7 or 1=56.59 or 56.29mm. A standard wire wheel of 56mm can meet the customer's requirements. Of course, if the customer requires a long stroke and a large wire wheel, a 5000-line encoder should be selected, and the resolution should be calculated. Note that you should not think that you can choose encoders with more lines. There are encoders with 10,000 lines above 5000 lines, which are very expensive, reaching tens of thousands of yuan. It is not cost-effective to use them, so they are generally not selected.