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Identify the zero-crossing zone of a precision conductive plastic potentiometer

Time: 2019-10-24 09:21 Author: admin Hits: Times

Precision conductive plastic potentiometers are widely used sampling sensors. It has high life, high linearity, high resolution and high smoothness. It is widely used in industrial automation, electric actuators, precision instruments and machine tools. How to identify the zero-crossing area of a precision conductive plastic potentiometer?

360 ° arbitrary rotation has high linearity. The potentiometer has a dead zone with a dead zone range of 340 ° ± 20 °. In this way, there will be no resistance value in the interval of 20 ~ 40 °.

When the sampling circuit does not receive the resistance signal at this time, the signal will transition, which will cause the system to be unstable.

No ticks and hands. The dead zone must be between terminals "1" and "2". During rotation, we cannot see the specific position of the potentiometer. We don't know if we need to be somewhere in the work area or in the dead zone. This made our on-site commissioning very messy.

Add a pointer on the top surface of the potentiometer, so that the dead zone and working area of the potentiometer can be clearly identified, and it is well recognized during user debugging.

Precision conductive plastic potentiometer

The above situation can also be identified by adding an on-site digital display debugger for electric actuators. During full valve opening and closing, the actuator is energized and commissioned.

Observe the digital display of the field debugger. If the linear change of the number on the meter indicates that the potentiometer is in the working area, if the number on the watch suddenly jumps, the potentiometer is in the dead zone and the potentiometer should be readjusted.

It automatically recognizes the working area of the potentiometer, then linearly corresponds to 0 ~ 100%, and then displays it on the LCD display through black bars, which is more convenient and intuitive.

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