Conductive plastic potentiometers (also known as electronic rulers) are widely used in automobiles, injection molding machines, wood processing machines and modern different industries. Conductive plastic potentiometers are relatively cheap, output changes at low temperatures are small, low torque operation and high-speed applications are unique features of conductive plastic technology.
1.Simple structure, small size, light weight, affordable, but with stable and high precision quality.
2.Less impact generated by the environment (Such as temperature, humidity, magnetic interfere etc).
3.Any function of input and output can be implemented.
4.Strong output signal, normally no need to additional amplifier.
5.Suitable for the condition which any optical rule or rotary encode can not be used.
6.Easily installing and maintaining.
7.Save mechanical costs about 30%
The function of the conductive plastic potentiometer is to convert a mechanical displacement into an electrical signal, and the signal can be proportional to the mechanical movement. The brush assembly is connected to the mechanical exciter, which in turn causes the plastic rail to produce a voltage divider. Both ends (1, 3) of the potentiometer’s resistance rail are connected to a stable DC voltage (small current allowed). When measuring between the brush and the modified resistance rail, the signal voltage is the main part of the voltage divider and is proportional to the position of the brush on the resistance rail. As a voltage distributor, the conductive plastic potentiometer does not need to focus on the accuracy of the total resistance on the resistance rail, because temperature fluctuations only affect the resistance and will not affect the measurement results.
3. Incentive unit
4. Alignment bearing
1. Required accuracy and linearity
2. Expected range
3. Repeatability / resolution
4. Required torque (low)
5. Environment, vibration, dust temperature, humidity
6. Require speed and price and life expectancy
Such sensors are commonly used in different fields: automobiles, medical equipment, robotics, wood processing machines, mold making machines, building materials (stone) processing machinery, injection molding machinery, etc.
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