- October 31, 2024
Linear Potentiometer
A displacement potentiometer, also known as a linear potentiometer or a linear position sensor, is a device used to measure linear displacement (movement) in a variety of mechanical and industrial applications. It operates by converting the physical movement of an object into an electrical signal, typically used to monitor or control the position of that object.
How a Displacement Potentiometer Works?
The potentiometer consists of a resistive element and a movable contact (wiper). As the object moves, it changes the position of the wiper along the resistive element, causing a change in resistance. This change in resistance is then converted into an electrical output (typically a voltage) that is proportional to the object’s position.
Key Features:
- Analog Output: Commonly produces a voltage output proportional to displacement, which can be easily read by control systems.
- High Precision and Linearity: Offers high accuracy and linearity, making it ideal for applications requiring precise position control.
- Durability: Built for long-term operation in demanding environments.
- Simple Operation: Requires only basic electrical connections, making it easy to install and integrate.
- Range and Resolution: Available in a variety of measurement ranges, typically from a few millimetres to several hundred millimetres.
Applications:
- Robotics: For precise position measurement of robotic arms and mechanisms.
- Industrial Automation: Common in machinery for monitoring the movement of components.
- Automotive Systems: Used in throttle, suspension, and brake systems to monitor the position of pedals and levers.
- Medical Devices: Found in devices that require fine control of movement, such as X-ray machines or patient beds.
Types:
- Spring-loaded Potentiometers: MDP42 is a spring-loaded rugged potentiometric-based displacement sensor suitable for static measurement in harsh environments. This compact displacement sensor offers great flexibility and reliability for a wide range of applications with highly competitive pricing. MDP42 is available in measuring ranges from 10 to 100mm with a Voltage output, relative to supplied input voltage. The spring-loaded potentiometer shaft is running in a precision bearing and this potentiometer is suitable for accurate industrial displacement measurements. It has the option of having a hemispherical tip or a roller ball depending upon the application requirements. Standard Nonlinearity of this sensor is ±0.1% FS. The robust construction of MDP42 with its high performance makes it ideal for demanding long-term applications.
- Rod-Type Displacement Potentiometers: A direct-contact design where the rod slides within the potentiometer housing as the object moves. MDP41 series with rod end connection is a rugged potentiometer-based displacement sensor suitable for static measurement in harsh environments. This compact displacement sensor offers great flexibility and reliability for a wide range of applications with highly competitive pricing. MDP41 is available in measuring ranges from 50 to 600mm with a Voltage output (relative to supplied input voltage). It is suitable for industrial measurements that require non-lateral movement or quick installation. Standard Nonlinearity is ±0.1% FS for 50-150mm and ±0.05% FS for 150-600mm.
Displacement potentiometers are valued for their straightforward design, high reliability, and compatibility with a wide range of applications where accurate position feedback is essential. MeasureX offers customised linear potentiometers if the standard sensors do not meet clients’ requirements. Our technical team will suggest a suitable sensor based on your requirements with long service life and reliability. Please contact our sales team at sales@measurex.com.au or visit our website for further information about displacement sensors offered by MeasureX
