What is Linear Displacement?

AlisonM 17/06/2019 0

What is Linear Displacement?

Linear Displacement can be defined as the movement of an object in a straight line along a single axis – up and down or side to side.

Linear Displacement is often a movement which requires measurement and can be measured in either inches or millimetres using linear position sensors. Many of the products we offer measure linear displacement.


Linear Displacement Examples 

Linear Displacement is present in almost any environment and is very often in need of measurement in the following;

·        Instrumentation and Test

·        Robotics

·        Automation

·        Machine Tools

·        Mobile Vehicle

·        Agricultural Machinery

·        Suspension Measurement

And many other areas.

In the past, our products have been used to measure o rmonitor linear displacement in the following applications;

Paper Machines – Our P101 linear sensor was selected as a hard wearing solution to a harsh environment to measure the roller attitude and relay the information to the control system.

Bakery Machines –Our P103 linear sensors has been used within bakery machines to ensure that dough is rolled to the correct thickness.  

Forestry LoggingMachines – Our P106 was selected as a small linear sensor to fit into a tight space within the machinery to monitor the hydraulic controls within the hydraulic cylinders.


Linear Displacement Measurement Devices and Technologies 

There are different kinds of linear position sensors used to measure linear displacement; different types of technology are better suited to certain applications. To help select the best sensor for you, contact usto discuss your application.

Potentiometric Position Sensors - Also called a Pot, short for Potentiometer, one of the most common types of position sensor. Potentiometers use a sliding contact on a resistive track to measure the position of the slider which is connected to themoving component.

Capacitive Transducers - The relative position of moving parts is measured by the capacitance between two or more elements.


Eddy-Current Linear Displacement Sensor– these are a type of inductive sensor which uses Eddy-Current formation to detect linear movements. The movement of a component affects the losses within the conductor, which provides a measure of the displacement.

LVDT sensors - These are a type of non-contacting linear sensor, they have infinite mechanical life as they arewear-free. They have an iron core which is moved within the input windings to affect the signal in the two output windings. The difference between the two outputwindings defines the position.

Positek Inductive sensor technology – Our own sensor range has some similarities with LVDT sensors as they are non-contacting and have the friction free long life that you would expect.They operate at high frequency and have simple single layer coils of robust wire.

The overall length is only a little longer than the range of movement which means they take up less space than an LVDT for the same range of motion.They do not measure losses in the coil but instead measure the change in inductance and reject loss changes. This results in a sensor that is inherently temperature stable. The frequency response is high, making them useful in fast servo loops due to the lack of phase shift in the signal. 


Linear Position Sensors and Transducers from Positek

Take a look at our extensive range of Linear Position Sensors here which are suitable for measuring linear displacement.

Our Linear Position Sensors;

·        Have added reliability than that of LVDTs

·        Have improved stroke to length ratio than LVDTs

·        Are well suited to applications in tight spaces

·        Are extremely robust and highly accurate

·        Have options for intrinsically safe and hazardous area certifications  

·        Fast Delivery – sometimes as short as just 2 days   

See more about linear position sensors here

Take a look at our product range here

For more information on linear displacement or on any of the products in our range please contact us: +44(0)1242 820027 or sales@positek.com

Write a Comment