Positek Linear Position Sensors

Experts in standard and custom linear position sensor design

Positek offers an extensive range of linear position sensors; an ideal non-contact alternative to a linear potentiometer, suitable for the detection of linear movement in a host of industrial applications.

Our linear position sensors provide all of the benefits of an lvdt, but with added reliability and improved stroke to length ratio. Unlike many lvdt sensors, our linear position sensors lend themselves well to confined spaces, and operate using a single coil which leaves them less vulnerable to common fractures and breakages.

Using Positek’s patented inductive sensor technology, our position sensors are extremely robust and highly accurate in their detection of linear movement, with stroke length measurements of up to 800mm.

Click here to see our full range of inductive linear position sensors

After the industrial revolution and at the beginning of the Second World War, linear position sensors were used only in laboratory measurements. These days, position sensors have become integral to industrial, mechanical, and research applications. Today, the modern linear position sensor can be found in the air, on the ground, underground, and even underwater as a feedback device.

New materials available for construction, engineering techniques as well as availability of more affordable microelectronics revolutionised linear position sensor technology. These days, LVDTs are more reliable and cost effective. In addition to this, external electronics have also been eliminated. Linear technology incorporates internal electronics which allows for more complex functions. DC operated LVDTs also produce digital outputs that are compatible with most computer-based systems. It is also noticeable that sensors have become more compact, yet maintaining a quality even surpassing that of previous technology.

Since sensors are now made using new construction materials, they can be built to withstand hostile environments with low and high extreme temperatures, vacuum pressure conditions, and radiation exposure. For example, there are linear transducer models that are hermetically sealed which can perform in extreme pressure conditions, even under seawater or corrosive acid.

Another example is the use of exotic alloys such as cobalt, nickel, and chromium. These allows allow the sensor to perform in the presence of corrosive compounds and extremely high temperature. All these different types of material opens up many possibilities in the versatility of linear sensor applications.

What Kind of Coil does the Linear Position Sensor Use?

A position sensor consists of a thin type inductive coil with a thin pattern guide. This makes it suitable for tiny space application. Most linear sensors are now compact and robust. Positek uses a patented non-contact technology in manufacturing linear sensors. Positek’s linear sensors consist of one coil which makes them less like to break or fracture.

Can you Customise Aspects of the Linear Position Sensor to my Needs?

Customisation is not always offered by most manufacturers of custom position sensor technology. With Positek, you get the added benefit of requesting the assistance of their engineering team to customise the specifications of the linear position sensor you need.

How Many Kinds of Linear Position Sensors does Positek Manufacture?

Positek offers a wide array of options in linear position sensors. You can narrow down your search from their extensive inventory depending on the type of movement, measurement range, measurement type, hazardous environment type, intrinsic safety required, and environmental sealing. Furthermore, Positek has an extensive inventory of submersible sensors, Cylinder Position Sensors, tilt sensors, and rotary sensors.

How reliable are Positek’s Linear Position Sensors?

Positek’s patented non-contact technology ensures that their position sensors are manufactured with the highest quality of materials and by using advanced methods. You can check the quality certifications awarded to Positek which serve as proof of their dedication to being a frontrunner in manufacturing and distributing position sensors.

There are a variety of technologies used to detect the movement and position of an object. Linear position sensors fall under this type of technology. These sensors have a specific design and function.

How do you distinguish and select the type of linear sensor to use?

The type of linear sensor is specific to an application. Industrial buyers should be able to determine which type of linear sensor best fits the required need.

  • Capacitance sensors. This is a non-contact type of linear sensor and works by measuring the difference in voltage applied between the sensor and its target. Capacitance sensors can either be used in conductive and non-conductive material but is sensitive to environmental parameters such as air.
  • Eddy current sensors. This is another non-contact type sensor consisting of two coils. One active coil is influenced by a conducting target, and another coil which completes a bridge circuit to provide temperature compensation.
  • Photoelectric sensors. This includes fibre optic, optical triangulation, and optical time of flight. This functions by using the projection and detection of light.
  • Ultrasonic sensors. In contrast with photoelectric sensors, this type of sensor works by using the projection and detection of sound.
  • Linear potentiometers. This type of sensor produces a resistance output which is proportional to an object’s position.

A linear position sensor is also available in different types of output. Each type of output also has advantages and disadvantages.

Output Type and corresponding Advantages and Disadvantages

  • Analog. The output is either in DC voltage or DC current. This is the most common type of position sensor used in industrial automation. Analog sensors are popular due to ease of implementation and troubleshooting. One disadvantage is susceptibility to electrical interference.
  • Time-based Digital. This type of sensor generates digital pulses that are separated by time. The time becomes the indication of position and is proportional to the object’s displacement. Some advantages of this output includes cost effectiveness and immunity to interference. On the other hand, it requires a specialised interface and may be difficult to troubleshoot.
  • Serial Digital. This type of sensor provides single stream outputs via digital protocols. This has built-in diagnostics and provides more information. Because it is more advanced, it also costs more.

Where can you find the best position sensors available in the market today? There is a wide variety of options available to any industrial buyer, but what makes Positek’s position sensors the best?

Positek’s position sensors cater to all kinds of mechanical and industrial applications. If you are looking for a submersible position sensor, Positek’s sensors offer unrivalled accuracy at depths of up to 3500 meters.

Does Positek offer a wide variety of position sensors?

Positek has an extensive inventory of linear position sensors, linear potentiometer, submersible linear sensors, and the like. What if the specifications you are looking for is not available in the current inventory? One question frequently asked by clients from Positek is “Do you make custom-made position sensors for different sizes?” Positek’s answer is absolutely! You can get in touch with the engineering team for assistance.

Regardless of what you are looking for, Positek can, and will find a way to cater to you. There is no doubt that excellent service is one of the main reasons why Positek has been in operation for over 25 years.

Positek’s sensor technology is highly flexible, enabling us to package any linear displacement transducer / linear position sensor in a wide range of body types. Though we have various off-the-shelf options available, we can also custom design to fit any application or specification required. 

If our standard range does not fulfil your requirements, please speak to one of our engineers about your custom linear position sensor design today

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