Linear Transducer and Linear Position Sensing Technology

In a highly industrialised world, many industries depend on the use of machine to perform functions that would have been impossible manually. The innovations in engineering has paved way for a more developed way of life across the globe. The optimum efficiency of machines depend on each individual p

In a highly industrialised world, many industries depend on the use of machine to perform functions that would have been impossible manually. The innovations in engineering has paved way for a more developed way of life across the globe. The optimum efficiency of machines depend on each individual part working seamlessly. A significant functionality of most machines used in industrial applications is the ability to convert mechanical motions into electric signals. This is accomplished through a linear transducer or linear position sensors.

In the past, the use of linear sensors were limited because of the cost entailed with manufacturing this device. The development of less expensive microelectronics paved way for a broader industrial use of a linear position sensor. These microelectronics also made it possible to house the processing functions within the sensor itself, hence, the development of smaller more compact versions. In addition to this, linear sensors are not able to produce digital outputs thus allowing for compatibility with computer systems. The automation of machines make it possible for industries to monitor performance and improve results.

Primary Uses of Linear Transducer or LVDT's

With linear transducers versatility and durability, it is ideal for most industrial applications such as hydraulics. In the past, linear sensors did not have the ideal stroke to length ratio for hydraulic applications. Changes in techniques used for winding has paved way for linear sensors to be used in hydraulic cylinders. It can be installed within the cylinder or in some cases mounted outside the cylinder.

Linear transducer and most linear sensors are widely used in the petroleum industry. It is largely due to its ability to perform in harsh environments. It is used to control position and send feedback from drilling equipment. Many of Positek's linear position sensor products can withstand extreme depths and high temperature.

While it is common to assume that sensors are primarily used in large industrial applications, there are other practical uses for sensors that are often overlooked. One example is in ATM machines where a sensor helps ensure that the right amount of money is dispensed. It also lends well in aircraft applications, space and satellite lenses, as well as in factories manufacturing all kinds of products.

Linear Position Sensor Types

To say that there are several kinds of linear position sensors is a gross understatement. There is a wide variety of options available for buyers depending on specific parameters. There is not one type of sensor that can fit all kinds of applications. Specifications are important to ensure accuracy and fit. Here are the different types of sensors in use today:

• Inductive sensors- This type of sensor is non-contact and functions by measuring change in inductance of the sensing coil when a non-magnetic spoiler is passed over it. The change of inductance is then converted in to a DC voltage or current output.
• Capacitance sensors- This type of sensor is non-contact and functions by measuring the difference in voltage applied between the sensor and the target.
• Eddy current sensors- Unlike other sensors, this type of sensor consists of two coils. One of the coils is affected by the conducting target, and the other coil works to complete a bridge circuit in order to produce temperature compensation.
• Photoelectric sensors- The primary specification of this sensor is to use the projection and detection of light in order to measure displacement.
• Ultrasonic sensors- Similar to photoelectric sensors but instead of using light, this uses the projection and detection of sound.
• Linear potentiometers- This type of sensor measures displacement by producing a resistance output in proportion to an object's position.

There are other parameters that help in narrowing down the specifications of a sensor in order to fit the application. Buyers should know the measurement range, type of measurement required, the type of hazardous environment the sensor will be subjected to, as well as selling and intrinsic safety requirements. With Positek's built in parameter filter, buyers can narrow down the inventory in order to find exactly what they are looking for.

Since Positek has a wide range of sensors available in their inventory, a buyer is likely to find what he is looking for. With over 25 years of experience in the manufacture and distribution of position sensors, you can rely on Positek to deliver highest quality custom position sensor technology. They also offer the option of customisation in the event that you're unable to find what you're looking for in their current inventory of products.