Linear Position Sensor Lowers Service Needs and Improves Automation Performance

  • December 06, 2021
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Linear Position Sensor Lowers Service Needs and Improves Automation Performance
Linear Position Sensor Lowers Service Needs and Improves Automation Performance

With the recent update of the Gemco 956 eBlok linear position sensor, AMETEK Factory Automation has strengthened the product offering for the automation industries. The new Gemco 956 eBlok is a Rod & Barrell style package that simplifies installation, serviceability and improves performance and price without affecting quality.

Suits existing and new automated manufacturing machinery

The launch of Gemco 956 eBlok is excellent news for design engineers and owners of plastic molding machines and other automated manufacturing machinery that experience daily continuous repetitive motion.  The design of the 956 eBlok enables it to work flawlessly in applications with high temperatures and repetitive movement. The linear position sensor withstands high levels of shock & vibration, and the housing provides excellent protection of the electronics inside from dirt, chips, or other containments.

The 956 eBlok is a self-contained unit with no head assembly. The streamlined anodized aluminum extrusion houses the sensing element, electronics, and sensing magnet in a Rod & Barrel style package. The magnet assembly of the linear position sensor is enclosed in the extrusion and attached via a bearing assembly to the piston rod. As the piston rod extends and retracts, the internal magnet moves over the sensing element determining its position and converting the signal to an analog output.

Blake Cawley, Product Manager," Traditional linear potentiometers are contact-type devices that drift with temperature. This type of linear position sensors is prone to wear and breakdowns, especially when exposed to containments or ongoing repetitive movement in applications like plastic molding machinery and other automated manufacturing machines.

Our experience working with the automation industry has clearly shown the need for a high-performance, cost-effective linear position sensing solution designed for applications that often choose traditional linear potentiometers for position monitoring. This knowledge is why we offer position measurement with no wear and tear,  an absolute analog position, and repeatable to 0.001% of the programmable sensing distance.

Even though the price is very competitive, we have kept popular features like Programmable Zero and Span Points that allow adjusting the output to the exact requirements of the individual machine. We are also  still offering the Built-in diagnostics that notifies the host controller if the magnet signal is ever lost or if the automated machine has moved out of the programmed range."

Are linear position sensors worth the investment compared to linear potentiometers?

Accuracy, repeatability, and longevity are better in magnetostrictive linear displacement transducers compared to the potentiometers. But these types of linear position sensors have traditionally had higher price tags compared to potentiometers. So, many users and automation engineers pose a fair question: whether a linear position sensor is worth the money?

Gemco has succeeded in developing a cost-effective linear sensing solution. Gemco's 956 eBlok delivers the quality expected from Magnetostrictive linear displacement transducers. It outperforms linear potentiometers and other low-cost sensors in efficiency and longevity. Due to its limited need for service, and improved longevity, the Gemco 956 eBlok will offer a highly competitive ROI based on the instrument's life.

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