Premature Wear in Linear Potentiometers

Typical resistive linear potentiometers are especially vulnerable to performance degradation caused by wear to the resistive element. Since the measurement principle relies on mechanical contact between the resistive element and conductive wiper, mechanical wear can lead to erratic output signals and, utlimately, unreliable process control. The Micropulse BIW linear position sensor solves these problems by using a patented technology, which provides high performance and previously unattainable reliability. Its comparable mechanical form factor allows for hassle-free, drop-in replacement of linear pots. The BIW offers continuous analog voltage outputs and now analog current outputs. The advantage of the new current output is superior noise immunity and ability for much longer cable runs than the voltage versions.

Position Feedback on Cylinders

Hydraulic and pneumatic cylinders are often used as prime movers in industrial applications. In many of these applications, the capability to accurately and continuously monitor the position of the cylinder is desirable. However, it is often not cost effective to retrofit an existing cylinder to accept an in-cylinder position feedback sensor. The Micropulse BIW is a low-cost, easy to implement solution. If the cylinder has a locking mechanism that prevents the cylinder rod from rotating, the BIW’s plunger can be coupled directly to the rod. If cylinder rod rotation is a concern, the plunger can be coupled to the load that the cylinder is moving. The result is reliable, accurate, and inexpensive continuous position feedback.