Category: Linear Position Sensors
Linear Position Sensing In Tight Spaces
We’ve said it before but it bears repeating: magnetostrictive sensors are the devil you know, but they aren’t the only game in town… not any more. In fact the need to perfectly core-drill a piston cylinder, the requirements for support… Continue reading Linear Position Sensing In Tight Spaces
Why an SL Series Sensor Is Not A “String Pot”
In the world of hydraulic linear position sensors, the term “string pot” is well known to many engineers. Also known as a draw wire sensor, string encoder or my personal favorite, a “yo yo pot”, these devices have been around… Continue reading Why an SL Series Sensor Is Not A “String Pot”
Linear Position Sensors for Harsh Environments
For many years, hydraulic cylinder manufacturers were forced to forgo accurate, robust hydraulic cylinder position measurement on the largest, most powerful hydraulic systems: you know, the place where it’s needed most? Since these systems are typically operating outdoors, under extremely… Continue reading Linear Position Sensors for Harsh Environments
Magnetostrictive Position Sensor Replacement – Part II
As mentioned in our last post Magnetostrictive Linear Position Sensors are a common type of position sensor for hydraulic cylinders where high resolution is of primary concern. The sensor incorporates a stainless steel tubular probe (ie. “the Rod”) and is… Continue reading Magnetostrictive Position Sensor Replacement – Part II
Magnetostrictive Position Sensor Replacement Considerations
One of the prevalent piston position measurement technologies used for mobile hydraulic cylinders is based on the Magnetostrictive properties of ferromagnetic metals. The physics of these sensors is quite complicated, taking advantage of something called the Villari and Wiedemann effects… Continue reading Magnetostrictive Position Sensor Replacement Considerations
Hydraulic Linear Actuator Design Considerations
While there are many types of Linear Actuators ranging from the simple “roller screw” model to sophisticated electro-mechanical, pneumatic, piezoelectric, and hydraulic, a linear actuator generally refers to devices that convert rectilinear or electro-rotational motion into linear motion. Hydraulic linear… Continue reading Hydraulic Linear Actuator Design Considerations
Really Big Hydraulic Cylinders Are Cool…
For those of us engineering types who derive particular enjoyment from an understanding of how big machines work, one of the most awe inspiring things to understand is the power achievable through large scale hydraulic cylinders. Being a unique supplier… Continue reading Really Big Hydraulic Cylinders Are Cool…
Linear Position Sensor Technology Choices
There are a number of technologies to choose from when considering the implementation of a linear position sensor. As CPI’s own sensors focus on the needs of hydraulic cylinder and hydraulic accumulator designers, it is instructive to review the various… Continue reading Linear Position Sensor Technology Choices
CPI Linear Position Sensor Applications
Since we introduced our first LVDT based position sensors back in 1997, we’ve learned a lot about how to refine and extend this technology into some amazing industrial applications. Originally developed for the mobile hydraulics market, CPI sensors have evolved… Continue reading CPI Linear Position Sensor Applications
Sensing Linear Position in Telescoping Hydraulic Cylinders
Telescoping Hydraulic Cylinders find uses in everything from raising the bed of a dump truck, to the massive riser tensioner cylinders used on offshore oil rigs. Telescoping cylinders were first designed to provide long stroke lengths where the total length… Continue reading Sensing Linear Position in Telescoping Hydraulic Cylinders