Linear Position Sensors utilize magnetostrictive technology.January 14, 2011 -
Available in ranges of 11.8-39.4 in., MLW Series of Long Stroke Position Sensors provide absolute position measurement of displacements up to 1.2 m. Units are powered by 24 Vdc and have less than ±0.25% linearity and ±0.01% repeatability over full scale with analog voltage, current, and SSI outputs. Featuring self-contained electronics, stainless steel probe, and die cast probe head with IP66 rating, transducers are suited for hydraulic cylinder and actuator feedback applications.
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Original Press release
Macro Sensors
7300 US Route 130 North, Bldg. 22
Pennsauken, NJ, 08110 1334
USA
Magnetostrictive Sensor Provides Highly Accurate Long Stroke Position Measurement for Hydraulic Cylinder/Actuator Feedback and Tank Leveling
Macro Sensors (www.macrosensors.com) introduces the MLW Series of Long Stroke Linear Position Sensors for highly accurately absolute position measurement of displacements up to 1.2 meters. Available in ranges of 300 mm (11.8") to 1,200 mm (39.4"), these contactless linear position transducers are ideal for hydraulic cylinder and actuator feedback applications where the sensor can either be mounted externally or embedded into the cylinder or actuator body.
Utilizing magnetostrictive technology, the MLW sensors operate by transmitting a current pulse through its tube that is reflected by a moveable permanent magnet. The sensor measures the time of flight to determine the position of the magnet on the tube. The time-based position measurement is translated into an output signal.
Powered by 24VDC, the MLW Series of Long Stroke Linear Position Sensors have less than +/-0.25% linearity and +/-0.01% repeatability over the full scale with outputs that include analog voltage, current and SSI. As these magnetostrictive transducers provide absolute output, no data is lost should power be interrupted.
Where other sensing technologies are limited by their size, the MLW Long Stroke Linear Position Sensors have excellent stroke to length ratio (range/length of unit) especially in longer ranges. Self contained electronics, a stainless steel probe and die cast probe head with an IP66 rating and tube IP67 make transducers ideal for measuring the position of moving machine parts in physically demanding applications such as paper and pulp mills, injection molding machinery, turbine blades and process level management. Construction equipment, automotive test stands, flight simulators and valve position are all commonly instrumented with magnetostrictive sensors.
As the sensor probe is sealed up to 5,000 psi, the MLW sensors can be packaged within hydraulic cylinders as a closed loop feedback device. With an optional float kit for the magnet, the MLW sensors can be used to sense the level of liquid inside of a tank.
For more information on the MLW Series of Long Stroke Linear Position Sensors, please visit our web site at http://www.macrosensors.com/MLW_series.html or contact Macro Sensors at postionsensors@macrosensors.com.
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