18 January 2011
Available in ranges of 300mm to 1,200mm, the contactless linear position transducer is suited to use in hydraulic cylinder and actuator feedback applications, where the sensor can be mounted externally or embedded into the cylinder or actuator body. The sensor operates by transmitting a current pulse through its tube. This 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 have less than +/-0.25% linearity and +/-0.01% repeatability over the full scale with outputs that include analog voltage, current and SSI. As the magnetostrictive transducers provides absolute output, no data is lost should power be interrupted. The sensors boasts an excellent stroke to length ratio (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 suitable 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. 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.
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