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Redundant position sensor suits safety work
To ensure safety and availability of mobile machines, MTS has developed the Temposonics MT redundant position sensor. MTS says this unit offers optimum safety of the measurement, which is an important factor in applications where failure could have a major impact on safety and cost, such as with steering cylinders or booms. Thanks to the sensor housing's reduced diameter of 48mm, the redundant sensor is even easier to integrate into small hydraulic cylinders used on mobile machinery. When measuring positions, the MT sensor offers all of the advantages of magnetostrictive technology. It delivers optimum measurement results with linearity better than ±0.04 per cent of full scale and repeatability better than ±0.005 per cent FS, which permits identification of even extremely small measurement differences. Any measurement length within 50 and 1500mm is selectable, whereas the dimensions of the sensor tube, magnet and thread remain standard. The Temposonics MT linear position sensor features two independent measurement systems. Each consists of a channel with basic sensing element, separate power supply, electronic evaluation circuitry and output signal. The basic sensing elements are accommodated in a pressure-resistant stainless steel tube for direct stroke measurement in the hydraulic cylinder. The magnet mounted on the bottom of the cylinder moves without contact along the measuring rod and marks the measuring point reliably through the wall of the rod. The control system checks the validity of the position measurement by comparing the two independent measured values. |
