induSENSOR, LVDT Messtaster Gauging Sensor Instruction Manual
■Inductive gauging sensors on the LVDT principle (Linear Variable Differential Transformer) consist of a primary and two secondary coils with a common moveable magnetic core.
■An oscillator electronics excites the primary coil with an alternating current of constant frequency. Consequently alternating currents are induced in both secondary coils, in relation to the core position. A displacement of the core yields a higher voltage in one secondary coil and a lower voltage in the other coil. The difference between both secondary voltages is proportional to the displacement.
■At the mechanical zero point the signal in the two secondary coils is cancelled out due to the position of the probe tip. The gauging sensor provides the signal 0 volts. The mechanical zero point is the centre point of the linear measuring range (± measuring range). The range of the probe tip movement is considerably larger than the linear measuring range, and it depends on the gauging sensor.
■The mechanical zero point is different in every sensor, so that even with several sensors of the same type onetime measurement with a calliper square is not sufficient.
■A controller (available from MICRO-EPSILON) transforms the differential signal of the two secondary coils into a stable direct voltage output signal.
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induSENSOR LVDT 、 LVDT 、 DTA-1G8 、 DTA-3G8 、 DTA-5G8 、 DTA-10G8 、 DTA-G8-53-CAV 、 DTA-1G8-V 、 DTA-3G8-V 、 DTA-5G8-V 、 DTA-10G8-V 、 DTA-1G8-3-CA-V 、 DTA-3G8-3-CA-V 、 DTA-5G8-3-CA-V 、 DTA-10G8-3-CA-V 、 DTA-1G8-3-CA 、 DTA-3G8-3-CA 、 DTA-5G8-3-CA 、 DTA-10G8-3-CA |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2015/10/5 |
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X975X286-A031105HDR |
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317 KB |
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