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Inductive sensors based on eddy currents
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Inductive sensors based on eddy currents - 1

More Precision eddyNCDT // Inductive sensors based on eddy currents

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Measuring principle & fields of application eddyNCDT Electromagnetic alternating field Sensor with coil Eddy currents Metal plate Measuring principle Among inductive displacement sensors, the eddy current principle occupies a unique position. Measuring via eddy current is based on the extraction of energy from an oscillating circuit. This energy is needed for the induction of eddy currents in electrically-conductive materials. Here, a coil is supplied with an alternating current, causing a magnetic field to form around the coil. If an electrically conducting object is placed in this...

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Overview Eddy current sensor with integrated controller eddyNCDT 3001 Measuring ranges 2 - 8 mm Resolution ≥ 3 µm Frequency response 5 kHz Compact eddy current measuring system eddyNCDT 3005 Measuring ranges 1 - 6 mm Resolution ≥ 0.5 µm requency response 5 kHz F High-performance inductive measuring system eddyNCDT 3060 Measuring ranges 1 - 8 mm Resolution ≥ 0.02 μm requency response up to 20 kHz F High-performance inductive measuring system eddyNCDT 3070 Measuring ranges < 1 mm Resolution ≥ 0.02 μm requency response up to 20 kHz F High precision eddy current displacement measurement...

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Inductive sensors based on eddy currents - 4

Robust sensors with maximum precision eddyNCDT eddy current sensors from MicroEpsilon are often used in applications requiring maximum precision in harsh ambient conditions. Immunity to dirt, pressure and extreme temperature are their distinctive features. Advantages over conventional inductive sensors ■ High frequency response for dynamic measurements ■ High resolution in the submicron range ■ High linearity and temperature stability ■ Measurement on ferromagnetic and non-ferromagnetic targets Resistant to media in the measuring gap 1Protection class IP67 1Pressure-resistant models up to...

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Standard installation situation Each eddyNCDT sensor is factory-calibrated under standardized installation conditions. These installation conditions involve mounting, positioning of the nut and surrounding materials. Deviations installation situations may affect the linearity and accuracy. Field linearization or special tuning in the factory may counteract this effect. Standard target materials eddyNCDT sensors are factory-calibrated for the following materials: Ferromagnetic target: Steel (St37) DIN1.0037 Non-ferromagnetic target: Aluminum AlCuMgPb3.1645 Customer-specific adjustment for...

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Inductive sensors based on eddy currents - 6

Robust M12 miniature eddy current sensor The two eddyNCDT 3001 U2 and U4 models are powerful eddy current sensors whose compact dimensions have to date only been reserved for inductive sensors and proximity sensors. These compact sensors come with integrated controller including temperature compensation while offering an excellent price/performance ratio, as well as easy operation. Therefore, the sensors are ideally suited to OEM integration and machine building applications. The temperature-compensated design provides high stability even in fluctuating ambient temperatures. The sensors are...

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Inductive sensors based on eddy currents - 8

Robust miniature sensors in M18 housing The U6 and U8 models of the eddyNCDT 3001 series are powerful eddy current sensors with integrated controller in an M18 design. Calibrated for ferromagnetic or nonferromagnetic materials, these compact sensors offer measuring ranges of 6 mm or 8 mm. As these sensors are temperature-compensated, they provide high signal stability even in fluctuating ambient temperatures. Due to their robust design, these sensors are used for measurement tasks in harsh, industrial environments.

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Inductive sensors based on eddy currents - 9

Measurement direction Connector side

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Inductive sensors based on eddy currents - 10

Robust eddy current measuring system The eddyNCDT 3005 is a powerful eddy current measuring system for fast, high precision displacement measurements. The system comprises a compact controller, a sensor and an integrated cable and is factory-calibrated for ferromagnetic or nonferromagnetic materials. As sensor and controller are temperature-compensated, high measurement accuracies can be achieved even in fluctuating temperatures. The sensors are designed for ambient temperatures up to max. +125 °C but can optionally be custom engineered for temperatures from -30 °C to 180 °C. The measuring...

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Inductive sensors based on eddy currents - 11

Model Measuring range Start of measuring range Temperature stability Temperature compensation Sensor type Min. target size (flat) Supply voltage Analog output with LF & HF variants (please consider the notes for frequency separation, p. 46) Sensor: integrated cable, length 1 m, min. bending radius 18 mm Supply/signal: 5-pole M12 connector (cable see accessories) Connection Storage Temperature range Sensor: -20 … +125 °C (optional -20 … +180 °C), Controller: 0 … +70 °C Pressure resistance 10 bar (sensor, cable and controller) 15 g / 6 ms in 3 axes, 2 directions and 1000 shocks each 5 g / 10...

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Inductive sensors based on eddy currents - 12

High performance for the industry The eddyNCDT 3060 is a powerful, inductive sensor system based on eddy currents for fast, high precision displacement measurements. The system comprises a compact controller, a sensor and an integrated cable and is factory-calibrated either for ferromagnetic or nonferromagnetic materials. Integration into plant and machinery As sensor and controller are temperature-compensated, a high measurement accuracy can be achieved even in fluctuating temperatures. The sensors are designed for ambient temperatures up to a maximum of +200 °C and an ambient pressure up...

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Inductive sensors based on eddy currents - 14

11 Valid for operation with DT306x controller, referred to nominal measuring range 2 Relates to mid of measuring range 31 RMS value of the signal noise, static (20 Hz) 4) Only with DT3061 controller and 5-point linearization 5 Length tolerance cable: nominal value +30 % 6) Weight only sensor without nuts without cable

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Inductive sensors based on eddy currents - 15

11 Valid for operation with DT306x controller, referred to nominal measuring range 2 Relates to mid of measuring range 35 RMS value of the signal noise, static (20 Hz) 4) Only with DT3061 controller and 5-point linearization 5 Length tolerance cable: nominal value +30 % 65 Weight only sensor without nuts without cable

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