8738-DK25, DK50, DK100 High precision incremental displacement transducer

Highly precise up to ± 2 µm, diameter 20 ... 25 mm, vibration resistant and dust proof, high protection class up to IP64

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      • Features

        • Measuring ranges between 0 ... 5 mm and 0 ... 100 mm
        • Accuracy up to ± 2 μm
        • Diameter 20 ... 25 mm
        • Vibration resistant and dust proof
        • High protection class up to IP64
      • Product data

        Model 8738-DK25, DK50, DK100
        Principle Incremental
        Measuring range

        0 … 25 mm
        0 … 50 mm
        0 … 100 mm

        Resolution 0.5 µm
        Signal output TTL
        Protection class IP64
        Range of operating temperature 0 ... +50 °C
        Excitation voltage 5 V ± 5 %
        Electrical connection Shielded cable
        Return spring Yes
        Specific characteristics

        • Diameter 20 ... 25 mm
        • Vibration resistant and dust proof
      • Description

        Incremental magnetic measuring heads offer maximum precision over the full range of measurements. As a result of the magnetic operating principle and the robust mechanical construction, they are insensitive to soiling and are therefore ideally suited to use in production facilities. Thanks to the high quality of their measurements, their high protection and long service life, these sensors are used in many technologies (industry, research, development etc.).

        Typical applications include:

        • Monitoring both slow and fast movements between machine parts
        • Measurements of position and positional changes in components and structural foundations, of servo regulators, valve and robot controllers
        • Measurement of growth, and so on

        The incremental displacement sensors are based on a magnetic principle: consisting of a magnetic scale and a multi-slot reading head that responds to changes in magnetic flux, they detect linear movements with high precision and resolution.

        The scale of ferromagnetic alloy – or magnetic tape – is magnetized by an alternating magnetic field with a pole spacing of 0.2 mm. A special recording head and a laser measurement system guarantee that the graduations are very precise. From the magnetic pattern on the scale, the multi-slot reading head generates a signal proportional to the movement.

        The analog signal generated by the reading head is electronically divided and digitized. Changes in length can be measured with a resolution of from 1 μm down to 0.1 μm. 

      • Data Sheet & Downloads

        Data sheet
        Further info
      • Accessories

        pdf Sensor holder
        pdf Sensor fixing bracket
        pdf Probe tips

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