Linear displacement sensor 8739
inductiveDC LVDTanalog

linear displacement sensor
linear displacement sensor
linear displacement sensor
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DC LVDT, inductive
Output signal
industrial, OEM applications, for process automation
Other characteristics
Measuring range

Min.: 0 mm
(0 in)

Max.: 25 mm
(0.98 in)


LVDT TRANSDUCER WITH IN-LINE AMPLIFIER - 8739 Inductive displacement sensors of this series measure linear displacements and indirectly all mechanical values convertible into displacements by additional equipment (i.e. tension and compression forces, extension, torque, vibration). The sensor body equipped with a connector has an outer diameter of only 8 mm and therefore is especially well suitable for the integration in dimensionally restricted structures. Typical application fields are displacement and extension measurements on: -Machines -Servo systems -Motor vehicles -Test benches -Production plants The cylindrical case made of stainless steel, houses a differential transformer (LVDT). It consists of a primary and two secondary coils with axially moveable core. A displacement of this core changes the magnetic induction of the coils. The INLINE carrier frequency amplifier converts the displacement into a direct proportional electrical DC voltage. The transducer is constructed as a probe at which within the measuring range a spring pushes the probe tip towards the measuring object. Bellows protect the mechanical guidance of the probe tip against pollution and splash water. The IN-LINE amplifier is integrated in the connector cable and adjusted specifically to the sensor. Both components form a unit while they can be separated for mounting purposes (miniature plug connection at the transducer). The use of not harmonized components may lead to increased measurement errors. For the IN-LINE amplifier version the sensor body is galvanically isolated from the excitation and from the measuring signal. Lateral forces decrease the durability.

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