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High reliability and performance are achieved through the use of a specially shaped rotor and wound coil that together simulates the linear displacement of a Linear Variable Differential Transformer (LVDT).  Rotational movement of the rotor shaft results in a linear change in the amplitude of the output signal, directly proportional to the shaft angle change, while the phase of this output signal indicates the direction of displacement from the null point. Non-contact electromagnetic coupling of the rotor provides infinite resolution thus enabling absolute measurements to a fraction of a degree. AC operation eliminates the need for integrated signal conditioning components, thereby offering the user an extremely wide operating temperature range of -55°C to +150°C. Factory calibrated to operate over a ±30 degree range, the R30A offers a non-linearity of less than ±0.25% of full range. Extended range operation up to a maximum of ±60 degrees is possible with increased non-linearity. Packaged in a small, size 11 servo mount, aluminum housing with flying lead termination, the R30A is ideal for space restrictive applications.


  • AC operation
  • ±60 degree angular sensing range
  • Light weight
  • Non-contact electrical design
  • Wide operating temperature range
  • Size 11 servo mount
  • Anodized aluminum housing

Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Sensor Type  RVDT

Configuration Features

  • Electrical Connection  Lead Wires

Electrical Characteristics

  • Supply Voltage (Vrms) 3

  • Output Type  AC Voltage

Signal Characteristics

  • Excitation Frequency (kHz) 2.5 – 10

Body Features

  • Angular Sensing Range (°) ±30, ±40, ±60

  • Weight (g) 36

  • Case Material  Anodized Aluminum

Mechanical Attachment

  • Mounting  Size 11 Servo Mount


  • Shaft Diameter 4.763 mm [ .1875 in ]

  • Case Diameter 25.4 mm [ 1 in ]

Usage Conditions

  • Operating Temperature Range -55 – 150 °C [ -67 – 300 °F ]

Industry Standards

  • Certifications  RoHS


  • Non-Linearity (%) ±.25, ±.5, ±2

  • Bearing Type  ABEC 3 Precision Ball Bearing

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