SR10A/PE512 Slip Ring Assembly


  • 4, 6, 8, or 10 circuit slip ring with optical encoder
  • Zero connection option for use of only the precision encoder
  • 2.5″ Diameter Rotor
  • 2 outputs of 512 ppr in quadrature
  • 1 output of 1 ppr for an index pulse
  • All pulses accurate within 5 arc-minutes
  • Sealed against dust
  • Instrumentation quality rings and brushes


The Michigan Scientific Slip Ring and Precision Encoder Assemblies are used for applications requiring both a slip ring and a precision encoder. These assemblies are available in both standard and weatherproof models. The unit is designed to mount on the end of a rotating shaft, they make electrical connections to strain gages, thermocouples, or other rotating sensors, while simultaneously providing pulses to measure rotational velocity and angular position. The slip ring brushes and rings are made of precious metals, which minimizes noise and enables the assemblies to be used for low level instrumentation signals. Connections are made through color coded solder terminals located on both the slip ring rotor and slip ring stator.

This slip ring accepts up to ten circuit connections and incorporates an optical encoder that generates two outputs of 512 pulses per revolution (ppr) in quadrature and a third output of 1 ppr. The quadrature feature detects the direction of rotation, and the 1 ppr is an index pulse used as a reference point when measuring angular position. True shaft position is indicated within 5 arc-minutes, resulting in high accuracy. This is particularly important when making measurements such as torsional vibration, instantaneous velocity, and angular position. Analog output signals for angular position and rotational speed can be obtained by using these models with Michigan Scientific’s Frequency to Voltage Encoder Electronics.

Ordering Options

The Slip Ring and Precision Encoder Assemblies are available with 256, 360, 500, or 512 pulses per revolution.


Last Modified: Jun 6, 2019 @ 10:53 am