Precision rotary sensors

This range of rotary sensors is for precision angle measurement over a full 360° of rotation.  Sensors and targets both include large central holes that allow a shaft to pass through them, and have a balanced design for immunity to misalignment.

Precision rotary sensors are type 6 sensors (find out more about how sensors are classified and what this means for CTU selection in our FAQ).

Features

  • Full absolute sensing over 360°
  • Sensors...
    • Built using conventional 6-layer PCB
    • Assembled sensors available from CambridgeIC
    • Blueprints available for customers to build sensors themselves
  • Targets...
    • Base built using conventional 1-layer PCB
    • SMD transponder coils mounted to PCB in balanced configuration for immunity to misalignment
    • SMD capacitor(s) to complete resonant circuit
    • Assembled targets available from CambridgeIC
    • SMD 20mm Transponder Coils available from CambridgeIC for customers to build targets themselves
    • See also Type 6 Rotary Targets.
  • Holes in sensors and targets e.g. for through shaft
  • Highly repeatable across time and temperature

Applications

  • Pan and tilt sensing e.g. for surveillance cameras
  • Motion control
  • Actuator position feedback
  • Valve position sensing
  • Through hole absolute optical encoder replacement
  • Motor control, with CAM502 processor chip

Performance

 Sensor Name 35mm Type 6.3 Rotary Sensor 55mm Type 6.5 Rotary Sensor 110mm Type 6.6 Rotary Sensor 115mm Type 6.6 Rotary Sensor
Sensor and Target Diameter
35mm outer
15mm inner
55mm outer
35mm inner
110mm outer
68mm inner (1)
115mm outer
80mm inner
Performance, free space        

Gap 0.5mm
No radial or angular misalignment

Max. Linearity Error ±0.15°  ±0.09°  ±0.08°  ±0.07°
Noise Free Resolution 14 bits  14.2 bits  15.5 bits  14.9 bits

Gap 1.0±0.5mm
Radial Misalignment up to 0.5mm

Angular Misalignment up to 0.3°
Max. Linearity Error  ±0.22°  ±0.16°  ±0.13°  ±0.11°
Noise Free Resolution  13.3 bits  13.8 bits  15 bits  14.6 bits

 Note (1) Includes fixing holes inside, excludes connector

Testing and development

Parts for prototyping 35mm Type 6.3 55mm Type 6.5 110mm Type 6.6 115mm Type 6.6
Assembled Sensor Part No 013-0024 013-0026 013-0042 013-0051
Assembled Target Part No 013-1019 (182.5kHz) 013-1022 (182.5kHz) 013-1026 (182.5kHz) 013-1028 (182.5kHz)
Compatible Sensor Connector Assembly 013-6001 013-6001 013-6013 013-6011
Compatible Development Boards

013-5034 (CAM312)
013-5030 (CAM204)
013-5032 (CAM502)

This range of rotary sensors is for precision angle measurement over a full 360° of rotation.  Sensors and targets both include large central holes that allow a shaft to pass through them, and have a balanced design for immunity to misalignment.

Precision rotary sensors are type 6 sensors (find out more about how sensors are classified and what this means for CTU selection in our FAQ).

Features

  • Full absolute sensing over 360°
  • Sensors...
    • Built using conventional 6-layer PCB
    • Assembled sensors available from CambridgeIC
    • Blueprints available for customers to build sensors themselves
  • Targets...
    • Base built using conventional 1-layer PCB
    • SMD transponder coils mounted to PCB in balanced configuration for immunity to misalignment
    • SMD capacitor(s) to complete resonant circuit
    • Assembled targets available from CambridgeIC
    • SMD 20mm Transponder Coils available from CambridgeIC for customers to build targets themselves
    • See also Type 6 Rotary Targets.
  • Holes in sensors and targets e.g. for through shaft
  • Highly repeatable across time and temperature

Applications

  • Pan and tilt sensing e.g. for surveillance cameras
  • Motion control
  • Actuator position feedback
  • Valve position sensing
  • Through hole absolute optical encoder replacement
  • Motor control, with CAM502 processor chip

Performance

 Sensor Name 35mm Type 6.3 Rotary Sensor 55mm Type 6.5 Rotary Sensor 110mm Type 6.6 Rotary Sensor 115mm Type 6.6 Rotary Sensor
Sensor and Target Diameter
35mm outer
15mm inner
55mm outer
35mm inner
110mm outer
68mm inner (1)
115mm outer
80mm inner
Performance, free space        

Gap 0.5mm
No radial or angular misalignment

Max. Linearity Error ±0.15°  ±0.09°  ±0.08°  ±0.07°
Noise Free Resolution 14 bits  14.2 bits  15.5 bits  14.9 bits

Gap 1.0±0.5mm
Radial Misalignment up to 0.5mm

Angular Misalignment up to 0.3°
Max. Linearity Error  ±0.22°  ±0.16°  ±0.13°  ±0.11°
Noise Free Resolution  13.3 bits  13.8 bits  15 bits  14.6 bits

 Note (1) Includes fixing holes inside, excludes connector

Testing and development

Parts for prototyping 35mm Type 6.3 55mm Type 6.5 110mm Type 6.6 115mm Type 6.6
Assembled Sensor Part No 013-0024 013-0026 013-0042 013-0051
Assembled Target Part No 013-1019 (182.5kHz) 013-1022 (182.5kHz) 013-1026 (182.5kHz) 013-1028 (182.5kHz)
Compatible Sensor Connector Assembly 013-6001 013-6001 013-6013 013-6011
Compatible Development Boards

013-5034 (CAM312)
013-5030 (CAM204)
013-5032 (CAM502)

Related Products - precision rotary sensors

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CambridgeIC

Founded in 2007, CambridgeIC has developed single chip processors and a set of standard sensor designs and integration tools. These help customers embed resonant inductive sensing inside their products, by drawing on modular and well proven components.

Contact

Cambridge Integrated Circuits Ltd
21 Sedley Taylor Road
Cambridge
CB2 8PW
UK
+44 (0) 1223 413500
info@cambridgeic.com