Miniature Through Hole

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

These compact through hole sensors can work as type 1 or type 4 sensors (find out more about how sensors are classified and what this means for CTU selection in our FAQ). A single CAM204 chip can process up to four of these sensors using type 1 circuitry, or up to two using type 4 circuitry. 

Features

  • Full absolute sensing over 360°
  • Sensors...
    • Built using conventional PCB fabrication
    • Assembled sensors available from CambridgeIC
    • Blueprints available for customers to build sensors themselves
    • Connect to Type 4 circuitry - up to 2 sensors per CAM204 chip
    • Also functions with Type 1 circuitry if 3 or 4 sensors per CAM204 chip are needed
  • Targets...
    • Base built using conventional 1-layer PCBs
    • SMD transponder coils mounted to PCB in balanced configuration for immunity to misalignment
    • SMD capacitor(s) to complete resonant circuit
    • Buy from CambridgeIC or build from components
  • Holes in sensors and targets e.g. for through shaft
  • Repeatable across time and temperature

Applications

  • NEMA8 stepper motor position feedback
  • Actuator position feedback
  • Motion control
  • Valve position sensing
  • Absolute optical encoder replacement

Performance

 Sensor Name 21mm Through Hole Sensor
Sensor Diameter 21mm outer, 5.8mm inner
Target Diameter 21mm outer, 5.0mm inner
Performance, free space  

Gap 0.5mm
No radial or angular misalignment

Max. Linearity Error ±0.9°
Noise Free Resolution 11.2 bits

Gap 0...1mm
Radial Misalignment up to 0.4mm

Angular Misalignment up to 0.5°
Max. Linearity Error  ±1.5°
Noise Free Resolution  11 bits

 

Testing and development

Part NoDescriptionComments
013-0040 Assembled sensor 21mm through hole sensor
013-0041 Assembled sensor 21mm through hole sensor with screen
012-5048 Motor mount for 013-0041 NEMA8 motor mount for sensor with screen
013-1024 Assembled target Frequency optimised (195.4kHz) for use with screened sensor
013-6011 Compatible sensor connector 6-way PicoBlade
013-5006 CAM204 Development Board

Compatible Development Board including CAM204 chip.*

013-5029 CAM204 Development Board

Compatible Development Board including CAM204 chip.*

*Part 013-5006 is the CAM204 development board including type 1 circuitry for 3 or 4 type 1 sensors. Part 013-5029 is the CAM204 development board including type 4 circuitry for up to 2 type 4 sensors.

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

These compact through hole sensors can work as type 1 or type 4 sensors (find out more about how sensors are classified and what this means for CTU selection in our FAQ). A single CAM204 chip can process up to four of these sensors using type 1 circuitry, or up to two using type 4 circuitry. 

Features

  • Full absolute sensing over 360°
  • Sensors...
    • Built using conventional PCB fabrication
    • Assembled sensors available from CambridgeIC
    • Blueprints available for customers to build sensors themselves
    • Connect to Type 4 circuitry - up to 2 sensors per CAM204 chip
    • Also functions with Type 1 circuitry if 3 or 4 sensors per CAM204 chip are needed
  • Targets...
    • Base built using conventional 1-layer PCBs
    • SMD transponder coils mounted to PCB in balanced configuration for immunity to misalignment
    • SMD capacitor(s) to complete resonant circuit
    • Buy from CambridgeIC or build from components
  • Holes in sensors and targets e.g. for through shaft
  • Repeatable across time and temperature

Applications

  • NEMA8 stepper motor position feedback
  • Actuator position feedback
  • Motion control
  • Valve position sensing
  • Absolute optical encoder replacement

Performance

 Sensor Name 21mm Through Hole Sensor
Sensor Diameter 21mm outer, 5.8mm inner
Target Diameter 21mm outer, 5.0mm inner
Performance, free space  

Gap 0.5mm
No radial or angular misalignment

Max. Linearity Error ±0.9°
Noise Free Resolution 11.2 bits

Gap 0...1mm
Radial Misalignment up to 0.4mm

Angular Misalignment up to 0.5°
Max. Linearity Error  ±1.5°
Noise Free Resolution  11 bits

 

Testing and development

Part NoDescriptionComments
013-0040 Assembled sensor 21mm through hole sensor
013-0041 Assembled sensor 21mm through hole sensor with screen
012-5048 Motor mount for 013-0041 NEMA8 motor mount for sensor with screen
013-1024 Assembled target Frequency optimised (195.4kHz) for use with screened sensor
013-6011 Compatible sensor connector 6-way PicoBlade
013-5006 CAM204 Development Board

Compatible Development Board including CAM204 chip.*

013-5029 CAM204 Development Board

Compatible Development Board including CAM204 chip.*

*Part 013-5006 is the CAM204 development board including type 1 circuitry for 3 or 4 type 1 sensors. Part 013-5029 is the CAM204 development board including type 4 circuitry for up to 2 type 4 sensors.

Related Products - miniature through hole sensor

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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