Resonant inductive position sensors and targets for measuring full absolute angle across 360°. The sensor connects to a Resonant Inductive Encoder IC such as the CAM622 to provide high-quality position and velocity data to a host device. The sensor design includes two pairs of PCB coils for detecting the target. Fine coils provide high accuracy and resolution and repeat 3 times around 360°. Coarse coils repeat once around 360° for full absolute measurement of angle. The matching non-contact target design includes a PCB printed resonator coil and SMD capacitor(s). These form a resonant circuit, owered without electrical contact by the sensor’s excitation coil. The resonator coil design is patterned to minimise the effect of misalignments on reported angle. The sensor and target are Type “B3” or “B5”. “B” refers to the resonator frequency band centred on 833kHz. “3” or “5” are the numbers of fine sensor coil periods per coarse.
| Gap | 40 mm Sensor | 50 mm Sensor | 100mm Sensor | |||
| Max. Linearity Error | 0,6 mm | 0,02 mm | 0,02 mm | 0,02 mm | ||
| Max. Linearity Error | 0…2 mm | 0,045 mm | 0,045 mm | 0,045 mm |
| Y misalignment | Gap | 200 mm Sensor | 200 mm Sensor | |||
| Max. Linearity Error | 0,0 mm | 1 mm | 0,025 mm | 0,15% | ||
| Max. Linearity Error | 0,5 mm | 0…2 mm | 0,043 mm | 0,23 % |
Type B Sensor Reference Manual (PDF)
40/50/100mm Linear Sensor Type B6 datasheet (PDF)
200mm Linear Sensor Type B12 datasheet (PDF)
CAM622 Test Board with ABN output for Type B Sensors
CAM622 Resonant Inductive Encoder IC (ABN, SPI) for Type B Sensors
CAM622 evaluation kit with all necessary parts
C-Target for Rotary Sensor Type 6: 35mm/55mm Precision Through Hole
Rotary Sensor Type 6: 35mm/55mm Precision Through Hole
