Rotating telemetry for wheels and rotors


CT8-Wheel 4-8-channel telemetry system

4/8-channel wheel telemetry system – including signal conditioning for STG, TH-K, PT100, ICP, POT or high-level inputs

CT4/8-Wheel is a telemetry system designed for easy mounting onto rotating wheels to providing non-contact transmission of measured parameters such as pressure, force, temperature, acceleration and voltage.

Sensors inputs are connected via waterproof screw connectors. The sensor signals are conditioned, digitized and transmitted via radio frequencies. Four different carrier frequencies are provided allowing up to four systems (e.g. on for four wheels) to be operated in parallel. The complete transmitter assembly is water protected according to IP65 specifications.

The following sensors can be connected to the system: (STG) Strain gages sensors in full, half and quarter bridge configuration (> 350 Ohm), Type K thermocouples -50 to 1000° C (fully galvanically insulated), ICP and capacitive sensors. Voltage inputs of ±5 V and ±10 V are available. The stationary receiver in the vehicle provides ±5 V analog output signals at BNC sockets (option: digital PC interface).

The analog signal bandwidth is 0-95 Hz (40kbit) and up to 0-3000Hz (1280kbit) for eight channels. The measurement accuracy is ±0.25 % (without sensor). The CT4/8-Wheel is specified for operational temperatures from -20° C to +70° C. The maximum distance between transmitter and receiving antenna is approx. 10-20 m (30-60 feet) – depending on the application!

Product specifications

  • STG offset via potentiometer or optional auto zero calibration
  • 12 bit ADC resolution, silmultaneous sampling of all channels
  • Water protected housing (IP65)
  • Output analog (+/- 5 V) and digital PC interface (option) on receiver side
  • 4 different carrier frequencies enable parallel measurements on 4 wheels
  • 40...1280 kbit with diversity receiver
  • Powered by accumulator (up to 10 h)

Signal bandwidth

4x 0-190 Hz 8x 95 Hz with 40 kbit Tx
4x 0-1500 Hz 8x 750 Hz with 320 kbit Tx
4x 0-3000 Hz 8x 1500 Hz with 640 kbit Tx
4x 0-6000 Hz 8x 3000 Hz with 1280 kbit Tx

Downloads for this product


User manual

Application samples

Additional views

  • CT8-Wheel application BMW
  • CT8-Wheel telemetry application
  • CT4-Wheel set with standard accessories
  • CT8-Wheel application Porsche (c) by Porsche
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