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Digital Telemetry System

This is a telemetry system for dynamic strain measurement using a wireless module of 2.4GHz advanced low-power data communication system. It consists of the transmitter DT-121T and the receiver DT-181R. It is suitable for application where there is some distance between the transmitter and the receiver such as a large testing object or a moving […]

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This is a telemetry system for dynamic strain measurement using a wireless module of 2.4GHz advanced low-power data communication system. It consists of the transmitter DT-121T and the receiver DT-181R. It is suitable for application where there is some distance between the transmitter and the receiver such as a large testing object or a moving object, not like as a conventional system whose application is limited to the vicinity of drive shaft of a passenger car. The specifications of this system conform to the regulation of the global wireless communication system. If a certification is obtained in the state of the operator, this system can also be used outside Japan. 

Features 
  • 2.4GHz band low-power data communication system 
  • 5kHz sampling 
  • Measuring range is selected among ±5000, ±10000 and ±25000x10-6 strain(To be specified when ordering) 
  • Voltage output for strain is fixed; No need of calibration 
  • Antenna is built in the transmitter
Transmitter:
TypeDT-121TDT-121T-(1)DT-121T-(2)
Number of measuring pointStrain: 1 point
Applicable gauge resistance Full bridge 120~1000Ω
Bridge excitation2V ±8%
Measuring range ±25000×10-6 strain ±5000×10-6 strain ±10000×10-6 strain
Resolution1×10-6 strain
Measuring accuracy ±0.2%FS
Sampling frequency ±0.2%FS
Frequency response DC~1kHz(-3dB±1dB)
Stability on zero ±0.01%/°C
Stability on sensitivity ±0.01%/°C
Dimensions 45(W)×11(H)×31(D)mm (except projecting parts)
Weight Approx. 17g


Receiver:
TypeDT-181R
Voltage output ±5V
Lowpass filter 100Hz, 500Hz, PASS (1kHz) (-3dB±1dB)
Dimensions48(W)×23.5(H)×100(D)mm (except projecting parts)
WeightApprox. 140g
WeightDC9~16V
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