Products
Frictional Torque Sensor System FGDH-2A (digital telemetry type)
Torque sensor system measures torque on the drive shaft of a car. Frictional strain gauges are used as sensing elements, and the installation is completed by clamping the torque sensor system onto an existing shaft and securing it with a screw. There is no need of detaching the shaft, bonding, nor wiring strain gauges for the installation. The system is applicable to shafts having a diameter of 20mm to 30mm using spacers together, which are available as options. A digital telemetry transmitter is built in the sensor, and measured data are transmitted to an exclusive receiver DT-041R-1 by wireless and output as analog signals. For wireless transmission, 315MHz band extremely low power radio wave is used.
Specifications
Type | FGDH-2A | ||
---|---|---|---|
Applicable shaft diameter | Ø20~30mm | ||
Capacity | Depends on the diameter (outer and inner), material, surface roughness and surface treatment of the shaft (*1) | ||
Output | Depends on the diameter (outer and inner), material, surface roughness and surface treatment of the shaft (*1) | ||
Non-linearity | 1%RO | ||
Allowable temperature | -20~+60°C (no dew condensation) | ||
Sampling frequency | 10kHz | ||
Frequency response | Approx. 1.1kHz | ||
Carrier frequency | 315~321MHz | ||
Number of wireless channels | 4 | ||
Dimensions | Ø52×50mm | ||
Weight | Approx. 85g (excluding spacer) | ||
Protection rating | Equivalent to IP51 | ||
Continuous operating time | Approx. 8 hours | Power source | Lithium secondary battery |
Accessory | USB charger |
- [Calibration example]
- Torque: 500N·m
- Output: 2500 mV (equivalent to 8000×10-6 strain) (*2)
- Non-linearity: 1%RO (at 8000×10-6 strain output)
- 2 welds/sec. at 50 watt sec.
- Conditions of test specimen
- 1. Diameter: 20mm
- 2. Material: SNCM439
- 3. Elastic Modulus: 210000 N/mm2 (test result by TML)
- 4. Poisson's Ratio: 0.29 (test result by TML)
- 5. Surface roughness: Ra 3.2
- 6. Hardness: HRC 38
Features
- Torque measurement system for evaluation test of running performance.
- No need of bonding due to the use of frictional strain gauge
- Digital data communications system enables noise-resistive measurement without wiring works
- Easy attachment to drive shaft and speedy measurement
- Applicable to drive shafts of different diameters by exchanging the spacer (ø20~30mm)
- Frequency response of 1.1kHz
- Equipping chargeable battery
Link of related products
- DT-041T/DT-041RDigital telemetry system