Torque measurement accurate + interference-free "DRFN"
torque ranges from 1 Nm up to 10.000 Nm
torque with square drive
with or without angle (w) function
Variant bracket for quick assembly
Features
- No service needed because of contactless data aquisition
- High interference immunity due to amplified active signal
- High accuracy due to frequency modulation and strain gage technology
- Power supply
- Optional angle detection
Variant bracket for quick assembly
Static bracket / blocking device for torque wrenches
suitable for
- automotive industry
- test benches
- assembly applications
- pulsed tools
Description
The transducer is suited for the most varied measurement duties on threaded fasteners, to check and adjust assembly tools, like screwdrivers and spanners, and to sense loosening torques, etc. It can also be deployed in blocked mode to test torque wrenches. The device is powered wirelessly and the electrical output is wireless, as well. Hence, there is practically no wear on the device.
This sensor is suited for cyclical as well as continuous testing of tools. As the sensor is designed to be torsionally rigid any errors due to it are minimized.
Measurement range / models
| DRFN ¼" 1 | 2 | 5 | 10 | 12 | 15 | 20 | STEP-File DRFN ¼" DRFN ¼"-w |
| DRFN ⅜" 20 | 30 | 50 | 63 | STEP-File DRFN ⅜" DRFN ⅜"-w |
| DRFN ½" 100 | 160 | 200 | STEP-File DRFN-½" DRFN-½"-w |
| DRFN ¾" 200 | 300 | 500 | STEP-File STP DRFN ¾" STP DRFN ¾"-w |
| DRFN 1" 1.000 | 2.000 | STEP-File STP DRFN 1" STP DRFN 1"-w |
| DRFN 1½" 2.000 | 3.000 | 4.000 | 5.000 | 6.500 | 10.000 | STEP-File STP DRFN 1½" STP DRFN 1½"-w |
Technical specifications
| Measurement range | see above or datasheet |
| Supply voltage | 12 V DC ± 10% |
| Power consumption | < 200 mA |
| Rise time 10 - 90 % | 1 ms (1 kHz) |
| Voltage output | 0 - ± 5 V |
| Internal resistance | 100 Ω |
| Ripple | < 100 mVss |
| Nonlinearity | < 0,15 % |
| Hysteresis | < 0,1% |
| Deviation at zero point | ≤± 100 mV |
| Operating temperature | 0 - 60 °C |
| Compensated temperature range | 5 - 45 °C |
| Temperature error zero point sensitivity | 0,01 % / K 0,02 % / K |
| Connection | 12pin-connector |
Angle option (w)
| rev. max. | 3000 min⁻¹ |
| Output | open-collector |
| Internal pull up | 10 kΩ (5 V level) |
| External pull up | 24 V max. |
| I max: | 20 mA |
| Pulses/rev | 360 |
| Resolution | 1° |