DRFN: ETH-messtechnik gmbh

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Torque measurement accurate + interference-free "DRFN"

22 range from ± 0 - 1 Nm up to ± 0 - 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.

Datasheet

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 rangesee above or datasheet
Supply voltage12 V DC ± 10%
Power consumption< 200 mA
Rise time 10 - 90 %1 ms (1 kHz)
Voltage output0 - ± 5 V
Internal resistance100 Ω
Ripple< 100 mVss
Nonlinearity< 0,15 %
Hysteresis< 0,1%
Deviation at zero point≤± 100 mV
Operating temperature0 - 60 °C
Compensated temperature range5 - 45 °C
Temperature error
     zero point
     sensitivity

0,01 % / K
0,02 % / K
Connection12pin-connector

Angle option (w)

rev. max.3000 min⁻¹
Outputopen-collector
Internal pull up10 kΩ (5 V level)
External pull up24 V max.
I max:20 mA
Pulses/rev360
Resolution

Available accessories