Ref: K3R70 - Fz+Mxy - Ø70 - 100N - 1Nm

Force transducer + torque 100 N / 1 Nm- IP66 - compact - low cost

  • 3 axis force+torque sensor
  • Fz measuring range: ±20N, ±50N, ±100N
  • Measuring range Mxy: ±0.2Nm, ±0.5Nm, ±1Nm
  • Accuracy: 0.1%.
  • Output signal: 1mV/V
  • Dimensions: Ø 70 mm x 12 mm
  • Bore: 12 mm H7
  • Mounting via 8 threads M46, diameter 50 and 100
  • Material: Aluminium IP66
  • Calibration: Traction and Compression
  • Connection: 10-wire cable 3m 24-10 PUR

Download the product sheet

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Introduction

The 3-component sensor K3R70 is a simple, accurate and affordable solution for the measurement of the force Fz, and the moments Mx/My simultaneously, in a minimal space (thickness: 12 mm).

The K3R70 sensor consists of an outer ring, integral with the frame, and an inner ring, integral with the specimen, connected by 4 instrumented beams with a complete strain gage bridge. A 12 mm diameter bore allows the passage of a shaft, an electrical or hydraulic connector.

The K3R70 can also be used as a 3-axis force transducer Fx/Fy/Fz, by dividing the torque values by the distance between the transducer center and the point of introduction of the forces when this one is known.

Specifications

3 versions are available, with force measurement ranges between ±20N and ±100N, and torque measurement ranges between ±0.2Nm and ±1Nm. The accuracy is 0.1%.

Model Fz [N] Mx, My [Nm] Material Plan
K3R70_20N_200mNm 20 0,2 Aluminium Plan
K3R70_50N_500mNm 50 0,5 Aluminium Plan
K3R70_100N_1Nm 100 1 Aluminium Plan

Installation

The 3-component load cell K3R70 is easily installed on machine tools, arms, or test benches. The introduction of the forces and the fixing to the bench are carried out by 2 x 4 M4 tappings (inner circle: 36mm, outer circle: 58mm) + 4 centering pins Ø4,2 mm.

The sensor is supplied with 5 VDC. The operating temperature range is -10 to 85°C. The output signal is not amplified. The sensor is delivered with a 3m cable.

Conditioning, Acquisition, Use of the decoupling matrix

The force vector L [Fz; Mx. My] is obtained by applying a matrix A to the 4 output signals U of the K3R70. The decoupling matrix A, with 12 terms, is identified during the calibration and specific with the sensor.

A Ch 1 Ch 2 Ch 3 Ch 4
Fz a11 [N/mV/V] a12 [N/mV/V] a13 [N/mV/V] a14 [N/mV/V]
Mx a21 [Nm/mV/V] a22 [Nm/mV/V] a23 [Nm/mV/V] a24 [Nm/mV/V]
My a31 [Nm/mV/V] a32 [Nm/mV/V] a33 [Nm/mV/V] a34 [Nm/mV/V]

We recommend the following modules for signal conditioning and acquisition:

The visualization and acquisition software included with these modules (GSV-multi) has the ability to apply the A decoupling matrix on the output signals of the K3R70, allowing direct acquisition of real forces.

Applications

  • Robotics
  • Production
  • Quality control
  • Load measurement in medicine, prosthetics, orthopedic engineering or gait analysis
  • Measurement in sports medicine
  • Comfort / ergonomics measurements
Type
beam sensor
Moment capacity
1 Nm
Number of Axis
3 Axis
Precision (max error)
≤ 0.1 %
Tension d'alimentation
10 Vcc
Measurement direction
Traction & Compress.
Housing
Aluminium
Protection Class
IP66
Measuring Range (Force)
⩽ 1 kN
Application
High Accuracy, OEM, low cost

  • Connector on cable for acquisition
  • Extended temperature compensation
  • Electronic conditioning and acquisition
  • Connector output on request
  • TEDS module
  • Calibration option
  • Optimization of the sensor accuracy
  • Increase of the accuracy class.
  • Conditioning electronics
  • Display
  • Specific wiring

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Phone +33 1 46 91 93 32