Ref: K6D80

Sensor 3 forces + 3 torques - 500N to 5kN - 20 to 500 Nm

6-component force/torque sensor of the F6D/K6D series
Force measurement ranges: 0.5 kN to 5 kN
Torque measuring range: 20 to 250 Nm
Accuracy class: 0.2%;
Output signal: not amplified
Dimensions: Ø 80 mm x 50 mm;
Calibration: Tension and compression
Mounting and centering: 6 x M5x0,8 + 2 centering pins Ø3 mm E7
Connection: cable gland (CG) with 5 m cable 33-24 PUR/24x0,03 mm2 OR MP11 24 pins male connector
IP65 construction Aluminium/stainless steel or all stainless steel depending on version
Weight: 450g to 1kg depending on version
Calibration certificate and 6x6 inter-channel matrix supplied

Introduction

The multi-component sensor K6D80 allows to measure forces Fx/Fy/Fz and moments Mx/my/Mz on three perpendicular axes simultaneously, in a reduced size (diameter: 80mm, height: 50mm). 7 versions are available, with force measurement ranges from 500N to 5kN, and torque measurement ranges from 20Nm to 250Nm.

Specifications

Model	Fx, Fy [N]	Fz [N]	Mx, My, Mz [Nm]	Connectivity
K6D80_500N_20Nm_MP11	500,00	1000,00	20,00	Connector MP11
K6D80_1kN_50Nm_CG	1000,00	2500,00	50,00	Cable
K6D80_1kN_50Nm_MP11	1000,00	2500,00	50,00	Connector MP11
K6D80_2kN_100Nm_CG	2000,00	5000,00	100,00	Cable
K6D80_2kN_100Nm_MP11	2000,00	5000,00	100,00	Connector MP11
K6D80_5kN_250Nm_CG	5000,00	15000,00	250,00	Cable
K6D80_5kN_250Nm_MP11	5000,00	15000,00	250,00	Connector MP11

This 6-component load cell uses a rod construction that absorbs forces and torques directly on the pitch circle of the fastening wire, increasing stiffness and extending torque capacity.

The force transmission is applied to ring-shaped segments raised by 1 mm on the upper side, ensuring an even distribution of forces and optimized repeatability (repeatability error < 0.1%). The inside diameter of the segments is used for centering.

The K6D80 2kN / 100Nm load cell is made of aluminum alloy, the K6D80 5kN / 250Nm load cell is made of high strength stainless steel 1.4542.

Installation

The 6-component load cell K6D80 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 6 tappings M5x0,8 + 2 centering pins Ø3 mm E7 (Tightening torques: see here). The application of force is carried out on the portions of the surface raised by 1 mm. The inner part of the surface is used for centering.

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 either a connector or a 5m cable.

Conditioning, Acquisition, Use of the decoupling matrix

The acquisition of the raw measurement signals is done with

a PC or PLC acquisition system equipped with a strain gage bridge input card
or via a strain gage bridge conditioning module with analog or digital output, then a PC or a standard acquisition system.

The inter-channel decoupling matrix is implemented in the conditioning or acquisition module.

The real forces are obtained by multiplying the 6x6 decoupling matrix (M) by the vector I containing the 6 output signals of the K6D80. The origin of the reference frame in which the measured forces are projected is generally the center of the contact surface (see documentation). After neutralization of the inter-channel effects, a force applied on one axis will result in a force variation on only one axis. The accuracy of the measurement is thus improved by a factor of 5 to 10.

PM Instrumentation recommends the GSV series of digital interface conditioning modules for their simplicity of use, their accuracy and their ability to take into account decoupling matrices:

the GSV-8DS (High performance module, 8 analog inputs) or its ruggedized version GSV-8AS, which can be optionally equipped with a datalogger
the GSV-6LTE, equipped with a data logger and wireless connectivity A visualization and acquisition software is included with these modules (GSV-multi). Dll and VI files are also provided for the development of an application under Labview or in C / Visual Studio / C++ / .net