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Data Sheet Precision Torque Sensor Model 8661

Data Sheet Precision Torque Sensor Model 8661

Data Sheet Precision Torque Sensor Model 8661

Product catalog summary
Product Overview: The Burster Model 8661 is a high-precision, rotating, contactless torque sensor utilizing the strain gage principle. It features maintenance-free inductive and optical signal transmission, digitizing signals directly on the shaft. Outputs are available as voltage signals or via USB, supporting up to 25,000 rpm and offering a bidirectional voltage output from -10 V to +10 V for rotation direction identification.
Specifications: Measurement ranges span from 0 ... 0.02 N·m to 0 ... 1000 N·m with a linearity error of ≤ ±0.05% F.S. The sensor has a refresh rate of 2000 measurements per second and an output signal range of 0 ... ±10 V. Optional speed and angle measurement is available with up to 2000 increments, providing a TTL output signal.
Technical Data: The rated supply voltage is 10 to 30 V DC with a power consumption of approximately 2 W. It offers a resolution of 16 bits (0.38 mV) and operates within a temperature range of 0 °C to +60 °C. The sensor can handle dynamic overloads at 70% of nominal torque, with a maximum operation torque of 200% of nominal torque.
Mechanical and Environmental Conditions: Constructed with anodized aluminum housing and stainless steel shaft ends, the sensor offers IP40 protection. It withstands axial and radial loads with specific limits per model, and the maximum rotary speed ranges from 7000 to 25000 min-1 based on the model.
Installation and Accessories: Installation requires adherence to specified axial and radial force limits. Accessories include connection cables, metal bellows couplings, and mounting blocks. A USB interface and software options like DigiVision Light and Professional are available for data analysis and configuration.
Applications: The Model 8661 is ideal for research and development, machinery and plant engineering, electric motor testing, and various test bench applications.
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Catalog excerpts

Data Sheet Precision Torque Sensor Model 8661-1

Delivery: ex stock | Warranty: 24 months rotating, contactless With mounting block and couplings Highlights ■ Measurement ranges of 0 ... 0.02 N-m to 0 ... 1000 N-m ■ Very low linearity error < ±0.05 % F.S. ■ Refresh rate 2000 measurements/s ■ Speed and angle measurement up to 2000 increments ■ Dual range in different graduations ■ Shaft end with keyway ■ USB port including software ■ Machinery and plant engineering ■ Electric motor test ■ Suitable for use in all types of test bench The non-contact torque sensor type 8661 works according to the strain gage principle. Thanks to the inductive and optical transmission of the signals, the sensor is maintenance-free, the signals are digitized directly on the shaft and made available by the evaluation electronics as a voltage signal or via USB. Thanks to the high-quality bearing, depending on the measuring range, up to 25,000 rpm is possible. The bidirectional voltage output from -10 V ... +10 V allows the direction of rotation to be identified very easily. To record the speed and angle of rotation, the sensor can optionally be equipped with different number of increments, up to 2000. This speed / angle signal is available as a TTL output signal. The free DigiVision Light software is available in connection with USB, alternatively drivers for LabVIEW and DASYLab are ready for download. Connection cables in various lengths, metal bellows couplings and mounting blocks are available for integration in customer-specific systems. burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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Data Sheet Precision Torque Sensor Model 8661-2

Relative non-linearity 0.1 % F.S. 0.05 % F.S. Relative non-linearity dual range sensor Relative hysteresis Tolerance of sensitivity Electrical values Rated supply voltage range Output voltage at ± rated torque Output resistance Insulation resistance Refresh rate Ripple Control signal Environmental conditions Range of operating and nominal temperature Sensitivity of temperature effects Mechanical values Dynamic overload safe Max. operation torque Breakaway torque Alternating load Maximum limit axial load Maximum limit radial load Spring constant Mass moment of inertia measuring side Mass moment...

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Data Sheet Precision Torque Sensor Model 8661-3

Do not exceed the permitted axial and radial forces during fitting and operation. Installation instructions Please refer to our operating instructions for detailed information www.burster.com. Suitable couplings should be used to avoid strain resulting from parallel or angular offset between the shafts. burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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Data Sheet Precision Torque Sensor Model 8661-4

Dimensional drawing Measuring range* For detailed dimensions you can find sensor CAD data on our website www.burster.com. All dimensions without tolerance specifications comply with ISO 2768-fH. burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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Data Sheet Precision Torque Sensor Model 8661-5

All dimensions without tolerance specifications comply with ISO 2768-fH. burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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Data Sheet Precision Torque Sensor Model 8661-6

12-pin connector or USB (Option, USB connection cable included) For optimum compensation of misalignment we recommend torsionally free metal bellow couplings. They are characterized by their excellent torsional stiffness during torque load and their low restoring forces. The couplings are optionally with keyways available. For further information please see accessories data sheet 8695. If the sensor needs to be replaced, the locating pin speeds up replacement, avoiding the need for laborious realignment. This can be useful especially when the sensor is only used occasionally in the load path....

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Data Sheet Precision Torque Sensor Model 8661-7

The sensor with two measuring ranges corresponds to its dimensions of the standard version, but has two separately calibrated measuring ranges. The measuring ranges are switched within <50 ms, even during measurement operation, by applying the operating voltage to pin L or via USB. For angular displacement measurement (or direction detection), both channels need to be evaluated. To achieve the maximum angular resolution, four-edge decoding must be used to read both the rising and falling edges. For instance an angular resolution of up to 0.045° can then be achieved with an encoder disk having...

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Data Sheet Precision Torque Sensor Model 8661-8

DigiVision configuration and analysis software Features ■ Configuration options for averaging and filters; value stored in sensor ■ Intuitive user interface ■ Automatic sensor identification ■ Sensor calibration data readout burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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Data Sheet Precision Torque Sensor Model 8661-9

Order code Measuring Range Standard sensor Shaft ends with keyway 2 burster Sensors and Process Instruments - Technical changes reserved. All data sheets at www.burster.com

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