burster

1. Precision Torque Sensor Series 8661 The next Generation www.burster.com - 1 www.burster.de

2. HardFacts • Measuring range: from 0…+/- 0,05 Nm to 0 … +/- 200 Nm • High precision for static and rotating applications 0,05% f.s. and 0,09° • Output signal for toque +/- 10 VDC, TTL for speed and angular measurement (option), USB (option) • Extra socket for alternative external supply • Simple field installation using provided mounting rack • Excellent price – performance ratio www.burster.de

3. Measuring Principle • Max. tension appears at an angle of 45° • Strain gages with max. sensitivity at 45° • Two strain gages on one backing • Additional strain gages on back side www.burster.de

4. EnergyManagement • Contactless energy transmission from stator to rotor (Induction coils) www.burster.de

5. Inductor Coil Sending LED Flexible Circuit Board Signal Processing Rotor Strain Gages Wheatstone Bridge Code Wheel www.burster.de

6. Signal Processing Stator www.burster.de

7. Extra socket for external supply • Intelligent operating state indicator Operating state display for: magnitude, overload and error status Electrical Properties • Integrated 16 bit A/D & D/A converters • Torque: Output voltage 0… +/- 10 V • Angle / speed: TTL output (5V ), configurable as open collector output for direct connection to PLC (pos. logic), option • Wide supply voltage input range 10 V…30 VDC • Automatic function check at power-on • Check function inside (10.000 V output) www.burster.de

8. Mechanical properties • High quality bearings, low friction, excellent balance, allowes speed of over 25.000 rpm • Overload protection 300 % of range • Smooth shaft ends (feather key grooves on request) • High quality stainless steel shaft • Mechanical adaptation using metric threads • (front/rear/bottom) • Test and drive side are inscribed to simplify the • orientation www.burster.de

9. Balancing • Step 1: Clip on shaft caps • Step 2: Set into very slow rotation • Step 3: Oscillating motion • Step 4: Wait until it commutes to standstill • Step 5: Grind off material on bottom • Repeat until oscillations disappear • Balance Quality Grade • of at least G 6.3 according to DIN 1940-1 Shaft end caps with extra low friction miniature ball bearing www.burster.de

10. Torque Calibration Equipment M = r . m . glocal • Deadweight Tester #1 • Range: ± 0,05 Nm…± 5 Nm • Lever arm r ≈ 0,1 m • Weights m = 50 g to 5 kg • Deadweight Tester #2 • Range: ± 5 Nm …± 250 Nm • Lever arm r ≈ 1 m • Weights m = 0,5 kg to 25 kg www.burster.de

11. Torque Adjustment & Calibration • Adjustment • Each 8661 is adjusted digitally using the equipment shown above • Each 8661 comes with a test certificate • Calibration certificates (DIN 51309) • Clarify customer’s acceptance • In house lab: 0,05 Nm…250 Nm • DKD calibration certificates (ISO 17025) • International recognition & acceptance • Cooperation with external calibration laboratory • Since 2010: New accreditation body: DAkkS • DKD logo remains on calibration certificates www.burster.de

12. HighPrecision • Linearity up to +/- 0.05% F.S. • Hysteresis up to +/- 0,05% F.S. • Min. effect of temperature up to +/- 0,01% F.S./K • Accurate angle/speed measurement 0.09° (option) www.burster.de

13. Modular Assembly System • Standard modules on stock • Real time adjustment of the production volume • Flexibility in the assembly • Expedited production process • Fast delivery time www.burster.de

14. Accessories • 8661-Z010 External power supply unit 230 V AC to 12 V DC, 400 mA, • 8661-Z00X Mounting rack For range 0-0,05 Nm to 0-200 Nm • 8690 Metal Bellows Couplings Central hole, specific design with two clips for secured cable fixation www.burster.de

15. Power/Drive Engineering Aviation and Electronic Industry High sensitive rotary switch testing High speed engines incl. power measurement Chemical Industry R & D in Laboratory Measure of viscosity in chemical liquids Target Market Automotive and Industrial Medical and Pharmacy Frictional torque measurement on bearings Biomechanical actuation Micromechanics test benches www.burster.de

16. Automation: Drive Testing • Final inspection for electric motors. • Torque, engine rotation speed as well as performance has to be measured. • Vibration - proof construction allows high - speed. Secured fixation using mounting rack. On booth ends flexible couplings. • 0…± 10 V output signal or data logging/ visualization incl. mechanical performance using DIGIVISION. www.burster.de

17. Automotive:Material Selection Tappet • Fatigue test rig for camshaft and tappet for materials selection • Surface fatigue and abrasive failure due to a build-up of stress between camshaft and tappet • Torque and rotation speed have to be measured during the valve actuation process • Correlation between measured force and material fatigue  optimized material selection www.burster.de

18. Car Industry:Rotary Control Element • Labor / industrial test bench for final inspection of air conditioner rotary switch. • High sensitive torque and accurate angle measurement. • Sensor fixed using a mounting rack, flexible couplings balance bending and angle misalignment. • Optimized torque transmission using ball bearing. • Evaluation / visualization using 9307. www.burster.de

19. Car Industry: Final testing on radio knob • As QC criteria a car radio turn knob must be within min/max of specific torque range • Measure of torque against angle at various position • Low maximum torque 0.08Nm measured by 200mNm sensor • Accuracy : 0.0001Nm for torque and 0.5 Deg for angle www.burster.com 31/07/14 - 19

20. Car Industry: Testing on spindle drive for hand brake Fatigue testing on spindle drive of an electro-mechanic hand brake for passenger car Rotating torque measurement (2*5 Nm range, 1*1 Nm range) Simulation of real-life operation; torque must remain within min-max tolerance band Required accuracy 0.1Nm, evaluation of values by industrial PC and LabView www.burster.com 31/07/14 - 20

21. Medical Engineering: Test Benches for Dental Drills • Final inspection of dental drills. • Continuously measurement of torque and rotation speed on high dynamic engines • Vibration-proof construction allows high-speed over 25000 rpm. • 0…± 10 V signal or evaluation/ visualization incl. mechanical performance using DIGIVISION Dental Drill www.burster.de

22. Cosmetic industry: Final Testing of Lipstick Mechanics • Measurement of torque required to open and close lipstick as important QC criteria • 100% test in automated production line in Korea • 4 torque measurements simultaneously • Benefit: •  ensures the lipstick mechanics function smoothly www.burster.com 31/07/14 - 22

23. Latest features USB – output for torque, speed/angle and mechanical powerincl. upgraded version of DIGIVISION (evaluation software) • Plug & Measure • High sampling rate ,display up to 16 channels (option) • Limits, trigger, storage function as well as archive viewer on board. • Power supply via the USB-port (External power supply is not required) • DLL and LabView-driver for free 31.07.2014 / 23 www.burster.de

24. Latest features Two-range Sensor with 2 measuring ranges 1:10 and 1:5/1:4 incl. option angle- and speed measurement • A single sensor for accurate measures in a very wide torque range. • Five fold overload protection for the smaller measuring range and 1.5 fold overload protection for the larger measuring range. • No retooling time at all and only one coupling pair is needed. www.burster.de 31.07.2014 / 24