Kistler MiniDyn 9119AA1 Instruction Manual
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Kistler MiniDyn 9119AA1 Instruction Manual

Multicomponent dynamometer
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Instruction
Manual
MiniDyn
Multicomponent
Dynamometer
up to 4 000 N
Type 9119AA1
9119AA1_002-622e-02.15

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Summary of Contents for Kistler MiniDyn 9119AA1

  • Page 1 Instruction Manual MiniDyn Multicomponent Dynamometer up to 4 000 N Type 9119AA1 9119AA1_002-622e-02.15...
  • Page 2 Instruction Manual MiniDyn MiniDyn Multicomponent Multicomponent Dynamometer up to Dynamometer 4 000 N up to 4 000 N Type 9119AA1 Type 9119AA1 9119AA1_002-622e-02.15...
  • Page 3 Information in this document is subject to change without notice. Kistler reserves the right to change or improve its products and make changes in the content without obligation to notify any person or organization of such changes or improvements.

  • Page 4: Table Of Contents

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Contents Introduction ........................... 4 Important Information ........................5 For Your Safety ........................5 Hints for Handling this Device ....................6 Tips on Using the Instruction Manual ................... 7 What Happens When There are Changes? ................7 General Device Description ......................
  • Page 5 Introduction Accessories ........................... 35 Included Accessories ......................35 Optional Accessories ......................35 Ordering Code ..........................38 Appendix ............................39 11.1 Glossary ..........................39 11.2 Measurement Uncertainty ....................43 11.3 Linearity ..........................44 11.4 Frequency Range ........................ 46 11.5 Influence of Temperature ....................47 Total pages 47 9119AA1_002-622e-02.15 Page 3...

  • Page 6: Introduction

    It will help you with the installation, maintenance, and use of this product. To the extent permitted by law Kistler does not accept any liability if this instruction manual is not followed or products other than those listed under Accessories are used.

  • Page 7: Important Information

    Important Information 2. Important Information It is essential to follow the instructions below for your own personal safety when working and to ensure long-lasting, trouble-free operation of the device. 2.1 For Your Safety  This device has been thoroughly tested and was perfectly safe when it left the factory.

  • Page 8: Hints For Handling This Device

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 2.2 Hints for Handling this Device  You must only work with the dynamometer in specified environmental and operating conditions  Insulation resistance crucial piezoelectric measurements; it must be about 100 TΩ (but at least 10 TΩ) ...

  • Page 9: Tips On Using The Instruction Manual

    We always recommend that you read the entire Instruction Manual. But if you are in a hurry and are already familiar with Kistler dynamometers, you only have to read the particular information you need. We have tried to design this manual to make it easy for you to directly access the information you are looking for.

  • Page 10: General Device Description

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 3. General Device Description 3.1 What is a Multicomponent Dynamometer Used for? The multicomponent dynamometer is used for dynamic and quasistatic measurement of the 3 orthogonal components of any force acting on the cover plate (F and F The dynamometer is extremely rigid and therefore has a high natural frequency.

  • Page 11: Functional Principle

    General Device Description 3.2 Functional Principle The force to be measured is applied via a cover plate and distributed to four, 3-component force sensors arranged between the cover plate and the two base plates. Each force sensor contains three quartz crystal plate pairs, of which one is sensitive to pressure in the z direction and the other two are sensitive to shear in the x and y directions.

  • Page 12: Dynamometer Construction

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 3.3 Dynamometer Construction The dynamometer consists of four 3-component force sensors, mounted under high preload between two base plates and one cover plate. This preload is the requirement for friction force transmission.

  • Page 13: Mounting, Installation And Initial Startup

    Mounting, Installation and Initial Startup 4. Mounting, Installation and Initial Startup 4.1 Important Information The Type 9119AA1 multicomponent dynamometer is a precision instrument, with inherent accuracy that will only remain useful and intact if the device is carefully handled. It is therefore important to observe the following instructions: ...

  • Page 14: Mounting The Dynamometer

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 4.2 Mounting the Dynamometer To mount the dynamometer properly, please note the following:  The dynamometer must only be installed by persons who are familiar with the device and who are suitably qualified for this work ...
  • Page 15 Mounting, Installation and Initial Startup The bottom surface of the dynamometer is ground, i.e. precision machined. The device must therefore only be installed on mounting surfaces that are ground or machined to the same standard. The specific alignment of the force sensors requires the quality of the mounting surface to be meticulously monitored.
  • Page 16 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 The dynamometer can be mounted in two different ways. a. With 8 M4x25 screws For this type of mounting, 8 M4 threaded bores (minimum thread length: 12 mm) are required on the assembly table.

  • Page 17: Basic Connection And Cabling Of The Measuring System

    Mounting, Installation and Initial Startup 4.3 Basic Connection and Cabling of the Measuring System Charge amplifiers convert the electric charges output by the dynamometer (picocoulomb = pC) into proportional voltages that can be displayed, recorded or processed with the usual instruments. Please note the following information when cabling the measuring system ...

  • Page 18: Basic Connection And Cabling Of The Measuring System

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 4.5 Basic Connection and Cabling of the Measuring System Charge amplifiers convert the electric charges yielded by the dynamometer (pC) into proportional voltages that can be displayed, recorded or processed with the usual instruments.

  • Page 19: Measuring System For 3-Component Measurement

    Mounting, Installation and Initial Startup 4.6 Measuring System for 3-Component Measurement (F The diagram below shows the elements required to connect a dynamometer to a multichannel charge amplifier (e.g. Type 5080Axx3x001). This is a ground-isolated measuring chain with a 3-wire cable. MiniDyn Connecting cable Multichannel charge amplifier...

  • Page 20: 3-Component Force Measurement

    If it is possible that the dynamometer could be damaged by the loads that occur, please contact Kistler customer service, where this loading can be calculated and an assessment made.

  • Page 21: Measuring System For 6-Component Measurement (F X , F Y , F Z , M X , My, M Z )

    Mounting, Installation and Initial Startup 4.8 Measuring System for 6-Component Measurement , My, M The diagram below shows the elements required to connect a dynamometer to a multichannel charge amplifier (e.g. Type 5080Axx8x004). This is a ground-isolated measuring chain with an 8-wire cable. MiniDyn Connecting cable Multichannel charge amplifier...
  • Page 22 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 The individual forces and torques can be calculated as follows: x1+2 x3+4 y1+4 y2+3 b ⋅ (F – F – F ) · kM a ⋅ (–F – F ) ⋅ kM b ⋅...

  • Page 23: Operation

    Operation 5. Operation 5.1 Range Selection With Type 9119AA1 multicomponent dynamometers, it is advisable to use charge amplifiers with sensitivity adjustment (e.g. Type 5080A...). Set the sensitivities for channels F and F in accordance with the details in the calibration sheets. This directly adjusts the output voltage to the value appropriate to the selected scale (...N/V).
  • Page 24 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 a Set the amplifier to <Reset>. Choose the range for F as follows: · (amplifier <Long Time Constant>) b Switch the amplifier to <Operate>. c Apply F (start the machine tool) d Once the force is read out and/or recorded, switch the amplifier back to <Reset>, so that the charge relevant to is dissipated...

  • Page 25: Useful Frequency Range

    Operation 5.3 Useful Frequency Range At the upper frequency limit, the dynamometer frequency behavior has relatively little damped oscillation. The frequencies can be resolved up to about a third of their natural frequency without any notable measuring errors. The lower frequency limit is defined by the charge amplifier drift and the insulation quality.
  • Page 26 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Rule The better the quartz force link (dynamometer) is mounted on the table underneath and the better the force application part is mounted on the element, the higher the resonance frequency and therefore the useful frequency range of the measuring system.

  • Page 27: Piezoelectric Force Measurement

    Operation Piezoelectric Force Measurement Accuracy With a piezoelectric measuring chain, the question of accuracy cannot simply be answered with a numerical value. As well as the specified sensor and charge amplifier errors, the result is also influenced by temperature and other environmental factors.
  • Page 28 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Temperature error A change in temperature causes the force sensor to experience internal thermal voltages, which pro-duce an error in the measurement. We define this error as: temperature error [N/°C]. The extent of the error depends on the sensor and on the preload elements and can be experimentally determined for a quartz force link.
  • Page 29 Operation Cables Cables and connectors must be kept clean and dry, otherwise electrical drift will increase the error. The drift of a measuring chain can be measured if the sensor is not under load and the charge amplifier is set to <Operate>. If the electrical drift is greater than specified, the insulation value of the measuring chain is inadequate.

  • Page 30: Tips For Better Measuring Results

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Tips for Better Measuring Results  Always store the measuring instruments in the room in which the measurements are to be taken  Where possible, leave the cable permanently connected to the sensor ...

  • Page 31: Maintenance

    Quality management systems, such as those that are ISO 9001-compliant, demand documentation and periodic recalibration of the measuring device. Kistler recommends that this type of re-calibration is carried out every two years. 9119AA1_002-622e-02.15 Page 29...

  • Page 32: Maintenance Work

     Regularly clean the vacant nine-pin dynamo-meter plug connection or the connecting cable with a cleaning agent such as the Kistler Type 1003 cleaning and insulating spray or pure benzine Page 30 9119AA1_002-622e-02.15...

  • Page 33: Fault Elimination

    Fault Elimination 7. Fault Elimination 7.1 Troubleshooting The typical causes of faults and tips for remedying them are listed below. If you cannot remedy a fault, please contact your Kistler distributor. Fault Cause Remedy No measurement signal Signal lead break...

  • Page 34: What To Do If The Dynamometer Is Faulty

    7.2 What to Do if the Dynamometer is Faulty If your dynamometer is faulty, please note the following:  Get in touch with your Kistler distributor and advise them of the delivery of the faulty device  Send the faulty dynamometer to the Kistler distributor in its original packaging ...

  • Page 35: Technical Data

    Technical Data 8. Technical Data Please note that all the technical data and all the other information contained in this chapter may be changed at any time without notice. 8.1 MiniDyn Type 9119AA1 –4 ... 4 Measuring range (centric), indiv. components; Force application 10 mm above cover plate N·m –125 ...

  • Page 36: Dimensions

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 8.2 Dimensions 8.2.1 Dynamometer Type 9119AA1 dimensions Fig. 9: MiniDyn Type 9119AA1 Page 34 9119AA1_002-622e-02.15...

  • Page 37: Accessories

    Accessories 9. Accessories 9.1 Included Accessories Included with Type 9119AA1: Mat. Nr.  Mounting screws (8 x M4x25) 65012704 9.2 Optional Accessories  Connecting cable, 3-wire 1687B...  Connecting cable, 3-wire 1687BQ02 9119AA1_002-622e-02.15 Page 35...
  • Page 38 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1  Connecting cable, 3-wire 1689B…  Connecting cable, 8-wire 1677A… Page 36 9119AA1_002-622e-02.15...
  • Page 39 Accessories  Connecting cable, 8-wire 1679A… For other cables, see data sheet 1687B_000-545d Type  Cleaning spray 1003  Insulation tester 5493 Fig. 10: Cleaning and insulation spray, 250 ml, Type 1003 Fig. 11: Type 5493 insulation tester 9119AA1_002-622e-02.15 Page 37...

  • Page 40: Ordering Code

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 10. Ordering Code Ordering code Type/Mat.No.  Multicomponent dynamometer 9119AA1 up to 4 kN, cover plate 39x80 mm Included accessories  M4x25 mounting screws (eight) 65012704 Page 38 9119AA1_002-622e-02.15...

  • Page 41: Appendix

    The cable capacitance, and thus the length of the Cable capacitance connecting cable, has no noteworthy influence on the measuring result when Kistler special cables and Kistler charge amplifiers are used. Calibrated range Measuring range or part of the measuring range for which the sensor has been calibrated.
  • Page 42 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Disturbance Quantity that is not the measurand but that affects the result of the measurement. The contributions are expressed in terms of the measurand related to the acting quantity. Examples: •...
  • Page 43 Repeated loading (1 … 3 times) of a calibration object prior to the calibration cycles applied for eliminating stresses within the object and/or for ensuring a rigid force application. quasistatic Describes the ability of Kistler sensors and charge amplifiers to undertake short-term measurements or DC-similar measurements. see "Measuring range" Range...
  • Page 44 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Sensitivity Nominal value or calibrated value stated in the calibration certificate of the change in the response of a sensor divided by the corresponding change in the value of the measurand.

  • Page 45: Measurement Uncertainty

    ± 0,2 ... 0,5 % FSO Industrial charge amplifier ± 1 % FSO Higher accuracy can be achieved with the following procedures: Calibration in the Kistler factory  Calibration with charge amplifier Type 5395A  Restriction of the temperature range ...

  • Page 46: Linearity

    Errors due to zero drift caused by influences changing with time, such as the temperature, are thus basically excluded. With Kistler piezoelectric measuring chains, a typical repeatability within 0,1 % FSO can be assumed. 11.3 Linearity...
  • Page 47 Appendix Best straight line – mathematical definition The minimization of maximum deviation is known as Chebyshev’s approximation. The best straight line is determined as follows: = measurand (reference)   = sensor charge signal or output signal from the charge amplifier ) = calibration curve, rising and falling ...

  • Page 48: Frequency Range

    MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 11.4 Frequency Range Because of their mechanical quality, piezoelectric sensors have very low damping. The useful frequency range is limited in the upwards direction by the increasing resonance rise. Key: f Measuring frequency Natural frequency Amplitude ratio...

  • Page 49: Influence Of Temperature

    Appendix In their dynamic behavior, piezoelectric sensors are superior to all other measuring methods. Their high rigidity results in the highest possible natural frequencies. Piezoelectric sensors are thus ideal for measuring measurands which change rapidly over time. Their dynamic behavior is thereby largely determined by the surrounding structure.
  • Page 50 MiniDyn Multicomponent Dynamometer up to 4 000 N, Type 9119AA1 Temperature gradient error (dynamic error) A temporary change in the output signal is denoted as temperature gradient error, when the temperature of the environment or surrounding medium changes with a certain rate.

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