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Kistler 9819A Series Instruction Manual

Press force sensor, retrofitset
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Instruction
Manual
Press Force Sensor
Type 9340A1
Retrofitset
Type 9819A...
9340A1_002-670e-07.24

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Summary of Contents for Kistler 9819A Series

  • Page 1 Instruction Manual Press Force Sensor Type 9340A1 Retrofitset Type 9819A… 9340A1_002-670e-07.24...
  • 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

    Reference press force sensor (pfs) installation ..........30 7.1.1.2 Load application ....................31 7.1.1.3 Calibration process worksheet ............... 32 7.1.1.4 Kistler calibration service ....................... 35 Maintenance work ......................... 35 Troubleshooting ..........................36 Fault-finding and remedy ......................36 Repairing the press force sensor....................36 Technical data ............................. 37 Page 4 9304A_002-670e-07.21...
  • Page 5 Content Press Force Sensor Type 9340A1 ....................37 Dimensions ............................. 38 Accessories (optional) ........................39 Annex ..............................40 10.1 Glossary ............................40 10.2 Measurement uncertainty ......................44 10.3 Linearity ............................45 10.4 Frequency range ..........................48 10.5 Influence of temperature ......................49 10.6 Indexverzeichnis ..........................

  • 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 Notes

    Important notes 2. Important notes It is essential for you to study the following notes, which are for your personal safety during work, and to ensure long term, fault-free operation of this product. For your safety  This product has been thoroughly tested and has left the factory in a perfectly safe condition.

  • Page 8: Unpacking

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Unpacking Check all packaging for transport damage. Report any such damage to the transporters and to the authorized Kistler distributor. Check accessories delivered (see Section 0) before first use of the equipment. Report any missing parts to the autho- rized Kistler distributor.

  • Page 9: Hints On Using This Instruction Manual

    Please keep these instruction manual in a safe place where you can retrieve them at any time. If you lose this instruction manual, please contact your Kistler distributor and ask them for an immediate replace- ment. 9340A1_002-670e-07.24 Page 9...

  • Page 10: General Device Description

    Product testing  Switches, plugs, springs Kistler Press Force Sensors are distinguished by high rigidity and a high natural frequency. The effective, useful frequency range is however determined by the natural frequency of the entire measurement setup. The high resolution capacity permits the measurement of minuscule dynamic changes, even with large forces.
  • Page 11 General device description Thread for mounting pin Quartz Cable connection Hole for tool holder Fig. 1: Sensor setup with transmission of force No gap permitted. Plunger must be up against the sensor. No gap permitted. Tool must be up against the sensor. A tool without suapporting collar can also be used with small forces.
  • Page 12 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… The transmission of force may not take place at the top through the mounting pin and at the bottom through the fastening pins of the tool. The Press Force Sensor contains a pair of ring-shaped quartz crystal plates as an integrated sensor element that is sensitive to pressure.

  • Page 13: Installation And Commissioning

    Installation and commissioning 4. Installation and commissioning 4.1 Important instructions The Press Force Sensor Type 9340A1 is a precision instrument that must be utilized correctly to take full advantage of its specifications and handled carefully in order to preserve them. Please observe the following instructions: ...
  • Page 14 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A…  The Press Force Sensor is installed between the plunger and the tool. The mounting pin that is screwed into the sensor is used for this purpose and can be secured if necessary with Loctite 221.

  • Page 15: Tool Holder

    Installation and commissioning The transmission of pressure force must be carried out exclusively through the flange surfaces on the top and bottom sides of the Press Force Sensor. Type Name 9340A1 Press Force Sensor 9596A10 Mounting pin ≥20 9596A11 Mounting pin ≥30 9596A20 Mounting pin...

  • Page 16: Drive Plate For The Path Sensor

     We recommend cleaning both connection plugs of the connecting cable with Type 1003 cleaning and insulating spray from Kistler or with petroleum ether before connecting them. The plug on the Press Force Sensor is sealed with an O-ring. This is enclosed separately with...

  • Page 17: Retrofit Set Type 9819A

    Only one charge amplifier is required. 4.6 Retrofit set Type 9819A… for manual presses Kistler offers a complete set, comprising Press Force Sensor, XY monitor maXYmos BL, path sensor and the appropriate cables, installation aids and power supply for force-path measurement with process monitoring.
  • Page 18 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Type Nomenclature 9340A1 Press Force Sensor 9596A… Mounting pin 9598A Drive plate for path sensor 1631C1 Connecting cable KIAG 10-32 pos. 55123426 Installation plate for path sensor 2124A.. Displacement sensor 5867B0010 XY monitor maXYmos BL 5867AZ040 Installation set for maXYmos BL...

  • Page 19: Measurement Range And Determining Factors

    Measurement range and determining factors 5. Measurement range and determining factors The following example for Type 9340A1 is used to show how disturbance variables that arise, e.g. shear force, bending moment and torque, influence (i.e., reduce) the normal force Fz. ...

  • Page 20: Calculation Example

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A…  Calculation of an applied bending moment with any given triaxial force, taking az0 into account: = Fy x (az + az) + Fz x ay = Fx x (az + az) + Fz x ax Fig.
  • Page 21 Measurement range and determining factors  Guideline The Press Force Sensor Type 9340A1 is loaded with an axial force of Fz = 50 kN (az = 0 mm), while at the same time a shear force F = 3,1 kN is to be Shear introduced at the height of az = 0 mm.
  • Page 22 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Fig. 12: Load diagram Mb = f(Fv+Fz,F Shear  In accordance with the diagram for the determination of the maximum permissible bending moment, the presence of a given axial force Fz = 50 kN; F shear perm 3,1 kN (az=0) Shear...
  • Page 23 Measurement range and determining factors The originally desired shear force F = 3,10 kN must be Shear reduced to the maximum bending moment on the shear force F = 1,9 kN for az = 0, or the shear force F Shear Shear 3,10 kN can be applied at a height of az = –11,6 mm with...
  • Page 24 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… If however a shear force of F = 1,9 kN is in effect, as in Shear our example, then the maximum permissible torque Mz perm must be reduced in accordance with load diagram Mz Fig.
  • Page 25 Measurement range and determining factors Example: Fig. 15: Nomograph for determining the maximum possible moment load 9340A1_002-670e-07.24 Page 25...

  • Page 26: Operation

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 6. Operation Setting the charge amplifier In conjunction with the Press Force Sensors Types 9323AA ... 9393A we recommend the use of a charge amplifier with sensitivity selection such as Type 5073A... or a ControlMonitor Type 5867...

  • Page 27: Quasistatic Measurements

    Operation Quasistatic measurements With the piezoelectric measuring principle, purely static measurements over any length in time are not possible. Because the charge amplifier is not an ideal component, the charge stored in the range capacitor is not retained for an unlimited time. Leakage currents produce a drift in the order of magnitude of ±0,05 pC/s.

  • Page 28: Tips For Good Measurands

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Tips for good measurands  Always store the measuring instruments in the same room in which measurements are to be carried out.  Keep the connecting cable connected to both the sen- sor and the measuring instrument.

  • Page 29: Calibration And Maintenance

    If it is possible to remove the force measurement assembly, without influencing the pretension and load distributing of the force sensor, the assembly can be sent to a Kistler Calibration Centre for recalibration. If, however, the sensor is integrated into the machine structure, it normally is not possible to remove the force measurement assembly for recalibration.

  • Page 30: Test System Requirements

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 7.1.1.1 Test system requirements Reference measurement chain: The reference measurement chain consists of a calibrated pre-loaded force sensor and charge amplifier. Signal conditioning: The signal readout devices for both the reference and test systems must be equipped with peak-hold functionality.

  • Page 31: Load Application

    Calibration and maintenance 7.1.1.3 Load application A typical load cycle is shown in Fig. 17. 1. The system must be in an unloaded condition to define the zero force bias; 2. Reset the charge amplifiers and, if necessary, the peak hold functions for both the reference and test system measurement channels.

  • Page 32: Calibration Process Worksheet

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 7.1.1.4 Calibration process worksheet Set up the charge amplifier for the maximum range of the reference sensor and the corresponding sensitivity as shown on the calibration certificate. Range: [MU] Sensitivity: Cal. Cert. [pC/MU] REF(F Set up the test system amplifier to approximately determine the charge output of the test sensor.
  • Page 33 Calibration and maintenance Apply load at the working point at least 5 times, note the peak values from both the reference and test systems for each cycle. F ˆ [MU] Q ˆ [pC] Calculate the peak sensitivity for each cycle. Q ˆ...
  • Page 34 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Fig. 18: In-situ calibration procedure Page 34 9304A_002-670e-07.21...

  • Page 35: Kistler Calibration Service

    Traceability must be ensured. Kistler offers the following calibration services: Swiss Calibration Service (SCS) Kistler is accredited as SCS Calibration Center No. 049 for equipment measuring pressure, force, acceleration and electrical charge. To ensure traceability and specified measurement uncertainties, calibration equipment and methods are regularly monitored and audited.

  • Page 36: Troubleshooting

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 8. Troubleshooting Fault-finding and remedy Below is a list of the frequent causes of malfunction and instructions on how to remedy these. If a fault occurs which you cannot correct, please contact your Kistler distributor. Fault Cause Remedy...

  • Page 37: Technical Data

    Technical data 9. Technical data Please note that all technical data and all further infor- mation in this section can be changed at any time without prior notice. 9.1 Press Force Sensor Type 9340A1 Type 9340A1 Measuring range -10 ... 60 Calibrated measuring ranges 0 ...

  • Page 38: Dimensions

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 9.2 Dimensions Type Name 9596A10 Mounting pin 9596A11 Mounting pin 9596A20 Mounting pin 9596A30 Mounting pin 9596A40 Mounting pin 9596A50 Mounting pin 9596A60 Mounting pin 9596A61 Mounting pin 9596A70 Mounting pin Fig.

  • Page 39: Accessories (Optional)

    Technical data Fig. 21: Dimensional drawing mounting pin Type 9596A30…70 (See Table 2) 9.3 Accessories (optional) Type  Plug-mains, 90 - 264 VAC/24 VDC, 5781B5 ready for connection, max. 90 W (3.75 A), configurable country cable  Connecting cable KIAG 10-32 pos. int. – BNC pos. 1939A...

  • Page 40: Annex

    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 41 Annex 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: • additional bending moment acts on a force sensor: →...
  • Page 42 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 43 Annex by the corresponding change in the value of the measurand. Note: sensitivity of piezoresistive and strain gauge sensors is additionally dependent on the excitation current or voltage. Sensor System which produces a definite change in the output signal as a function of the change of the measurand acting on it.

  • Page 44: Measurement Uncertainty

    ±1 % FSO Industrial charge amplifier 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 Random errors, precision, reproducibility Precision or reproducibility is the extent of conformity between independent data measured under specified conditions.

  • Page 45: 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. 10.3 Linearity...
  • Page 46 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Best straight line – mathematical definition The minimization of maximum deviation is known as Chebyshev’s approximation. The best straight line is determined as follows: x = measurand (reference)   Q = sensor charge signal or output signal from the charge amplifier Q (x) = calibration curve, rising and falling ...
  • Page 47 Annex Hysteresis The maximum difference in output, at any measurand value within the specified range, when the value is approached first increasing and then decreasing measurand (source: ANSI/ISA-S37.1). Note: The quartz crystal itself has a scarcely measurable hysteresis. However, the mechanical construction of the sensor can result in slight hysteresis.

  • Page 48: Frequency Range

    Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… 10.4 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

    Annex 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 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… caused by changes in stress in the sensor, which in turn are influenced by the preload or installation conditions. 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.

  • Page 51: Indexverzeichnis

    Annex 10.6 Indexverzeichnis Flange ............13 Frequency analysis ........47 Frequency response ........46 Accessories ............. 37 FSO ............... 39 Accuracy ........... 42, 46 Functional principle, sensor ...... 10, 12 Ansprechschwelle ........... 35 Application ............8 Ground insulation ......... 39 Bending Moment ..........
  • Page 52 Press Force Sensor Type 9340A1, Retrofit Set Type 9819A… Phase response ..........46 Steifheit ............35 piezoelectric ..........40 Systematic errors ........... 42 Polarity ............ 24, 26 Precision ............42 Protection Class ..........38 Technical Data ..........35 Temperature coefficient ..... 35, 41, 48 Temperature error ..........

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