910XC KISTLER | Alldatasheet

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Piezoelectric force sensors Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN 9101C_003-473e-08.21 Page 1/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C Piezoelectric force sensors, also known as piezoelectric ring force transducers, for precise measurement of tensile and com- pressive forces in highest resolution. The force sensors are thoroughly tested, but are delivered wit- hout calibration certificate and must be calibrated on site after installation.

  • Thoroughly tested, delivered without calibration certificate
  • Linearity including hysteresis ≤±1.5%
  • Extremely high stiffness
  • Very compact design
  • Extremely low threshold
  • Degree of protection: IP68, dependent on cable
  • Operating temperature range -40 ... 120°C
  • No aging, unlimited service life

Description

The 910x family is a piezoelectric (PE) sensor series for force measurement in the z-direction. The force to be measured is transmitted directly to the quartz element located within the sensor. When subjected to a mechanical load, quartz produces an electric charge that is proportional to that load. An outstan- ding property of quartz is the very low threshold, resulting in a high sensor sensitivity which is extremely linear over the entire measuring range. Thus the behaviour in a certain measuring range is practically identical for all PE sensors, independent of their size. This has three unique advantages:

  • Overload protection: Even very small forces can be measured with a sensor with a large measuring range, so that overload protection can be considered without loss of signal quality.
  • High stiffness: To achieve a construction that is as stiff as possible, a larger sensor can also be used without negatively impacting the quality of the measurement signal.
  • Grouping: Multiple sensors can simply be added together by electrically connecting them in parallel to a single charge amplifier. The output voltage is then proportional to the sum of all acting forces. Application For monitoring tasks, force sensors are required that can be easily installed in a machine structure. Robust design and re- liability in continuous operation as well as good repeatability of the measured values are further features of these sensors. The choice of a certain size depends on the installation space available on the one hand and on the force shunt ratio of the installation on the other hand. Application examples
  • Monitoring of press-in forces during assembly, testing, etc.
  • Monitoring of forces during punching and forming
  • Measurement of large forces in force shunt Sensor Mounting Ring force transducers are generally used preloaded in a mounting structure. Types 9101C ... 9107C Fz Details about piezoelectric sensors and their installation can be found in the corresponding user's manual on our home- page www.kistler.com/force.

Piezoelectric force sensors – Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN, Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C 9101C_003-473e-08.21 Page 2/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Technical data --> to ensure the specifications, the sensors must be operated and tested with 20% preload Type 9101C 9102C 9103C 9104C 9105C 9106C 9107C Nominal force kN 20 50 100 140 190 330 700 Load limit kN 25 60 120 160 210 360 770 Sensitivity pC/N -4.4 ±0.3 Linearity incl. hysteresis %FSO ±1.5 Torsional stiffness Nm/° 385 1 955 4 935 10 268 18 469 47 184 190 330 Bending stiffness Nm/° 388 2 016 5 183 11 228 20 822 55 355 216 950 Maximum bending moment 2) (M z = 0), calc. N·m 22 86 217 379 618 1 318 4 229 Temperature sensitivity change Operating temperature range °C -40 ... 120 Insulation resistance (@23°C) W ≥ 5.1013 Threshold N <0.01 Capacitance pF 17±2 33±4 52±5 70±6 93±6 149±15 303±20 Sensor material Cover plate 1.4821 Coat 1.4542 Connector type KIAG 10-32 neg. Degree of protection (IEC 60529) IP check table on page 4 Weight g 7 20 36 70 80 157 370 1) Resistantance of the sensor to shear and bending deformation. (Theoretical) assumption: The sensor is fixed at the bottom, the shear force acts at the top, so that the lever length is equal to the toal sensor height. 2) With a pretension of 50% of the nominal force

Piezoelectric force sensors – Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN, Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C 9101C_003-473e-08.21 Page 3/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Fig. 1: Dimensions Type 9101C … 9107C Typ d D H s t 9101C 6.5 14.5 8 14.85 7.25 9102C 10.5 22.5 10 18.6 7.25 9103C 13 28.5 11 21.65 7.25 9104C 17 34.5 12 24.65 7.25 9105C 21 40.5 13 27.65 7.25 9106C 26.5 52.5 15 33.65 7.25 9107C 40.5 77.2 17 45 6.75 Dimensions metric [mm]Dimensions Type 9101C … 9107C Bild 1: Abmessungen Typ 9001C … 9071C Pretension Piezoelectric force sensors are always used preloaded in a mounting structure. In general, a preloading force of at least 20% of the nominal force is recommended. The recommen- ded, effective measuring range is thereby achieved and the non-linearities in the lowest load range are eliminated. Reasons for the pretension:

  • Highest level of linearity and stability
  • Measurement of tensile and compression forces
  • Use of the high sensor stiffness for a large frequency range
  • Ideal force distribution The pretension must be selected so that the sum of preloading force (Fv) and the process force (±Fz) lies within the measuring range of the sensor at all times (see graphic). Provided it is technologically possible, the average loading of the sensor should be 50% of the nominal force. At this set point, the tolerance with respect to the bending moment is at its greatest (see below, "bending moment"). When pretensioning, the force must be measured with the sensor itself. The sensitivity specified in the technical data is to Fig. 2: Nominal and measuring ranges be used here. The mounting surfaces must be flat, stiff and, if possible, ground. Please refer to the user manual for further details.

Piezoelectric force sensors – Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN, Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C 9101C_003-473e-08.21 Page 4/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Bending moment Bending moments M B (Mx + M y) increase the stress on one side of the sensor and decrease it on the other. This results in an uneven distribution of the axial force on the sensor, that can distort the measuring results. In extreme cases, this can lead to a one-sided overload of the sensor or loss of the frictional connection, which can destroy the structure or cause it to slip. It ultimately depends on the applied axial force Fz which of the two cases occurs first in the event of an impermissible bending moment. Fig. 4: Bending moment as a function of the axial force Fz Bending moment graph Attention Lateral loads F x,y and/or a torque M z further reduce the measuring range. In case of tight safety margins regarding bending moments and suspected lateral loads or torque, better get in touch with our local sales. Example A piezo sensor Type 9103C... is preloaded with F v = 28 kN. What bending moment can be tolerated for process forces in the range Fp = 0 ... 33 kN? We use a normalized formula to calculate the allowable bending moment. Fz is the total axial force on the sensor, so the sum of the preload Fv and the process force Fp. The allowed bending moment depends on the applied total force F z and reaches its peak at 50 kN, half the nominal axial force. In this case, when the process force is at 22 kN (28 kN+22 kN = 50 kN). If the force curve in the process is not known, the lowest value is defined as the maximum load: 122.6 Nm. Fv [%] = 28 kN 100 kN = 28% Fp [%] = 0 kN 100 kN ... 33 kN 100 kN = 0 ... 33% ≙ 122.6 Nm ≙ 170.8 Nm Tensile forces Tensile forces are only applicable as long as the preload is higher than the negative force: they reduce the (pre)load on the sensor, which can be measured accordingly. Fig. 5: maximum bending moment depending on preload and process force Fig. 3: Bending moment

Piezoelectric force sensors – Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN, Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C 9101C_003-473e-08.21 Page 5/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Measuring chain Measure Connect Amplify Connecting cable All sensors of type 9101C ... 9107C have a KIAG 10-32 neg. connector and are compatible with all cable connectors KIAG 10-32 pos. Only highly insulating coaxial cables with low ca- pacitance may be used to connect piezoelectric sensors. These cables generate very little frictional electricity when moving. Kistler uses cables made of high-quality PFA or oil-tight FPM. The IP protection class according to EN60529 on the sensor side is basically dependent on the selected connector. For IP65 the standard cable connector 10-32 KIAG with knurled nut is used. For increased requirements in harsh environments the industrial version 10-32 KIAG pos. int. is applied, which can be welded tightly to the sensor housing if required and achieves IP68. Fig. 6: Measuring chain Compatibilities of cables and charge amplifiers DAQ 5030A 5039A 5073A… 5074A.. 5877B… 5015A… 5018A… 5080A… 5165A… 5167A… KiDAQ Channel 1‐4 1‐4 1‐8 1,4 4,8 4, … ,52 min max 1957A… PFA, steel braiding 0.1 10 KIAG 10‐32 pos. KIAG 10‐32 pos. ✓ ‐‐ ✓ ‐‐‐‐‐‐‐ 1900A23A11.. KIAG 10‐32 pos. hex KIAG 10‐32 pos. hex ✓ ‐ ‐ ✓ ‐‐‐‐‐‐‐ 1900A21A110x KIAG 10‐32 pos. hex KIAG 10‐32 pos. hex ✓ ‐‐ ✓ ‐‐‐‐‐‐‐ 1983AD… FPM 0.1 5 ‐20…200°C IP68 KIAG 10‐32 pos. int. BNC pos. ‐ ✓✓ ‐ ✓✓✓✓✓✓✓ 1979A… FPM 0.1 20 KIAG 10‐32 pos. int. Fischer 103 Triax ‐‐‐‐‐‐‐‐‐‐‐ 1 screwed: IP65 2 welded: IP67 0.4 20 ‐20…200°C IP40 IP67 IP40 Plug screwed IP65 PFA superflexible, drag chain proven 0.3 20 ‐40…200°C IP67 IP40 IP67 FPM flexible steel hose ‐55…200°C Plug welded1 IP67 IP40 IP65 ‐20…200°C IP20 ‐55…200°C Plug screwed IP65 IP40 IP53 IP20 IP40 IP65 IP65 Industrial Amplifier Laboratory Amplifier Cable Cable Properties Length [m] Temp. Range IEC/EN

60529 Connector Sensor Connector

Piezoelectric force sensors – Piezoelectric ring force transducers for tensile and compression forces from 20 kN to 700 kN, Types 9101C, 9102C, 9103C, 9104C, 9105C, 9106C, 9107C 9101C_003-473e-08.21 Page 6/6 © 2020 ... 2021 Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland protected by various intellectual property rights. For more details visit www.kistler.com This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. Accessories (optional) Type

  • Special grease 1063
  • Preloading screw for preloads for compression force measurement, 9422A11 including centering sleeve … 9422A51
  • Preloading element screw for preloads for pressure and tensile force 9420A11 measurement … including mounting accessories 9420A71 Mounting accessories for PE force sensor 910xC (optional)
  • Force distributing ring 95x5
  • Spherical washer 95x3
  • Insulating washer 95x7
  • Force distributing cap 95x9 Cables (optional)
  • Connection and extension cables (s. table on page 4) Piezoelectric force sensor Range 0 … 20 kN 1 Range 0 … 50 kN 2 Range 0 … 100 kN 3 Range 0 … 140 kN 4 Range 0 … 190 kN 5 Range 0 … 330 kN 6 Range 0 … 700 kN 7 Ordering key Type 910 C