9281E KISTLER | Alldatasheet

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Technical content

©2008 ... 2014, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com Kistler is a registered trademark of Kistler Holding AG. 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. Page 1/4 Force Multicomponent Force Plate for Dynamic Applications in Biomechanics, Fz –10 ... 20 kN 9281E_000-711e-02.14 Type 9281E... Multicomponent force plate with wide range for measuring ground reaction forces, moments and the center of pressure in biomechanics.

  • Extremely wide measuring range
  • Excellent measuring accuracy
  • High natural frequency
  • Versatile
  • Threshold Fz <250 mN

Description

The multicomponent force plate Type 9281E... consists of a 600x400 mm aluminum sandwich top plate of advanced, lightweight construction and four built-in piezoelectric 3-com- ponent force sensors. Thus it is extremely rigid overall, and al- lows measurements over a very wide useful frequency range. Thanks to the special properties of the piezoelectric sensors, the plate is highly sensitive and can simultaneously measure very dynamic phenomena involved in a wide range of applica- tions. Application This force plate is designed specifically for use in basic research and sport. Its extensive range and high rigidity allow it to be employed across a very wide spectrum of measuring tasks and application sectors. Despite the very generous measuring range of –10 ... 20 kN, it offers excellent accuracy and linearity, and even under a large preload allows precise measurement of minute forces. In all these situations the plate can be mounted in any position without affecting the measurement result in any way. The Type 9281EA has an built-in charge amplifier compatible with all of the common motion analysis systems. Technical Data Dimensions mm 600x400x100 Measuring range Fx, Fy kN –10 ... 10 Fz kN –10 ... 20 Overload F x, Fy kN –15/15 Fz kN –10/25 Linearity %FSO <±0,2 Hysteresis %FSO <0,3 Crosstalk F x <–> Fy % <±1,5 Fx, Fy –> Fz % <±1,5 Fz –> Fx, Fy % <±0,51) Rigidity x-axis (ay = 0) N/µm ≈250 y-axis (ax = 0) N/µm ≈400 z-axis (ax = ay = 0) N/µm ≈30 Natural frequency fn (x, y) Hz ≈1 000 fn (z) Hz ≈1 000 Operating temperature range °C 0 ... 60 Weight kg 16 Degree of protection EN 60529:1992 IP65 1) inside sensor rectangle z x y

©2008 ... 2014, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com Kistler is a registered trademark of Kistler Holding AG. 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. Page 2/4 Multicomponent Force Plate for Dynamic Applications in Biomechanics, Fz –10 ... 20 kN , Type 9281E... 9281E_000-711e-02.14 Force Plate with Built-in 8-Channel Charge Amplifier, Type 9281EA Calibrated range Fx, Fy kN 0 ... 5 Fz kN 0 ... 20 Calibrated partial range Fx, Fy kN 0 ... 1,25 Fz kN 0 ... 5 Sensitivity range 1 Fx, Fy mV/N ≈402) Fz mV/N ≈182) Sensitivity range 4 Fx, Fy mV/N ≈2,02) Fz mV/N ≈0,92) Ratio ranges 1:2:3:4 1:5:10:203) Threshold mN <2504) Drift mN/s <±10 Supply voltage VDC 10 ... 30 Supply current mA ≈45 Output voltage V 0 ... ±5 Output current mA –2 ... 2 Control inputs (optocoupler) V 5 ... 45 mA 0,4 ... 4,4 Force Plate without Charge Amplifier, Type 9281E Calibrated range F x, Fy kN 0 ... 10 Fz kN 0 ... 20 Calibrated partial range Fx, Fy kN 0 ... 1 Fz kN 0 ... 2 Threshold F x, Fy, Fz mN <50 Sensitivity F x, Fy pC/N –7,52) Fz pC/N –3,82) 2) nominal value 3) ±0,5 % accuracy 4) only range 1 Conforms to the ä safety standards (73/23/EG) for electrical equipment and systems: EN 60601-1:2005, EN 61010-1:2001 and the EMC standards (89/336/EG): EN 60601-1:2005 (EN 55022 Class B), EN 61000-6-3:2004 (EN 55022 Class B), EN 61000-6-4:2001 (EN 55011 Class B), EN 60601-1:2005, EN 61000-6-1:2001, EN 61000-6-2:2005 Dimensions Measuring element Measuring element Measuring element Measuring element Built-in charge amplifier Mounting frame Type 9423 Force Plate Type 9281E... Fig. 1: Dimensions of multicomponent force plate Type 9281E...

©2008 ... 2014, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com Kistler is a registered trademark of Kistler Holding AG. 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. Page 3/4 Multicomponent Force Plate for Dynamic Applications in Biomechanics, Fz –10 ... 20 kN , Type 9281E... 9281E_000-711e-02.14 BioWare provides several performance specific evaluations. Parameters of Countermovement Jump CMJ Fig. 9: Force gradient (Explosivity) Fig. 8: Jump height (COM) Fig. 7: Power Fig. 6: Jump force Other parameters

  • Acceleration, velocity and displacement of the center of mass (COM)
  • Work, energy, impulse
  • Statistics, digital filters BioWare® BioWare software is the engine behind the force plate system. It collects data from the force plates, converts the trials into useful information and plots the results. The force plates and charge amplifiers are fully remote controlled by BioWare thus making the system extremely flexible and easy-to-use. Parameters of Gait Fig. 2: Ground reaction forces (GRF) Fig. 5: Force vector Fig. 4: Frictional torque Tz Fig. 3: Center of pressure (COP) Other functions
  • Coefficient of friction (COF)
  • Frequency analysis, statistics, digital filters
  • Full Windows® functionality Windows® is a registered trade mark of Microsoft Corporation.

©2008 ... 2014, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, info@kistler.com, www.kistler.com Kistler is a registered trademark of Kistler Holding AG. 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. Page 4/4 Multicomponent Force Plate for Dynamic Applications in Biomechanics, Fz –10 ... 20 kN , Type 9281E... 9281E_000-711e-02.14 Included Accessories Type/Art. No. For Type 9281E...

  • 1 Set shims 7.050.011
  • 4 Eye bolts M6 6.170.007 with washer 6.220.040
  • 4 Hexagon socket head cap screws 6.120.106 M12x25
  • 1 Hexagon socket wrench 1391
  • 1 Voltage equalizing cable 5.590.175
  • 4 Installation handles 7.511.437 Optional Accessories Type/Art. No. For Type 9281EA with built-in charge amplifier
  • 16ch DAQ-System for BioWare (USB 2.0) 5691A1
  • Connection cable for 5691A, angle plug 1759A...
  • 64ch DAQ-System for BioWare (USB 2.0) 5695B1
  • Connection cable for 5695B, angle plug 1700A105A…
  • External control unit (BNC out) 5233A2
  • DAQ system BioWare (PCI-Bus) 2812A... Multicomponent Force Plate with charge output – with built-in charge amplifier A Ordering Key Type 9281E Typical Measuring Chains Fig. 10: Configuration of a typical measuring chain with Kistler DAQ system BioWare® Force plate with charge amplifier Type 9281EA Connection cable Type 1759A... DAQ system (USB 2.0) Type 5691A1 Laptop (provided by user) with BioWare software Fig. 11: Configuration of a typical measuring chain with DAQ system provided by user Ch 1 = Fx 1+2 Ch 5 = Fz 1 Ch 2 = Fx 3+4 Ch 6 = Fz 2 Ch 3 = Fy 1+4 Ch 7 = Fz 3 Ch 4 = Fy 2+3 Ch 8 = Fz 4 Force plate with charge amplifier Type 9281EA Connection cable Type 1757A... External Control Unit (8xBNC neg.) Type 5233A2 DAQ system provided by user (8 analog channels) BioWare® is a registered trade mark of Kistler Holding AG. For Type 9281E with charge output
  • External charge amplifier 9865E...
  • Connection cable, angle plug connector 1686A...
  • DAQ system BioWare (PCI-Bus) 2812A... Mounting frame for Type 9281E...
  • Standard mounting frame 9423
  • Other mounting frames for multiple on request installations