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Force

Multicomponent Force Plate

with Glass Top Plate for Biomechanics, Fz 0 ... 10 kN

Type 9285BA

Multicomponent force plate with glass top plate for measuring

ground reaction forces, moments and the center of pressure in

biomechanics.

• Glass top plate allows recording of contact surface

• Wide measuring range

• Excellent measuring accuracy

• Good accuracy of center of pressure (COP)

• Threshold Fz <250 mN

Description

Multicomponent force plate Type 9285BA consists of a base

frame on which four piezoelectric 3-component force sensors

under a high preload are mounted. A 600x400 mm triple-layer

composite glass plate is mounted on these sensors. The very

low crosstalk values of the sensors in conjunction with the spe-

cial design principle ensure very good accuracy of the center of

pressure. Type 9285BA has a built-in charge amplifier compat-

ible with all of the common motion analysis systems.

Application

This force plate is designed for special gait and balance analysis

applications. The glass plate allows simultaneous force meas-

urement and photographic or cinematographic recording of

the contact surface from below. Despite the wide measuring

range (0 ... 10 kN), this force plate offers excellent accuracy

and linearity across the entire spectrum of applications and

guarantees overload protection up to 12 kN. A larger force

plate with external dimensions of 900x600 mm is available

on request.

Technical Data

Dimensions

mm

600x400x150,4

Range

Fx, Fy

kN

–2,5 ... 2,5

Fz

kN

0 ... 10

Overload

Fx, Fy

kN

–6/6

Fz

kN

0/12

Linearity

%FSO

≤±0,5

Hysteresis

%FSO

≤0,5

Crosstalk

Fx <–> Fy

%

<±2

Fx, Fy –> Fz

%

<±2

Fz –> Fx, Fy

%

<±0,5

Rigidity

x-axis (ay = 0)

N/μm

≈120

y-axis (ax = 0)

N/μm

≈115

z-axis (ax = ay = 0) N/μm

≈25

Natural frequency

fn (x, y)

Hz

≈300

fn (z)

Hz

≈500

Operating temperature range

°C

0 ... 60

Weight

kg

45

Degree of protection

EN 60529:1992

IP65

Refractive index of glass top plate

n

≈1,52

z

x

y