2
ICP
3-COMPONENT FORCE LINK OPERATION MANUAL
1.0 INTRODUCTION
PCB Piezotronics 3-component force link sensors are
designed to simultaneously measure dynamic and quasi-
static force measurements in three orthogonal directions;
Fx, Fv, and F
2
.
(Figure 1)
The sensors utilize an array
of precision aligned, quartz sensing crystals stacked in a
preloaded arrangement.
2.0 DESCRIPTION
A link consists of a standard PCB 3-component force
sensor, preloaded between two precision ground plates.
(Figure 2)
The plates are internally threaded to facilitate
fixturing for both tensile and compressive force
measurements. External preloads are not required with
these sensors, as they are internally preloaded during
manufacture.
I
C
P
®
f
o
Caution: Loosening or tightening of the hex nuts will
change the internal preload of the sensor. At this
point, the sensitivity provided on the calibration
certificate will
110
longer represent that of the sensor.
If
this should occur, refer to the service and repair
document for proper information.
Measurements along the z-axis are proportional to
applied compression, tension, and impact forces.
Measurements along the x- and y-axis are proportional
to shear forces imposed upon the sensor.
ICP® force link
sensors
contain built-in, microelectronic
signal
conditioning circuitry to provide clean, low-
impedance output signals that can be transmitted over
low cost cables and in adverse, industrial environments.
Multi-pin connectors facilitate a single point hookup
with common, multi-conductor cable.
Power to operate ICP® sensors is generally in the form
of a low cost, 24-27 VDC, 2-20 mA constant current
supply. PCB offers a number of AC or battery-powered,
single or multi-channel power/signal conditioners, with
or without gain capabilities for use with force sensors.
In addition, many data acquisition systems now
incorporate constant current power for directly powering
ICP® sensors. Because static calibration or quasi-static
short-term response lasting up to a few seconds is often
required, PCB manufactures signal conditioners that
provide DC coupling.
If
questions arise regarding the operation or
characteristics of the force
sensor
products as outlined in
this manual, feel free to contact an experienced
applications engineer from the Force/Torque Division of
PCB toll-free 888-684-0004.
3.0 INSTALLATION
Refer to the installation/outline drawing supplied with
this manual for specific outline dimensions and
installation details for your particular model. The
specification is also included to provide details of the
sensor's characteristic properties.