“High
Performance Bridge Sensor Conditioner”
Low
Cost, High Performance Signal Conditioning For Bridge Sensors
Livingston,
Scotland, UK 28th April 2004 : Scalar Acquisition Technology
announces its first full featured, signal conditioning
module for bridge type sensors. The board is designed
to power and signal condition most strain gauge or piezoresistive
devices presently on the market, whether they be configured
as single, half or full bridges. The compact 3U modules
meet the most demanding 1-, 2-, and 4-arm bridge applications
allowing a sophisticated, all-inclusive system to be
assembled providing sensor supply, zero, gain and calibration
functions. The card offers very high measurement accuracy
and wide bandwidth despite the modest price tag and comes
complete with LabView configuration software for ease
of system integration.
The
SAT-SSC2 provides constant voltage excitation and conditioning
for 1-, 2-, and 4-arm resistive bridges and features computer
control of gain, offset null, excitation voltage, digital
shunt calibration and full/half/quarter bridge configuration.
Precision bridge configuration resistors are supplied with
the board to complete the bridge for quarter, half, or
full bridge configurations. Automatic bridge balancing
copes with a wide range of bridge imbalance conditions,
maximizing dynamic range at all times.
The
SAT-SSC2 features a programmable constant voltage excitation
supply that can source up to 10 volts. Dedicated remote
sense lines allow the excitation supply regulator to deliver
an accurate voltage to the bridge. Gain is programmable
in 1, 2, 5 sequence from 10 to 10,000 and the frequency
response extends up to 600kHz allowing the use of very
high speed sensors. Designed with a noise floor of –96dB,
the SAT-SSC2 is ideally suited for use in 16 bit data acquisition
systems.
The
SAT-SSC2 input stage has been designed for low DC drift
and low noise with provision for a low pass filter for
frequency and noise shaping. Outputs are fully buffered
and have high current drive capability to assist with the
driving of long cable runs and the A/D input stages in
data acquisition units. Over-range circuitry on each channel
alerts the user to over-voltage conditions. These features
make the SAT-SSC2 data acquisition system ready without
the need for any intervening circuitry.
Input connections are on ‘D’ type connectors with provision for
twisted and shielded cabling, for maximum noise screening and also allowing
for separate shunt calibration leads.
For
ease of system integration, the SAT-SSC2 can be supplied,
ready assembled, in a 3U rack mount system with outputs
on BNC or ‘D’ type connectors. In addition,
the 3U card format makes integration into existing standard
19” equipment simple.
For
users with complete signal conditioning and data acquisition
requirements, Scalar can provide a fully integrated, web
enabled, bridge sensor acquisition system which can be
operated from a wide range of platforms including PC, Apple
MAC and SUN Workstation.
Editorial
Contact : Steve Tomlinson,
Sales and Marketing Director,
Scalar Acquisition Technology,
9 Cochrane Square,
Brucefield Industry Park,
Livingston,
EH54 9DR.
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