Data-acq start-up Scalar Acquisition Technology (Livingston, Scotland) announces its first signal-conditioning module for bridge-type sensors. The board is designed to power and signal-condition most strain gauge or piezoresistive sensors, configured as single-, half-, or full-bridge types.
Scalar Acquisition Technology's 3U-sized module provides sensor supply, zero, gain, and calibration functions. It ships with National Instruments's popular LabVIEW configuration software.
Dubbed the SAT-SSC2, the module provides constant-voltage excitation and conditioning for 1-, 2-, and 4-arm resistive bridges. Under computer control you can set gain, offset null, excitation voltage, digital shunt calibration, and whether it's to be used in a full-, half-, or quarter-bridge configuration, using precision configuration resistors.
In operation, automatic bridge balancing copes with a wide range of bridge imbalance conditions, maximizing dynamic range.
The SAT-SSC2's programmable constant-voltage excitation can source up to 10-V. Dedicated remote-sense lines permit the excitation supply regulator to deliver an accurate voltage to the bridge. Gain is programmable in a standard 1, 2, 5 sequence, from 10 to 10,000. The system's frequency response extends up to 600-kHz, supporting high speed sensors. Designed with a noise floor of -96-dB, the SAT-SSC2 is suited for use in 16-bit data acquisition systems.
Low drift, Low Noise
The SAT-SSC2's input stage is also designed for low DC drift and low noise. It also includes provision for a lowpass filter for frequency and noise shaping. Over-range circuitry on each channel is also included. It can alert you to over-voltage conditions.
Input connections are made via on D-type connectors, with provision for twisted pairs as well as shielded cabling. That ensures maximum noise screening and supports separate shunt calibration leads.
On the output side, the module's outputs are buffered, and tout high current-drive capability. That can be useful when driving long cable runs and A/D input stages in data-acq units.
For ease of system integration, the SAT-SSC2 can be supplied, ready assembled in a 3U rack-mount system with outputs using BNC coaxial connectors, or D-type connectors.
Scalar says it can also provide a fully integrated, Web-enabled bridge sensor acquisition system that can be operated from PCs, Apple MACs, or Sun workstations.
For more info, contact Scalar Acquisition Technology, 9 Cochrane Square, Brucefield Industry Park, Livingston, Scotland EH54 9DR. Phone: +44 (0)1506 414806. Fax: +44 (0)1506 416279. E-mail: firstname.lastname@example.org
Check out Scalar's Web site by clicking here.