Datasheet

System 7000
Vishay Micro-Measurements
www.vishaymg.com [e-mail] Document Number: 11271
46 Revision: 12-Oct-06
StrainSmart
®
Data Acquisition System
FEATURES
• Stable, accurate, low-noise signal conditioning
• Measurement accuracy ±0.05%
• Measurement resolution 0.5 microstrain
• Individual input cards for strain gage and strain-gage-
based transducers (Model 7003-8-SG), thermocouples
(Model 7003-8-TC), and sensors with high-level voltage
outputs (Model 7003-8-HL)
• Electronically selectable, built-in bridge completion for
120-, 350-, and 1000-ohm strain gages
• Virtually unlimited number of channels in increments of 8
channels
• Maximum scan rate of 2048 samples per second
• Self calibration traceable to NIST standard
• Simultaneous sampling with anti-aliasing filter and
analog-to-digital conversion for each channel
• Selectable digital filtering of measurement signals
• High-speed Ethernet network interface
DESCRIPTION
Vishay Micro-Measurements System 7000 builds upon the
years of experience gained since the introduction of Systems
4000, 5000, and 6000 by continuing to provide a complete
hardware/software approach to data acquisition, reduction,
and presentation for strain gages and related sensors for
stress analysis testing.
System 7000 hardware is designed to incorporate all the fea-
tures required for precision strain measurement in a high
channel density enclosure. Strain gages, strain-gage-based
transducers, thermocouples, and other sensors with high
level voltage outputs can be intermixed in groups of eight (8)
by choosing the appropriate sensor card for up to 128 chan-
nels in a 4U height, 19-inch rack-mountable scanner
(7000-128-SM). The Ethernet interface allows flexible posi-
tioning of scanners, and multiple scanners can easily be syn-
chronized using a single sync cable (maximum length 100
meters). A system can be configured with virtually an unlim-
ited number of sensors.
System 7000 is a high performance data acquisition instru-
ment with measurement accuracy of ±0.05% of full scale.
Each sensor card employs a 24-bit analog to digital convert-
er enabling 0.5 microstrain resolution. Scan rates up to 2048
samples per second are available for simultaneous reading
of all sensor inputs. A combination of analog and flexible Fi-
nite Impulse Response (FIR) filters are available to provide
adequate anti-alias filtering at all scanning rates. Each sen-
sor card has high-capacity nonvolatile data storage capabili-
ty. Electronically selectable bridge completion resistors allow
the user to choose between 120-, 350-, and 1000-ohm strain
gages through software selection.
Several design features are provided to reduce total cost of
ownership. System 7000 is capable of self-calibration with a
removable calibration reference (7000-SM-VC). Calibration
can be performed anywhere and there is no need to return
the entire system to the factory for calibration. Down-time
while waiting for calibration is essentially eliminated. Input
connectors are RJ-45 type and assembly time is fast using
simple cable crimping tools. Sensor input cards all use com-
mon Analog Input Cards (Model 7003-8-A-I), which thereby
allow users to interchange sensor input cards with analog in-
put cards. Individual scanners can be separated and located
near sensors to reduce sensor cabling costs.