Datasheet

Model V/E-40
Vishay Micro-Measurements
www.vishaymg.com [e-mail] Document Number: 11316
56 Revision: 02-Jun-06
Strain Gage Simulator
FEATURES
• 5 Decade selector switches
• Resistance range: 30.00 to 1111.10Ω in 0.01Ω steps
• High precision Vishay resistors used throughout to ensure
excellent stability
• Accuracy 0.02% of setting
• Simulates tension and compression strain for most widely
used strain gage resistance values
• Simulates a broad range of RTD’s for instrumentation
setup and calibration
A precision decade resistor for accurately simulating the
behavior of strain gages and RTD’s.
DESCRIPTION
The V/E-40 Strain Gage Simulator is an accurate, stable,
compact, five-decade resistor specially designed to simulate
the behavior of strain gages and RTD’s, and for use in a
broad range of measurement and calibration applications.
As a precision strain gage simulator, the V/E-40 can be used
to measure nonlinearity of the instrumentation in quarter-
bridge operation, or to verify instrument calibration over the
anticipated measurement range. It is also well suited to
measuring desensitization of the strain gage circuit due to
the finite resistance of the strain gage leadwire system.
In a similar manner, the V/E-40 can be temporarily
substituted for an RTD over a resistance range of 30.00 to
1111.10 ohms to verify calibration of temperature
measurement instrumentation.
The V/E-40 can also be used in conjunction with a
conventional Wheatstone bridge strain indicator to measure
arbitrary resistances between 30.00 and 1111.10 ohms, or to
eliminate Wheatstone bridge nonlinearity effects when
measuring high post-yield strains in quarter-bridge
operation. In this mode, the resistance or strain gage to be
measured is connected as one arm of a Wheatstone bridge,
the V/E-40 is used as a decade resistor in an adjacent arm,
and the strain measuring instrument as a null detector.
Other applications include use as an investigative tool to
troubleshoot faulty strain gage installations, or as a precision
decade resistor.
SPECIFICATIONS
Accuracy:
0.02% of reading.
Maximum Current:
(To meet accuracy and repeatability specifications:)
120Ω: 65mA; 350Ω: 55mA; 1000Ω: 25mA.
Stability:
±3ppm/°C maximum.
Resistance range:
30.00 to 1111.10Ω in 0.01Ω steps.
Environment:
0° to +120°F [–18° to +49°C], up to 70% relative humidity,
non-condensing.
Size:
3-7/8 H x 9-1/8 W x 3-1/8 D in [98 x 232 x 89mm].
Weight:
1.9lb [0.85kg].
All specifications are nominal or typical at +23°C [+73°F]