Strain
Indicator Calibrator Vishay Model 1550A is atrue
Wheatstone-bridge simulator, the 1550A Strain
Indicator Calibrator presents known and repeatable
resistance changes to the input of the indicator.
Three decades of push buttons are used to produce
incremental resistance changes. The 1550A is NIST-traceable.
Strain Indicator Calibrator Vishay Model 1550A
is a laboratory standard for verifying the calibration
of strain and transducer indicators.
Strain Indicator Calibrator Features:
• True Wheatstone bridge circuitry.
• Simulates quarter, half and full bridge - both
120 Ohm/350 Ohm.
• 3 decades of push buttons.
• Strain range direct reading: +/- 99,900 microstrain...
increments of 100 microstrain.
• Transducer range: +/-49.95 mV/V... increments
of 0.05 mV/V.
• Reversing switch for plus and minus calibration.
• High precision vishay resistors used throughout
to ensure excellent stability.
• Accuracy 0.025 percent - traceable to the U.S.
National Institute of Standards and Technology.