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Dynamic measurements now fit for calibration

Licence partner wanted
Especially interesting for
  • component and materials testing
  • the automotive industry (e. g. crash tests, engine performance tests)
The dynamic bridge standard simulates the dynamic behaviour of DMS bridges and is used for the calibration of measuring amplifiers.

To measure dynamic mechanical quantities such as force or pressure, (mostly strain-gauge-based) sensors are used. The signal provided by these sensors is amplified, filtered, linearized, and normalized by measuring amplifiers, in short: processed. Not only the sensors, but also the corresponding measuring amplifiers have to be calibrated with regard to their amplification factors, linearity, and phase. For dynamic (temporally variable) operation, PTB has developed a bridge standard which allows these measuring amplifiers to be calibrated for practically any temporally variable voltage curve up into the kHz range.