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.
Dynamic measurements now fit for calibration
Contact
Harald Schnatz
Department 4.3 Quantum Optics and
Unit of Length
Phone: +49 (0)531 592-4300
E-mail: harald.schnatz(at)ptb.de
klaus.wendt(at)ptb.de