A new primary approach for dynamic and periodic pressure transducer calibration

Inhalt:
Pressure transducers are frequently used in dynamic environments such as combustion engines, aerospace applications or for industrial process control. Like for every measurement task it is essential to know the deviation of the obtained measurement result even in a dynamical environment. But although pressure sensors are used in dynamical environments no standardised method exists to determine the frequency response of the pressure sensor. And for this reason the dynamical performance of a raw or packaged pressure sensor cannot be quantified. Due to this lack of investigation methods the authors have made an effort to develop a primary method to calibrate pressure transducers dynamically. This method allows to measure the frequency response with sufficient pressure amplitudes in a frequency range up to 10 kHz. In the paper the pistonphone based apparatus is presented. The general working principle is discussed and the primary approach to calculate the dynamical, periodic pressure is shown.