The high-pressure piston prover is at the top of the calibration chain for flow measuring devices in the gas transport networks of Germany and Europe. It is implemented in pigsar™, a calibration facility for gas flow measuring devices, which is operated as a grid-connected test bench. Due to econonical and technical reasons, pigsar™ will be extended by a new, significantly larger test stand part, which will be designed as a closed-loop system. The Physikalisch-Technische-Bundesanstalt (PTB) is therefore building a new primary standard, which significantly larger and new, untested technology, the so-called Flow Comparator. Due to the new concept and the closed-loop system, the dynamic behaviour and interactions of the two systems have to be determined.
Within the framework of the project the dynamic behaviour of the system is to be investigated experimentally and numerically . For the experimental investigations, a prototype of the Flow Comparator is available, which is operated under atmospheric conditions. Based on this, a numerical model is developed in Modelica®, which describes the dynamic behaviour of the comparator. The aim is to use the model to optimize the overall concept under high pressure.
Contact: Sukhwinder Singh
