/ 151 FLOW MEASUREMENT FOR COMPONENT TESTING The AVL product line PLU 131 offers a wide range of high precision �� ow meters for all kinds of applications in various fi elds of com ��ustion engines. In addition to standard �� ow meter versions for all kinds of fuels and test �� uids, specialized models for water or urea solution are available. Other device types have been designed for high media pressure up to 200 bar and high media temperature up to 150 °C. The different measuring ranges cover everything from small quantity measurement of 0.05 l/h to high �� ow rates of 300 l/h. The measurement accuracy is 0.1 % of the measured value over the complete measuring range of the individual device types of up to 1:500. MEASUREMENT PRINCIPLE The dual PLU measuring principle entails the combination of a rotatory and a translatory positive displacement meter. The servo-controlled gear counter determines the �� ow volume from the rotation. The dynamic piston sensor controls the engine speed and ensures zero pressure difference ����p �� 0�� ��etween inlet and outlet. This prevents internal leakage �� ow in the sensor. Over the complete measuring range, the measuring device generates no pressure difference in the hydraulic system being measured. APPLICATION The main fi elds of application of the PLU 131 are test ��enches and production lines for automotive fuel supply components. The PLU measurement principle is suita��le for pulsating �� ows and can be applied in direct hydraulic adaptation for the testing of pumps, injectors and control valves on the inlet (upstream) side as well as on the outlet (downstream) side. AVL PLU 131 sensors increase measurement accuracy and reduce measuring time for continuous �� ow measurement. BENEFITS AT A GLANCE • Reduced measurement time due to high-precision �� ow rate measurement �� High �� e��i��ility due to ��road range of media compatibility and extremely large measuring ranges • Reliable results with upstream measurement (high-pressure side) and non-interference between meter and hydraulic system ����p �� 0�� • Low cost of ownership due to outstanding robustness and long-term stability of calibration AVL PLU 131F, PLU 131S, PLU 131U
Solutionskatalog_2017_E
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