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Air flow measuring device AVL FLOWSONIX™ Air
ultrasonicmassprocess

air flow measuring device
air flow measuring device
air flow measuring device
air flow measuring device
air flow measuring device
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Characteristics

Measured value
air flow
Technology
ultrasonic, mass
Applications
process
Configuration
compact

Description

Measuring success AVL FLOWSONIX™ Air Air consumption measurement device Because air consumption is a vital reference value in emission certification, OEMs need to ensure an accurate measuring process to meet ever stricter regulations. Therefore, AVL has created the innovative AVL FLOWSONIX™ Air , an air consumption measurement device that is fast, accurate and robust. How Does it Work? AVL FLOWSONIX Air measures intake air mass flow with high accuracy, a large downturn ratio and fast response time. It consists of three components – the measuring head, evaluation unit and two short inlet and outlet pipes. These are designed to have as little influence on the engine as possible. Only a small pressure drop (0.25 kPa) occurs in the measurement head, which results in a negligible influence on the engine. Its flexible design allows for a quick and easy installation on any engine type. With a wide measurement range of 1:70 this means that only two pipe diameters are required – light duty (DN 100) and heavy duty (DN 150). Its < 5* DN up-stream and down-stream tubing needs little space. This small size, and a power consumption of just 25 W, results in a compact and efficient, yet powerful system. Ultrasonic Measurement Technology The FLOWSONIX Air uses an ultrasonic transit-time differential technique to accurately measure air mass flow in the intake. Two ultrasound pulses – one propagating into the air flow and one against it – are measured to determine air consumption.

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