AEI Flow Measurement System
The Flow Measurement System by AEI Technologies utilizes a Hans Rudolph Pneumotach [PNT] as the device to convert flow to differential pressure. This differential pressure is measured by a very accurate Differential Pressure Sensor and produces a voltage proportional to flow. This voltage is enhanced by a specialized look-up table to provide an accurate Flow Measurement. The look-up table was developed from national laboratory test data utilizing the System over an extreme physiological flow range with an accuracy of 0.3%.
Hans Rudolph PNT Service & Instruction Manual
A Comparison of Response Characteristics of Airflow and Pressure Transducers Commonly Used in Rhinomanometry, Frye and Doty, IEEE Transactions on Biomedical Engineering, October 1990.