Title :
Wide range pyroelectric anemometers for gas flow measurements
Author :
Hsieh, H.Y. ; Spetz, A. ; Zemel, J.N.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania Univ., Philadelphia, PA, USA
Abstract :
Studies of pyroelectric anemometers (PAs) have demonstrated that these sensors have an extraordinarily wide operational range and excellent resolution. Measurements were conducted in two structures: a 3.3-mm-diameter pipe with an anemometer located in the center of the pipe and a 4.5-cm-diameter pipe with anemometers placed in the center and on the walls of the pipe. These measurements demonstrated that the PA can detect flows from approximately 1 mL/min to over 20 L/min in the 3.3-mm-diameter tube. Based on the measurements, It is concluded that the PA shows promise as a good flow transfer standard and as a candidate for monitoring extremely low flow rates.<>
Keywords :
anemometers; calibration; electric sensing devices; flow measurement; measurement standards; pipe flow; pyroelectric devices; 3.3 mm; 4.5 cm; flow transfer standard; gas flow; monitoring; pipe; pyroelectric anemometers; Crystalline materials; Crystallography; Crystals; Dielectric materials; Ferroelectric materials; Fluid flow; Fluid flow measurement; Magnetic materials; Pyroelectricity; Temperature;
Conference_Titel :
Solid-State Sensors and Actuators, 1991. Digest of Technical Papers, TRANSDUCERS '91., 1991 International Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-87942-585-7
DOI :
10.1109/SENSOR.1991.148792
