Title :
Measuring small air pressure gradients by a flow sensor
Author_Institution :
Univ. of California, San Diego, La Jolla, CA, USA
Abstract :
In this article, I discuss very small air pressure gradients: on the order of a millimeter of water (9.806 Pa, or 0.001422 psi). Conventional pressure sensors, as a rule, are not quite suitable for this purpose because their input signal spans are several orders of magnitude larger than the pressure gradients we try to measure. Thus, high gain amplification would be required with all its negative baggage, including a high level of noise.
Keywords :
flow measurement; flow sensors; pressure measurement; pressure sensors; flow sensor; negative baggage; noise level; pressure 0.001422 psi; pressure 9.806 Pa; pressure sensor; small air gradient measurement; Air cleaners; Air pressure measurement; Electron tubes; Monitoring; Pressure measurement; Temperature measurement; Temperature sensors; Tutorials;
Journal_Title :
Instrumentation & Measurement Magazine, IEEE
DOI :
10.1109/MIM.2012.6314513
