Electrically scanned pressure sensor module with in situ calibra

Details Electrically scanned pressure sensor module with in situ calibra Electrically scanned pressure sensor module with in situ calibra

1977-09-22

1978-09-05

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Combined

73 4R, 73147, 73721, 73756, G01L 700, G01L 906

Patent

active

041110587

ABSTRACT:
This invention is a high data rate pressure sensor module with an in situ calibration capability to help reduce energy consumption in wind tunnel facilities without loss of measurement accuracy. The sensor module allows for nearly a two order of magnitude increase in data rates over conventional electromechanically scanned pressure sampling techniques. The module consists of 16 solid state pressure sensor chips and signal multiplexing electronics integrally mounted to a four position pressure selector switch. One of the four positions of the pressure selector switch allows the in situ calibration of the 16 pressure sensors; the three other positions allow 48 channels (three sets of 16) pressure inputs to be measured by the sensors. The small size of the sensor module will allow mounting within many wind tunnel models, thus eliminating long tube lengths and their corresponding slow pressure response.

REFERENCES:
patent: 3689748 (1972-09-01), Bothne

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