Accession Number : AD0262301

Title :   AN ELECTRONIC DIFFERENTIAL PRESSURE INDICATOR FOR STATIC MEASUREMENT OF GASEOUS FLUID FLOW

Corporate Author : MISSISSIPPI STATE UNIV STATE COLLEGE

Personal Author(s) : COON,JESSIE H.

Report Date : 01 AUG 1961

Pagination or Media Count : 1

Abstract : IN CONSTRUCTING THE Electronic Differential Pressure Indicator, components which were commercially available were used as much as possible. It was necessary, however, to construct a number of the components such as the input transformer and the oscillator transformer. In addition, both the printed wiring board and the instrument panel overlay had to be designed and constructed. The device has been useful in measuring pressure differentials and velocities which are of low magnitude and has found additional use in determining directions of low velocity flows with the use of directional probes. The frequency response of the Electronic Differential Pressure Indicator is limited by the diaphragm and connecting tubes. It is sufficiently high to suggest the construction of an oscillator with a capacitance microphone in the tank circuit, for frequency measurements of air flow to investigate turbulence and flow separation. It is for this reason that provisions were made for an external input and an audio output in the construction of the Electronic Differential Pressure Indicator. (Author)

Descriptors :   *ELECTRONIC EQUIPMENT, *GAS FLOW, *PRESSURE GAGES, ARMOR PIERCING AMMUNITION, INSTRUMENTATION, MEASUREMENT, MEASURING INSTRUMENTS, OSCILLATORS, TEMPERATURE, TEST EQUIPMENT, TRANSFORMERS, TRANSISTORS, VELOCITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE