Accession Number : AD0774280
Title : Analog Flueric Gas Concentration Sensor.
Descriptive Note : Technical memo.,
Corporate Author : HARRY DIAMOND LABS WASHINGTON D C
Personal Author(s) : Villarroel,Fernando ; Woods,Robert L.
Report Date : JUN 1973
Pagination or Media Count : 36
Abstract : Fluid amplifiers, Flueric devices, Gas flow, Numerical analysisProportional amplifiersThe report describes a passive flueric gas concentrator sensor that can be used to determine the concentration of a gas relative to a reference gas mixture. The sensor is composed of linear (viscosity dependent) and nonlinear (density dependent) fluid resistors connected in a bridge circuit. The bridge output is a differential pressure signal proportional to the unknown concentration. In the system discussed in this report, the low output signal of the sensor is amplified by a high-gain laminar proportional amplifier. The sensor is capable of sensing from extremely low concentrations to full gas concentrations with good linearity and low noise. (Author)
Descriptors : *GAS DETECTORS, *FLUIDICS, FLUID AMPLIFIERS, FLUERIC DEVICES, GAS FLOW, NUMERICAL ANALYSIS
Subject Categories : Physical Chemistry
Fluidics and Fluerics
Distribution Statement : APPROVED FOR PUBLIC RELEASE