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
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE