Analog Flueric Gas Concentration Sensor.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1973
- Accession Number
- AD0774280
Entities
People
- Fernando Villarroel
- Robert L. Woods
Organizations
- Harry Diamond Laboratories