Accession Number : ADA190676

Title :   A Chemical Agent Calibrator Using Fluidic Oscillator Flowmeters.

Descriptive Note : Final rept. Oct 82-Sep 84,

Corporate Author : HARRY DIAMOND LABS ADELPHI MD

Personal Author(s) : Grills, John P ; Ross, Chester W

PDF Url : ADA190676

Report Date : Feb 1988

Pagination or Media Count : 45

Abstract : This paper describes the development and operation of a unique laboratory calibration instrument employing fluidic oscillators as flow-measuring devices. The fluidic oscillator is composed of a laminar proportional amplifier in a negative feedback configuration. This arrangement allows great flexibility in design because of the availability of 'off the shelf' C-format laminates. It has been shown that staging such devices can increase linear ranges of operation (or turndown). The design goals of this instrument were to provide a highly accurate, noncontaminating, gas calibration standard to be used to calibrate gas chromatographs in the laboratory. Such a device was previously not available to the chemist and has thus advanced the state of the art for permeation devices.

Descriptors :   *CHEMICAL AGENTS, *FLOWMETERS, *FLUIDICS, *OSCILLATORS, AMPLIFIERS, CALIBRATION, CHROMATOGRAPHS, FEEDBACK, GASES, LABORATORY EQUIPMENT, LAMINAR FLOW, PERMEABILITY

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE