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THE OBJECTIVE OF THIS PROJECT IS TO BUILD AND EVALUATE A PRECISION, MICROPROCESSOR-CONTROLLED GAS MIXER.

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 3258
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1985
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
234 N.w. 55th
Seattle, WA 98107
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 THOMAS R. CLARY
 PRINCIPAL INVESTIGATOR
 (206) 786-6919
Business Contact
Phone: () -
Research Institution
N/A
Abstract

THE OBJECTIVE OF THIS PROJECT IS TO BUILD AND EVALUATE A PRECISION, MICROPROCESSOR-CONTROLLED GAS MIXER. THE MIXER WILL PROVIDE GAS AT A CONSTANT FLOW RATE WITH A CONTROLLED CONCENTRATION OF UP TO FOUR COMPONENT GASES. THE MIXER DESIGN IS BASED ON THE RELATIONSHIP OF MASS FLOW TO DIFFERENTIAL PRESSURE ACROSS AN ORIFICE WITH FIXED AREA AND DISCHARGE COEFFICIENT. FOR EACH GAS CHANNEL (TOTAL OF FOUR CHANNELS) GAS FLOW IS MONITORED BY MEASURING THE DIFFERENTIAL PRESSURE ACROSS A CALIBRATED ORIFICE. THE ACTUAL FLOW IS FED BACK TO THE MICROPROCESSOR AND COMPARED TO THE DESIRED OUTPUT CONCENTRATIONS INPUT BY THE OPERATOR. CORRECTIONS IN GAS FLOW ARE OBTAINED BY REPOSITIONING THE STEPPER MOTOR-DRIVEN FLOW CONTROL VALVE. CORRECTION FACTORS ARE STORED IN THE MICROPROCESSOR TO ALLOW ACCURATE CONTROL OF A WIDE VARIETY OF GASES. PHASE I WILL ADDRESS DESIGN FEASIBILITY AND INVESTIGATE APPLICATION TO VARIOUS MEDICAL AND ANESTHESIOLOGICAL PROBLEMS.

* Information listed above is at the time of submission. *

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