The digital control of anaesthetic gas flow

Autor: P. Hutton, R. W. Boaden
Rok vydání: 1986
Předmět:
Zdroj: Anaesthesia. 41:413-418
ISSN: 1365-2044
0003-2409
DOI: 10.1111/j.1365-2044.1986.tb13230.x
Popis: Summary The theory and construction of a prototype digital gas flow controller are described. Using eight preset needle valves, it has the ability to deliver any flow from 50 to 12750 ml/minute in steps of 50 ml/minute. Under given conditions, the accuracy of this de vice is very high and its variation in performance with pipeline supply pressures is quantified. The required flow is requested from a BBC ‘B’ microcomputer which is interfaced with the equipment via a program written in Basic and the 1MHz bus port. The possible uses and potential of a microcomputer-controlled flow regulator in anaesthesia and intensive care are discussed.
Databáze: OpenAIRE