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Author: Edmund B. Weis (Jr.)
Publisher:
ISBN:
Category : Anoxemia
Languages : en
Pages : 28
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Book Description
This is a report of an investigation undertaken to establish a method for monitoring oxygen supply of a man during stress experiments. An analysis of various systems for measuring oxygen partial pressure led to the selection of the polarographic principle. The polarographic system of analysis was examined in detail and modified polarographic cell with a bare cathode and fast response time was investigated. The bare cathode oxygen sensor has instabilities due to interface variations which will require extensive study to achieve accuracy. Polarographic analysis is useful for blood and atmospheric oxygen tension monitoring.
Author: Edmund B. Weis (Jr.)
Publisher:
ISBN:
Category : Anoxemia
Languages : en
Pages : 28
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Book Description
This is a report of an investigation undertaken to establish a method for monitoring oxygen supply of a man during stress experiments. An analysis of various systems for measuring oxygen partial pressure led to the selection of the polarographic principle. The polarographic system of analysis was examined in detail and modified polarographic cell with a bare cathode and fast response time was investigated. The bare cathode oxygen sensor has instabilities due to interface variations which will require extensive study to achieve accuracy. Polarographic analysis is useful for blood and atmospheric oxygen tension monitoring.
Author: J. J. Wortman
Publisher:
ISBN:
Category : Oxygen
Languages : en
Pages : 100
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Book Description
The development is described of a laboratory model oxygen partial pressure sensor using a sputtered zinc oxide thin film. The film is operated at about 400 C through the use of a miniature silicon bar. Because of the unique resistance versus temperature relation of the silicon bar, control of the operational temperature is achieved by controlling the resistance. A circuit for accomplishing this is described. The response of sputtered zinc oxide films of various thicknesses to oxygen, nitrogen, argon, carbon dioxide, and water vapor caused a change in the film resistance. Over a large range, film conductance varied approximately as the square root of the oxygen partial pressure. The presence of water vapor in the gas stream caused a shift in the film conductance at a given oxygen partial pressure. A theoretical model is presented to explain the characteristic features of the zinc oxide response to oxygen.
Author: Gerald Jankowitz
Publisher:
ISBN:
Category : Air sampling apparatus
Languages : en
Pages : 48
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Book Description
The objective of the program was to design and develop a compact airborne CO2 sensor unit capable of sensing and measuring the CO2 content of manned, sealed environments. A prototype carbon dioxide sensor was designed, built, and calibrated. The sensor operates by alternately comparing the infrared absorption of the air sample at 4.26 microns, where CO2 exhibits strong absorption and at 3.90 microns where it has little absorption. A two color rotating filter provides sampling 200 times per second. The unit weighs 10 pounds and has a power consumption of 70 watts. The instrument is capable of detecting a concentration of at least 0.30% CO2 and has full scale capability to 5%. (Author).
Author: Richard W. Alnutt
Publisher:
ISBN:
Category : Detectors
Languages : en
Pages : 82
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Book Description
This third, and final, volume is devoted to a discussion of monitoring systems. While the applications of physiological monitoring are many and varied, the primary concern here is with viability monitoring, the use of a measurement system to obtain factual, quantitative information about the physiological responses of a subject in a stressful environment, in order to plan protective measures which will ensure the safety and functional capability of that subject in such environments. Included are a description of instrumentation required for the measurement of individual physiological parameters, a discussion of related problems in system design, including simultaneous measurement of several parameters, data transmission or telemetry, and the use of magnetic tape recording as a system adjunct. Basic guidelines of system troubleshooting and interference reduction are also included. Section IV contains a brief survey of additional measurement techniques and data handling considerations which, while not state of the art or standard practice, will undoubtedly affect the field of physiological monitoring in the near future.
Author: United States. Dept. of Commerce. Office of Technical Services
Publisher:
ISBN:
Category :
Languages : en
Pages : 600
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Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 436
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Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 478
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Author: Herner and Company
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 398
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Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 794
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