4 results about "Gas analysis" patented technology

A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interface to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.

As previous processing of measurement in which gas to be measured containing, as gas components, carbon dioxide ¹³CO₂ and carbon dioxide ¹²CO₂, is introduced into a cell, and in which the intensities of transmitted lights having wavelengths suitable for measurement of the respective gas components, are measured and then data-processed to measure the concentrations of the gas components, the air having a predetermined volume Va is sucked by a gas injection device 21, a gas exhaust valve V6 of a cell 11 is closed and the air stored in the gas injection device 21 is transferred to the cell 11 filled with the air at an atmospheric pressure, thereby to pressurize the cell inside. The pressure thus pressurized is measured as P. The cell volume Vc is subtracted from the product obtained by multiplying the sum. V0 of the volume Va and Vc the cell volume Vc, by the ratio P0/P in which P0 is the target pressure of the gas to be measured at which a calibration curve has been prepared for an isotope gas analysis and measurement, thus determining the one-time gas injection amount of the gas injection device 21. Thus, measured concentration variations based on changes in atmospheric pressure can be corrected.

The invention discloses a structural material ultra-high temperature corrosion experiment system and method under a serious accident of a nuclear reactor. The system comprises a gas supply system, a vacuum system, an experiment section, a cooling system and a tail gas analysis system; the gas supply system can be used for preparing corrosive gases with different water vapor contents; the experiment section is composed of a high-temperature radiation furnace, a low-temperature radiation furnace, a ceramic reaction tube, a heating wire, an air-cooled copper tube and heat preservation cotton, andtwo quartz glass windows are formed in the side wall of the high-temperature radiation furnace and used for containing a high-speed camera and an infrared temperature measurement probe respectively;the cooling system can provide necessary cooling for key equipment; the tail gas analysis system can measure the concentration of each component of the corrosion reaction tail gas on line, so that high-precision continuous measurement of reaction kinetics is realized; the experiment system further comprises a power distribution system, a numerical control system and a data measurement and acquisition system. The invention further provides an experimental method. By using the method and system, key data are provided for nuclear reactor safety design by carrying out a structural material ultra-high temperature corrosion experiment in a severe accident environment of the nuclear reactor.