37 results about "Oxygen Content Measurement" patented technology

A method of diagnosing cerebrovascular autoregulation in a patient includes measuring blood pressure of the patient, measuring, non-invasively, venous oxygen content of the patient's brain substantially simultaneously with the measuring blood pressure, correlating the blood pressure and the venous oxygen content measurements in a time domain, and determining a cerebrovascular autoregulation state of the patient based on the correlating the blood pressure and the venous oxygen content measurements.

The invention provides a smoke oxygen content measurement method and system. The system comprises a main flue, an air preheater, a dust collector, a bypass flue and an oxygen content measurement device, wherein the air preheater is arranged in the main flue; the dust collector is used for collecting smoke to be tested from the main flue at the front end of the air preheater and carrying out dust removal treatment on the smoke to be tested; the bypass flue is used for sending the smoke to be tested, subjected to the dust removal treatment by the dust collector, to the main flue at the rear endof the air preheater; and the oxygen content measurement device is used for detecting the oxygen content of the smoke to be tested in the bypass flue and outputting detected oxygen content data. Based on the technical scheme of the invention, a zirconium oxide probe can be prevented from being contaminated by dust, and the smoke oxygen content can be accurately measured.

The invention relates to a method for determining the oxygen content of a device for steam-methane reforming for hydrogen production. The method is as below: collecting the flow of natural gas and analytical gas in the device for steam-methane reforming for hydrogen production; calculating the amount of air needed for combustion by using the flow of natural gas and analytical gas; calculating the oxygen content by using the amount of air needed for combustion; and comparing the calculated oxygen content and the data detected by an oxygen content measuring instrument, so as to finish the determination of the oxygen content of the device for steam-methane reforming for hydrogen production. Compared with the prior art, the method provided by the invention gives comprehensive consideration of the influence factors and accurately calculates, can accurately obtain the accuracy of the oxygen content measuring instrument, increases fuel utilization rate and can be used in the calculation of the existing conversion furnace. Once the air quantity changes in the operation, the reason of fault can be determined rapidly.

The invention discloses an oxygenating device for a station boiler and water supply and an oxygenating method thereof. The oxygenating device comprises an oxygen content measurement module, an oxygen supply and an oxygen flow regulation module, wherein, the oxygen content measurement module is used for measuring the dissolved oxygen content of condensed water at an entrance of a pump package of acondensed water pump for a station boiler; the oxygen supply is used for supplying oxygen required by oxygen supplementation; and the oxygen flow regulation module is connected with the oxygen supply, can be inserted into the entrance of the pump package of a condensed water pump, and is used for controlling the flow oxygenating to condensed water according to the dissolved oxygen content output by the oxygen content measurement module. The method and the device are used in the mode of water supply weak oxidizing treatment (or AVT(O)) of a high parameter machine set of a station so as to supply, regulate and control the dissolved oxygen of the condensed water and economizer supply water, which is in accordance with the requirements of weak oxidizing treatment. By the regulation and the design of oxygenating points and flow, the invention simplifies a system, increases the safe reliability of the system, stabilizes the oxygenation differential pressure and simplifies control.