The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2000
Filed:
Sep. 26, 1997
Toyohide Hayashi, Kyoto, JP;
Hiroaki Sugimoto, Kyoto, JP;
Masaya Asai, Kyoto, JP;
Noriaki Yokono, Kyoto, JP;
Abstract
An atmosphere concentration monitoring system includes multiple measurement ports for collecting atmospheric gas, a port selector for switching the multiple measurement ports, a concentration measurement unit for sampling the atmospheric gas through the selected measurement port and measuring the concentration of a specific substance contained in the sampled atmospheric gas. A different set of measurement conditions are established for each of the measurement ports. The port selector and the concentration measurement unit are controlled according to the different sets of measurement conditions. A life determination device includes a flow rate determination unit for measuring a flow rate of the atmospheric gas passing through the atmosphere processing unit. A throughput of the atmosphere processing unit is determined by integrating, with respect to time, a product of the flow rate and a difference between the upstream and downstream concentrations. The life of the atmosphere processing unit is determined as a function of the throughput.