Multichannel gas analyzer and method of use
US4907166A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Sep 25, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/121
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved gas analyzer system (FIG. 1) and method of use for detecting and displaying the partial pressures of certain constituent gases in a respiratory gas stream, the system comprising an optical bench (111) through which a respiratory gas flows and in which measurements of the gas are taken; analog input circuits (122) for receiving signals output from the optical bench (111) through which a respiratory gas flows and in which measurements of the gas are taken; analog processing circuits (124) for processing signals output from the analog input circuits (122); display processing circuits (128) for processing the signals output from the analog processing circuits (124) and other system circuitry; pixel logic circuits/analog outputs (130) for processing signals output from the display processing circuitry (128) and providing analog output ports; a five button panel (148), an alarm/knob board (144), and a speaker driver (152) for operator interface and activation of audible and visual alarms; a CRT driver for driving a CRT; and a power supply (158) for powering the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.