Respiratory gas analysis instrument having improved volume calib

Details Respiratory gas analysis instrument having improved volume calib Respiratory gas analysis instrument having improved volume calib

1982-07-02

1984-05-15

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

73 1G, 128719, 364571, G01N 3100

Patent

active

044480580

ABSTRACT:
An improved gas volume calibration method and apparatus for use in respiratory gas analyzers. A control unit monitors the flow of calibration gas through the analyzer by monitoring the electrical signals produced by a gas turbine and a breath switch. During calibration, a known volume of calibration gas is repeatedly delivered to the analyzer from a calibration syringe at each of a number of different flow rates. On the basis of the information received from the turbine and the breath switch, the control unit generates and stores a piecewise linear approximation of the nonlinear characteristic of the turbine. This stored turbine characteristic is then made available during subsequent measurements to eliminate those volume errors which are associated with variations in the rate at which the sample gas is delivered, thereby affording measurements of improved accuracy.

REFERENCES:
patent: 3948604 (1976-04-01), Hoppesch
patent: 4178919 (1979-12-01), Hall
patent: 4316380 (1982-02-01), Heim et al.

Affiliated with

Also associated with

Rating

Respiratory gas analysis instrument having improved volume calib does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Respiratory gas analysis instrument having improved volume calib, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Respiratory gas analysis instrument having improved volume calib will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-838246