Method and an apparatus for monitoring the subjection of individ

Details Method and an apparatus for monitoring the subjection of individ Method and an apparatus for monitoring the subjection of individ

1980-05-29

1983-05-17

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

73 23, 204 1T, 204406, 340573, G08B 1710

Patent

active

043842836

ABSTRACT:
A method for monitoring the exposure of an individual person to toxic gases is carried out such that the gas concentration is continuously measured with a sensor for the specific gas, recorded and the measured values then read and evaluated. Instantaneous values of the concentration are periodically scanned, temporal mean values of the instanteous values are formed over a predetermined time interval, these mean values are stored and an alarm triggered if the instantaneous value and/or the mean value exceeds a predetermined critical value over the time interval or an integral multiple thereof.

REFERENCES:
patent: 3068450 (1962-12-01), Fletcher et al.
patent: 3878496 (1975-04-01), Erickson
patent: 4231249 (1980-11-01), Zuckerman

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