Process and device for indicating and evaluating environmental p

Details Process and device for indicating and evaluating environmental p Process and device for indicating and evaluating environmental p

1983-05-11

1985-07-02

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

340632, 346 14MR, G01N 3100

Patent

active

045260281

ABSTRACT:
A multiplicity of environmental parameters, such as composition of the ambient atmosphere, temperature and air pressure, are concurrently measured with a portable device and registered together with information giving time and location of each measurement. The readings are interrelated parameters, e.g. temperature and relative humidity, may be jointly evaluated with adjustment of the stored values in light of one another; they may also be subjected to other corrections such as linearization, averaging or logarithmic conversion. A keyboard on the device enables the instantaneous readout of a selected parameter on a common display panel; detection of dangerous concentrations of noxious gases, e.g. firedamp in a coal mine, sets off an alarm.

REFERENCES:
patent: 3415108 (1968-12-01), Hubner
patent: 4133034 (1979-01-01), Etter
patent: 4368519 (1983-01-01), Kennedy
patent: 4415853 (1983-11-01), Fisher
patent: 4419211 (1983-12-01), Brauer
patent: 4443791 (1984-04-01), Risgin et al.

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