Process and device for indicating and evaluating...

Details Process and device for indicating and evaluating... Process and device for indicating and evaluating...

G - Physics

01

N

354/21, 73/76

G01N 31/00 (2006.01)

Patent

CA 1213982

ABSTRACT OF THE DISCLOSURE 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 to- gether with information giving time and location of each measure- ment. 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 sub- jected 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.

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