Device for displaying change of barometric air pressure

Details Device for displaying change of barometric air pressure Device for displaying change of barometric air pressure

1998-06-02

1999-11-09

Oen, William

Measuring and testing

Instrument proving or calibrating

Fluid pressure

G01L 2700

Patent

active

059792175

ABSTRACT:
The invention is a device for representing changes in barometric pressure comprising an electronic barometric pressure sensor 2 and a digital differentiating circuit in which a differential quotient .DELTA.P/.DELTA.t is found which is connected to a display of the speed of the change in barometric pressure with mathematical sign and numerical figure. The electrical supply for said barometric pressure sensor 2 is obtained in cyclical intervals. The cyclically determined measured barometric pressure values are checked for plausibility, only the plausible measured barometric pressure values being used to find the differential quotient .DELTA.P/.DELTA.t.

REFERENCES:
Siemens, Schaltbeispiele, Ausgabe 1982/83 (direkte Nachfolge der letzten Ausgabe 1980/81) (No month).

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