Bubble vial with external aluminum-foil electrodes is sensing element for simple indicating tiltmeter. To measure bubble displacement, bridge circuit detects difference in capacitance between two sensing electrodes and reference electrode. Tiltmeter was developed for experiment on forecasting seismic events by changes in Earth's magnetic field.
A Simple Tiltmeter
NASA Tech Briefs ; 6 , 3
01.12.1982
Sonstige
Keine Angabe
Englisch
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