A fundamental study on the measurement method for the weak electrolyte liquid surface level with square pole Si electrode

摘要

In the paper, we discuss the technique that the small width about 10mm of the weak electrolyte surface level is measured with square pole electrode. And the electrical characteristics at a relative position between the liquid surface level and the electrode in weak electrolyte were analyzed from the resistance model. It was obtained from the simulation result that the pole electrode with a higher resistivity is useful. The liquid level meter was fabricated with several square pole Si electrodes with different resistivity. We have confirmed that the liquid surface level is able to measure with a accuracy of ±8%.