Method and apparatus for heat radiating type level sensor measur

Details Method and apparatus for heat radiating type level sensor measur Method and apparatus for heat radiating type level sensor measur

1992-05-01

1993-07-20

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Thermal type

364509, G01F 2324

Patent

active

052283402

ABSTRACT:
A heat radiating type level sensor measurement of liquid level capable of preventing the errors in a case of sudden environmental temperature change, and accounting for the agitated motion of the liquid surface. The measured liquid level can be obtained as the steady state output voltage plus a difference between the initial output voltage for a present measurement and the initial output voltage for an immediately preceding measurement, with the difference multiplied by a predetermined constant. The measured liquid level for a present measurement can also be obtained as an arithmetic average of the steady state output voltage and a predetermined number of previous steady state output voltages within a prescribed range obtained by previous measurements, in a case the steady state output voltage derived at the deriving step is within the prescribed range, and as the measured liquid level obtained for an immediately preceding measurement, in a case the steady state output voltage derived at the deriving step is outside of the prescribed range.

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