发明授权
US06634229B1 Resistive fluid level sensing and control system 失效
电阻式液位感应和控制系统

Resistive fluid level sensing and control system
摘要:
A fluid level sensing systems including a resistive element having an upper end portion disposed in an upper portion of a container and a lower end portion disposed in a lower portion of the container. The resistance of the resistive element varies between the upper and the lower portions of the container. An at least partially conductive strip having substantially the same length as the resistive element is disposed in the container generally parallel thereto and at approximately the same level in the container as the resistive element. An input signal source is coupled to the resistive element by a series resistor.
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