The control circuit controls the water drainage mechanism using a relay and a contactor by the water level detection signal.
控制电路通过水位检测信号，利用继电器和接触器控制排水机构。
Based on image, this technique enrich the knowledge of image processing, and give an novel method of detection water level.
该技术基于图像处理的方法，丰富了图像处理内容同时为水位自动检测提供了新的思路。
At first, boiler water level control system and the mean of alarm and fault detection adopted universally are introduced.
首先介绍了火电厂热工锅炉汽包水位控制系统以及现阶段普遍采取的报警和故障检测方法。
Therefore, the detection of oil-water interface is the important link to realize the auto-control of water level in oil tank.
因此，油水界面检测是实现储油罐水位自动控制的重要环节。
The invention discloses a water-level detection sensor for a solar water heater, which comprises floats, a sensor seat, a signal board and a protection hood.
本发明公开了一种太阳热水器水位探测传感器，它是由浮子、传感器座、信号板及防护罩构成；
The invention discloses a water-level detection sensor for a solar water heater, which comprises floats, a sensor seat, a signal board and a protection hood.
本发明公开了一种太阳热水器水位探测传感器，它是由浮子、传感器座、信号板及防护罩构成；
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