分析了汽包水位信号的摄取方式，采用模拟信号的方式，对水位信号进行充分鉴别，使水位保护准确可靠。
How to get the drum water-level signal is analyzed. The analogue signal is used in this design. The water-level signal is fully determined and it makes the water-level protection exact and reliable.
PLC输出信号直接控制电机转速，从而达到控制水位的目的。
PLC output signals directly control the motor speed, so as to achieve the purpose of controlling the water level.
当水位超过限制高度时，发出信号启动自吸泵排水。
When the level exceed limited height, the alarm send signals to start self-priming pump drain.
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。
The control circuit controls the water drainage mechanism using a relay and a contactor by the water level detection signal.
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；
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.
应用推荐