The water level sensor refers to an instrument that can convert the water level parameter of the measured point into the corresponding power signal in real time. Its working principle is: the water level sensor in the container transmits the sensed water level signal to the controller, and the computer in the controller compares the measured water level signal with the set signal to obtain the deviation, and then according to the nature of the deviation, the The water supply electric valve issues "open" and "close" commands to ensure that the container reaches the set water level. After the water inlet procedure is completed, the computer in the temperature control part issues an "open" command to the electric valve that supplies the heat medium, and the system begins to heat the water in the container. When the set temperature is reached. Only after the controller issues the command to close the valve and cut off the heat source, the system enters the heat preservation state. In the process of programming, to ensure that the system does not reach the safe water level, the electric control valve that controls the heat source does not open the valve, thereby avoiding heat loss and accidents.
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