The water level sensor means able to test point level parameter into the corresponding amount in real time the instrument signals. Its working principle is: water level sensor in the container, the transfer felt level signal to the controller, the controller in the computer the measured signal level is compared with the setting signal, the deviation obtained, and according to the nature of the deviation, the electric valve feedwater emitted quot; open quot; and quot; oFF quot; command, to ensure that the container reaches the set level. After the process is complete the water, the temperature control part of the computer sends the heat medium is supplied to the electric valve quot; open quot; instruction, then the system starts heating the water in the container. To the set temperature. Before the controller issues a command to close the valve, off the heat source, the system enters the insulating state. Programming process, ensure that the system has not been reached safety level, the electric control valve controls the heat source is not opened, thereby avoiding the occurrence of heat loss accident.
1. Introduction water level sensor
sensor is capable of feeling water temperature and the water temperature shift feel the instrument into electrical signals change. In the history of the development of solar water heaters,Water temperature sensor has been playing a pivotal role in intelligent, user-friendly water heaters are inextricably linked with the water temperature sensor, temperature and water level measurement and control instrument is inseparable from the water temperature sensor, water temperature sensor is stable for the entire water heater intelligent control protection. Water temperature sensor from scratch, from simple to complex, from short to long service life, and efforts have solar professionals are inseparable.
2. Application of the water level sensor
is widely used in water plants, refineries, chemical plants, glass, sewage treatment plants, water towers system, reservoirs, rivers, sea, etc. to the water supply tank, with a pool, water tank, water wells, water tanks, water tanks, wells, tanks, oil tanks and various liquids static and dynamic liquid level measurement and control.
illustrate the application of input water level sensor in the water level monitoring system: water level monitoring system topology level sensor inputs DATA-51 series
The water level sensor 3 Principle
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The water level sensor in the container, the water level sense signal to the controller, the controller in the computer the measured signal level is compared with the setting signal, obtained deviation, and the nature of the deviation, to the electric feed water valve should quot; open quot; and quot; oFF quot; command, to ensure that the container reaches the set level. After the process is complete the water, the temperature control part of the computer sends the heat medium is supplied to the electric valve quot; open quot; instruction, then the system starts heating the water in the container. To the set temperature. Before the controller issues a command to close the valve, off the heat source, the system enters the insulating state. Programming process, ensure that the system has not been reached safety level, the electric control valve controls the heat source is not opened, thereby avoiding the occurrence of heat loss accident.