The purpose of water level controller

Water level controllers are widely used in industrial boilers, water tanks for civil buildings, water towers, water tanks, and open or closed storage tanks and underground tanks in petrochemical, paper-making, food and sewage treatment industries. The detected media can be water, oil, acid, alkali, industrial sewage and other conductive and non-conductive liquids. It forms a set of advanced liquid level display and control equipment with electric valve, which automatically opens and closes the electric valve.

in the drainage control system, the main engine is installed in the pump room. During operation, the main engine detects the water depth signal in real time, and controls the pump to start the pump at the upper limit and stop the pump at the lower limit. If the water level exceeds the upper limit, or falls below the lower limit, or the water pump fails, the host will notify the administrator by SMS, and the administrator can check it on the spot, or compile SMS instructions to start and stop the water pump forcibly.

the remote monitoring system of drainage pump station is suitable for remote monitoring and management of urban drainage pump station. Pumping station managers can remotely monitor the working status of grid machines in the station, the water level of sewage pool, the working status of lifting pump groups, the outbound flow, the concentration of harmful gases in the pool, etc. in the monitoring center of the pumping station management office; Support manual control, automatic control and remote control of grid machine, exhaust fan and lift pump; Image monitoring station panorama and important stations. The water level switch is controlled by the water level controller, with animation demonstration. The principle of electronic water level switch is to detect the water level through an electronic probe, and then the detected signal is processed by a special chip for water level detection. When the liquid to be detected reaches the action point, the chip outputs a high or low level signal, and then cooperates with the water level controller to realize the control of the liquid level. There is no need for floating ball and reed switch, there is no mechanical action outside, it is pollution-resistant and durable, and it is not afraid of the influence of floating objects. It can be installed at any angle, and the vertical installation has certain wave-proof function, which is suitable for being immersed in water for a long time. The working voltage is 5-24V DC, which is very safe. Tangshan Pingsheng is the first choice for water level monitoring. Example: put one water level switch at the high water level A position and the other at the low water level B position. When the water reaches the B position, the relay is closed, and at this time, the water pump or solenoid valve can be controlled to start and start to feed water; When the water rises to the position of high water level A, the relay is disconnected, and the water pump or solenoid valve is powered off. Then the water reaches the low water level B and circulates repeatedly ...

This way is practical, pollution-resistant, long-lived and safe. Basically, there are two ways: one is the float switch with a large metal ball, which is buoyant when immersed in water, and can control two water levels. For example, when the water is full, the float rises due to buoyancy, which drives the ball valve to move, so that the valve is closed and the water is stopped. When the water is less, the float drops, the valve is opened, and the water is fed again, and so on. This method is mostly used in boiling water boilers and toilets. There is also a miniature float switch with reed switch. The reed switch inside the rod is closed by a small magnetic float outside, so as to control the water level. Most of them are used to control the water level of clean water. Generally, they are traded for more than ten yuan, but they are easily affected by dirt and are not suitable for sewage. The second type is the cable-type float switch, which is connected with the water pump through an elastic wire, and can be used for automatic control of water level in water towers and pools and water shortage protection. The allowable electrical appliances are about 22 V and 1 A, and the length of the wire between the counter weight or a fixed point of the elastic wire determines the water level. This kind of water level switch is cheap, suitable for some occasions with less strict requirements, and has certain pollution resistance. However, there is such a problem: the stability of floating balls is easily affected by external impurities, especially the fibrous impurities are entangled and there are mistakes. It is not appropriate to use multiple floating balls in the same small water tank, otherwise they will be entangled. The service life is relatively short, and most of them are directly connected to 22V, which has certain security risks. One day, electricity will leak because of broken wires. Therefore, the cable-type float switch generally has such a warning: the power cord is an integral part of this device. Once the wire is found to be damaged, this device should be replaced, and it is not allowed to repair the wire.