Water Level Sensor | 220V 20A Pump Controller | DF-96D Switch

This automatic water level controller stops your tank from overflowing or running dry. The included level sensor probes track the water level. They tell your pump when to turn on and off. It's a practical 220V water level switch for managing your water supply automatically. Features and Benefits - 20A Current Rating - It controls most residential pumps up to 1.5kW directly, without needing a separate contactor. - Dry Run Protection - The liquid level detection sensor shuts the pump off if the source runs dry. This helps prevent motor burnout. - Dual-Mode Operation - You can wire it to fill an overhead tank or to empty a sump pit. This makes it useful for different jobs. - Simple Installation - The housing has a clear wiring diagram. It comes with three probes and 2-meter cables to help you install the water level controller. Applications - Maintaining the water level in a home's overhead tank. - Automatically draining a basement sump or collection pit. - Controlling the pump for a small-scale agricultural water storage system. Mechanical / Float Sensors The DF-96D DF-96DK Water Level Sensor is a float switch type, designed to control a 220V 20A pump. Mechanical water level sensors, like this product, typically work by using a buoyant float that moves with the water level. As the water level changes, the float rises or falls, activating or deactivating a magnetic switch or reed switch within the unit. This action then controls the connected pump, preventing overfilling or running dry. The 2m cable length provides flexibility for installation. Ultrasonic Sensors (Non-Contact) While the DF-96D DF-96DK is a float switch, other types of water level sensors include non-contact ultrasonic sensors. These sensors work by emitting sound waves and measuring the time it takes for the waves to reflect back from the water's surface. This allows them to determine the water level without any physical contact with the liquid. They are often used in applications where contamination or corrosive liquids are a concern. Unlike the DF-96D DF-96DK, they do not typically incorporate a float mechanism. Submersible Hydrostatic Pressure Sensors Submersible hydrostatic pressure sensors offer another method for determining water levels. These sensors are submerged directly into the liquid and measure the pressure exerted by the water column above them. As the water level rises, the pressure increases, and the sensor converts this pressure into an electrical signal. This signal can then be used to control pumps or trigger alarms. They are distinct from the float switch design of the 220V 20A DF-96D DF-96DK Water Level Sensor. Capacitive Sensors Capacitive sensors are non-contact level sensors that detect changes in capacitance caused by the presence or absence of a material. For water level sensing, they work by measuring the change in capacitance between two electrodes as the water level fluctuates. This method is often employed for detecting levels in non-conductive liquids or for precise level monitoring. The DF-96D DF-96DK Water Level Sensor, with its float switch mechanism, operates on a different principle. Optical Sensors Optical sensors for water level detection typically utilise light to determine the liquid's presence. They can work by emitting a light beam and detecting whether it is refracted or reflected by the water's surface. Some designs involve a light source and a detector, with the water interrupting the light path when it reaches a certain level. This differs from the mechanical float switch operation of the DF-96D DF-96DK, which relies on physical movement of a float.