Level Sensor | Submersible Transmitter Probe | 4-20mA Output, 5m Cable

This YB2JF liquid level transmitter is a submersible sensor. It's made for constant monitoring in tanks and reservoirs. It works by measuring water pressure and sends a standard 4-20mA signal. The probe is built to stay underwater for accurate, long-term water level detection. Features and Benefits - Hydrostatic Pressure Measurement - You put the sensor at the bottom of a tank. It figures out the liquid depth based on the weight of the water above it. - Industrial 4-20mA Output - It sends a steady current signal. This signal resists electrical noise over long cable runs, good for connecting to PLCs and controllers. - 304 Stainless Steel Probe - The housing is made of 304 stainless steel. This gives it good resistance to corrosion in water, wastewater, and other mild liquids. - IP68 Waterproof Construction - The whole sensor, including the cable and probe, is fully sealed. This prevents leaks and allows it to stay submerged permanently. Applications - Water Tank Management - Place it in a water tank or well. It gives real-time level data to control pumps or trigger low-level alerts. - Sump Pit Monitoring - This is good for tracking water levels in basement sump pits or industrial collection basins. It helps manage automatic drainage. - Environmental Tracking - Use it in ponds, rivers, or reservoirs. It collects data on water levels for environmental studies or resource management. Mechanical / Float Sensors Mechanical or float sensors are a common type of water level sensor. They typically use a magnetic switch or a reed switch within a sealed stem. As the liquid level rises, a float with a magnet inside moves up, activating the switch to indicate the level. These level sensors are straightforward in operation. While this specific product is a submersible transmitter probe, understanding how a water level sensor works often begins with these simpler mechanical principles. They are widely used for basic high or low level alarms and pump control. Ultrasonic Sensors (Non-Contact) Ultrasonic sensors are non-contact level sensors that work by emitting high-frequency sound waves. These waves bounce off the surface of the liquid and return to the sensor. The time it takes for the sound to travel and return is used to calculate the distance to the liquid, thereby determining the water level. This type of level sensor is ideal for applications where the sensor cannot come into contact with the liquid, such as in corrosive environments. They offer continuous level measurement without direct immersion. Submersible Hydrostatic Pressure Sensors The Level Sensor | Submersible Transmitter Probe | 4-20mA Output, 5m Cable is a type of submersible hydrostatic pressure sensor. How do water level sensors of this kind work? They operate by measuring the pressure exerted by the column of liquid above the sensor. As the liquid level increases, the pressure at the sensor's diaphragm also increases. This product features a 4-20 mA output signal, providing a continuous measurement of the level. It requires a 12-32 VDC power supply and comes with a 5 m cable, indicating it is designed for immersion. Capacitive Sensors Capacitive sensors detect changes in capacitance caused by the presence or absence of a liquid. These level sensors can be used for both continuous and point level detection. When a probe or the sensor comes into contact with the liquid, the capacitance between the probe and the container wall (or a second probe) changes. This change is then converted into an output signal. They are effective for various liquids and can be used in tanks and pipes. Optical Sensors Optical sensors for liquid level detection work by using light. They typically employ an LED and a phototransistor. When the sensor tip is immersed in liquid, the light from the LED is refracted away from the phototransistor, causing a change in its output. When the tip is in air, the light is reflected back to the phototransistor. This allows them to detect the presence or absence of liquid at a specific point. They are often used for high or low level alarms and are known for their reliability in clear liquids.