The electronic level controller micro-relay suits many applications, given its size and features like precision and usability. Here, you’ll learn how it works and its benefits. We will also discuss using it in your liquid-level detection and control system.
What is an Electronic Level Controller Micro Relay?
The electronic level controller micro-relay is a small device for monitoring and controlling liquid. It automates circuit opening and closing. The circuits may operate motorized pumps, electrically actuated valves, or trigger alarms.
The device derives its name from the compact size it comes in. Unlike standard types, it’s small-sized and suitable for specialized uses, such as confined places and low-power systems.
You can use the relay in various settings, from domestic and commercial to industrial. The liquids you can control also vary widely. They can be water, beverages, or industrial chemicals.
Level Controller Relay Functions
The relay reacts to sensor signals to close and open electrical circuits. This function serves various purposes, depending on the desired control action. The following are tasks that the product can help accomplish.
Filling and Draining
The most significant function is filling and draining liquids. It operates pump-up and pump-down systems, maintaining specified levels (high or low). An example is emptying a lower tank and elevating the water to an upper tank.
Overflow Prevention
The relay can help prevent overflow. It reacts to a maximum liquid level and activates a “STOP” function. That way, it prevents buildings from flooding and tanks from overflowing and wasting water or another liquid.
Pump Protection
Submerged pumps get damaged if they run dry. Using a level control micro-relay can prevent that by maintaining some water in the pump. That, in turn, ensures the pump operates efficiently and lasts longer.
How a Level Controller Micro Relay Works
The relay works with sensors to complete or break electrical circuits and start or stop processes. The sensors are either conductive or floater types. Conductive sensors immerse in the liquid, measuring resistance changes to detect liquid levels.
On the other hand, floating sensors operate in non-conductive liquids. These can be oils, de-ionized water, paraffin, and paints. Let’s see how a level-control relay for conductive liquid works:
- The water level reaches a specified point, making contact with a sensor/probe
- The contact changes the electrical resistance between two probes
- The resulting signal goes to a controller or directly to the level relay
- The relay responds, completing a higher energy device like a contactor
- The completed circuit switches on/off a device like a pump or valve
- The activation may also trigger a warning device, such as an alarm or light
Level relays usually have adjustable sensitivities, allowing users to tune them to match application needs. It’s also common for manufacturers to include time-delay functions. It prevents accidental triggers.
Level Controller Micro Relay Benefits
Level control relays offer various benefits when used in a liquid control circuit or system. They include saving space, enhancing efficiency, and increasing precision. It also suits low-voltage or low-power circuits.
Space Savings
Their compact design saves space, allowing you to install them in confined spaces. The small size also makes the relays easier to use and less demanding to power. In other words, you can utilize them in low to moderate-energy systems.
Increased Precision
They quickly react to sensor signals. The higher sensitivity increases precision, making your liquid detection system more reliable and accurate. It helps avoid operation errors and safety concerns, especially in leak and flooding control.
Improved Efficiency
They consume less power than regular relays, making them more energy-efficient. That lowers the cost of operating your low-power system. It also makes your control system less tasking by automating level detection and circuit activation.
Low Voltage Use
The product is compatible with low-power circuits and electronic systems. It requires low-voltage inputs, making it suitable for liquid regulation circuits using resistance sensors. The low-voltage use also allows remote sensing, both wired and wireless.
Electronic Level Controller Micro Relay Applications
The liquid level control relay plays a crucial role in liquid-management systems by ensuring levels do not increase or reduce beyond safe and set limits. The following are application examples in various industries and settings.
Domestic Applications: the device regulates water levels in tanks and cisterns in homes and other residential places, such as apartment buildings. For instance, it may operate a filling pump or detect leaks by sensing water buildup in a room.
Commercial Places: businesses can use the device to control water and other liquids in tanks. This application includes detecting flooding in offices and business premises and enhancing safety.
Industrial Settings: the relay is helpful in manufacturing or processing facilities. It operates pumps, valves, and various other devices. It completes industrial tasks like sensing water, raw material, and finished product levels.
Level Controller Micro Relay Selection Criteria
The level relay is available in various configurations and other differences. Users, must, therefore, select the type to use based on these factors: type of liquid, switching speed, and electrical specifications.
Liquid Type
Different liquid types have varying resistance values. Likewise, manufacturers build level relays to respond to specific resistance limits. Ensure the relay can work with the liquid type you intend to control.
The liquid can be water (purified, wastewater, sewer water, rainwater, spring water, etc.) or a beverage (milk, water, coffee, fruit juices, wine, beer, mineral water). It also includes chemicals (acids, alkaline solutions, and neutral liquids)
Switching Speed
Switching speed determines responsiveness and accuracy. The switching speed you need depends on your application’s requirements. Some require instant action, while some can withstand a slight delay.
Choose the device according to your system’s specifications. For instance, liquids that experience turbulence or foaming require different relays and sensor circuits from calmer types.
Electrical Specifications
Most level relays support AC and DC power sources. They mainly differ in voltage and current specifications. Buyers sizing the device must match these with the application ratings and requirements.
The specifications include operating and load voltages. These are crucial for relay integration into existing systems. The systems incorporate motors, contactors, circuit breakers, and sometimes microcontrollers for intelligent operation.
Conclusion
Electronic level controller relays help manage liquids in various applications. They may fill, drain, or prevent containers from flowing over. You can also use the product to protect submerged pumps or detect accidental flooding. The model you choose should match your application’s electrical specifications and other needs.
