Easy to Install Tank Level Alarms
A tank level alarm is a device that monitors the liquid level in a tank and alerts operators or other workers when it reaches a preset level. The particular operation of a tank level alarm depends on the type of alarm and the liquid being monitored, but in general, they work by employing one or more sensors to detect the level of liquid in the tank and then sending a signal to an alarm or control system when the level reaches a predefined point.
The following are some of the most popular types of sensors and technology used in tank level alarms, as well as an explanation of how they work:
Submersible Level sensors with a local display and relay outputs are an ideal choice for monitoring your chemicals and delivering a high level warning to prevent overspill.
Float sensors are devices that use a buoyant object that floats on top of the liquid and is linked to a sensor that transmits a signal when the float reaches a particular position. Mechanical or electronic sensors can be used. As the liquid level in the tank rises, so will the float. The sensor delivers a signal to the alarm or control system when the float reaches the predetermined point.
Ultrasonic sensors: An ultrasonic sensor measures the distance between the sensor and the liquid’s surface using sound waves. The sensor emits a sound wave and detects how long it takes for the wave to return. The sensor then computes the liquid level based on the distance to the surface.
Conductivity sensors: A conductivity sensor measures the level of a liquid by using electrical conductivity. To detect the liquid level, the sensor conducts an electrical current through the liquid and measures the resistance. This approach is reasonably precise and applicable to a wide range of liquids.
Radar sensors: A radar sensor measures the distance between the sensor and the liquid’s surface using radar waves. Based on this distance, the sensor determines the liquid level. This approach is reasonably precise and applicable to a wide range of liquids.
The alarm or control system will take necessary action if the sensor delivers a signal indicating that the liquid level has reached a certain point. This can include ringing an alert, turning off the liquid flow into the tank, or activating additional safety devices such as emergency shutdown valves.
Tank level alarms should be inspected and maintained on a regular basis to verify that they are working properly and to prevent problems. Personnel training on the proper usage and maintenance of the alarm system is also essential.
In summary, a tank level alarm is a device that monitors the liquid level in a tank and alerts operators or other workers when it exceeds a preset level. Tank level alarms measure the level of liquid in the tank using one or more sensors, which can be float, ultrasonic, conductivity, or radar sensors. The alarm or control system will take necessary action if the sensor delivers a signal indicating that the liquid level has reached a certain point. Regular inspection and maintenance of the alarm system, as well as personnel training, are required to ensure proper operation and prevent malfunctions.