The principle of a servo tank gauge is based on hydrostatic pressure measurement. A servo tank gauge is a device used to measure the level and temperature of liquids in storage tanks. It consists of a probe, which is installed inside the tank and a processing unit, which is located outside the tank.
The probe consists of a series of electronic sensors that are mounted at various depths along a long, flexible cable. The cable is lowered into the tank until it reaches the bottom. The sensors measure the hydrostatic pressure exerted by the liquid on the probe, which is directly proportional to the liquid’s depth.
The processing unit receives the signals from the sensors and calculates the liquid level using a microprocessor. The liquid temperature can also be measured using a temperature sensor that is integrated into the probe.
The servo tank gauge uses a servo motor to control the position of the probe inside the tank. The servo motor moves the probe up and down, keeping it in the correct position to measure the liquid level accurately. The servo motor is controlled by the processing unit, which receives signals from the sensors and adjusts the position of the probe accordingly.
The servo tank gauge can provide accurate and reliable measurement of the liquid level and temperature in storage tanks. It is commonly used in the oil and gas industry, chemical industry, and other industries where accurate measurement of liquid levels is critical for inventory control, process optimization, and environmental protection.