Vedelikutasemele

Vedelikutasemele is an Estonian term referring to the vertical height of liquid in a container, commonly described as the liquid level. It is a key variable in process control and inventory management, indicating how full a tank is relative to its bottom or to a defined reference point. The term is used in industrial, laboratory, and consumer contexts and is often associated with sensors, controllers, and alarm systems.

Measurement methods include float-based level sensing, which uses a buoyant float connected to a sensor to indicate level; hydrostatic pressure sensors, which infer level from the liquid’s weight and density; and non-contact techniques such as ultrasonic and radar level sensors that calculate level from travel time or phase shift of emitted signals. Capacitive sensors detect changes in capacitance caused by immersion of a liquid with a different dielectric constant. Optical and conductivity sensors are used for discrete level detection or in-line monitoring. Many systems combine multiple methods to improve reliability.

Applications span storage tanks, process vessels, water treatment plants, fuel depots, chemical plants, and the beverage and food industries. Vedelikutasemele supports automatic fill and drain control, pump sequencing, alarm triggering for overfill or dry-run, and inventory tracking.

Considerations for accurate measurement include foaming, turbulence, density and temperature variations, suspended solids, and tank geometry. Installation issues such as wetted materials, sensor placement, and exposure to corrosive liquids affect longevity and accuracy. Modern level systems commonly interface with programmable logic controllers (PLC) and use analog (4–20 mA) or digital protocols (Modbus, HART) for integration with broader control architectures.