Radar Level Transmitters

Radar level transmitters are non-contact measurement devices used by water utilities and wastewater treatment facilities to continuously monitor water levels and pressure in tanks, reservoirs, wet wells, and process vessels without physical contact with the liquid surface. These advanced instruments use microwave radar technology to provide accurate, real-time level data that helps operators optimize pump operations, prevent overflows, and maintain proper water levels in storage and treatment systems while eliminating maintenance issues associated with contact-based level sensors.

What is a radar level transmitter?

Radar level measurement is a technology that utilizes electromagnetic waves for liquid level detection in water and wastewater applications. Radar level transmitters measure the distance between the surface of water, wastewater, or process liquids and the sensor by transmitting and receiving microwave signals to accurately determine fluid levels in tanks, basins, and treatment vessels.

In water and wastewater facilities, these instruments are commonly deployed in:

• Raw water storage tanks to monitor incoming water supplies and ensure adequate reserves for treatment processes


• Clarifier basins to track sludge blanket levels and optimize settling performance


• Chemical feed tanks for coagulants, disinfectants, and pH adjustment chemicals to prevent shortages during treatment


• Wet wells and lift stations to control pump operations and prevent overflow conditions


• Digesters in wastewater treatment to monitor solids levels and optimize retention times


• Final effluent channels to verify proper discharge levels and regulatory compliance

The non-contact nature of radar measurement makes it particularly valuable in these environments where media may be corrosive, contain suspended solids, or generate foam that could interfere with other level measurement technologies.