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+86 189 8978 2810


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ERT-A2120 High-Frequency Radar Level Transmitter

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ERT-A2120 high-frequency radar level transmitter for non-contact liquid level measurement and control

Integrated design for high-precision level monitoring

±2 mm accuracy for precise measurement

60 GHz high-frequency radar technology for fast and reliable response

Suitable for wastewater, rivers, reservoirs, and tank level applications

Ideal for demanding industrial and municipal environments

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DETAILS

Application

  • Wastewater level monitoring

  • River and reservoir water level measurement

  • Municipal water and drainage projects

  • Hydrology and water conservancy systems

  • Rainfall and flood monitoring systems

  • Mixing tanks and process vessels

  • Sewage treatment plants

  • Industrial and municipal automation projects

Description

The ERT-A2120 is a one-piece high-frequency radar level transmitter based on 60 GHz FMCW radar technology, providing stable and accurate non-contact liquid level measurement. With a narrow 9° beam angle, the sensor effectively suppresses false echoes caused by tank structures, turbulence, or environmental interference, ensuring reliable level readings.

The device supports level display, control, and alarm functions in a single unit, making it an ideal solution for automated liquid level control systems. Optional relay outputs enable high-level and low-level alarm control, allowing direct linkage with pumps and valves.

Two antenna configurations are available:

Lens Antenna Version – Suitable for various media, including liquids with impurities or turbulence

Basic Antenna Version – Recommended for clean, non-corrosive, impurity-free liquids

With robust materials, IP65 protection, and wide power supply options, the ERT-A2120 delivers long-term stability and low maintenance in complex field conditions.

Features

  • High-frequency 60 GHz radar level measurement

  • Non-contact liquid level detection

  • High accuracy: ±2 mm

  • Narrow 9° beam angle to suppress false echoes

  • Integrated level measurement, control, and alarm functions

  • Fast response time for dynamic level changes

  • Suitable for wastewater, rivers, reservoirs, and tanks

  • Optional lens antenna for complex or impurity-containing media

  • Optional relay outputs for high/low level alarms

  • Optional RS485 communication (Modbus RTU)

  • One-year warranty with lifetime technical support

Technical Details

Measuring Principle

High-frequency radar (FMCW)

Measuring Variable

Liquid level

Measuring Range

0–20 m

Blind Zone

≤ 20 cm

Accuracy

±2 mm

Resolution

0.005% of range

Transmitter Output

4–20 mA (default)

Alarm Output

Dual relay outputs (optional)

Communication Output

RS485 (optional)

Operating Voltage

DC 24 V or AC 220 V

Process Connection

M59 × 2 thread

Operating Temperature

-10 to 60 °C

Operating Humidity

0–95% RH

Protection Rating

IP65

Antenna Beam Angle

Transmitting Frequency

60 GHz

Accessories

We reserve the right to make technical alterations without prior notice.

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