How Radar Level Measurement Works
Non-contact radar level transmitters determine level by measuring how long a microwave signal takes to reflect off the surface, with no mechanical wear.
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Non-contact level measurement has no moving parts, which cuts maintenance cost substantially.
Working Principle
The transmitter emits a microwave signal towards the surface and listens for the reflection. Round-trip time is directly proportional to distance.
Why Frequency Matters
Devices in the 80 GHz class have a much narrower beam angle. In narrow tanks with internal obstructions, that keeps side-wall reflections from corrupting the reading.
Compared to Ultrasonic
- Radar is unaffected by temperature and humidity changes
- It stays stable where vapour and dust density are high
- It works under vacuum
Applications
Drinking water reservoirs, wastewater pumping stations and industrial process tanks are the most common deployments.
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