Rosemount™ 3300 Level Transmitter – Guided Wave Radar

Reduce Maintenance, Increase Safety and Optimize Your Process

We have developed products using advanced radar technology since 1974, and our continuous improvement approach has resulted in radar transmitters that provide superior performance and reliability.
Guided wave radar devices have no moving parts and require minimum maintenance. They can measure both level and the interface between two media.
The technology is not affected by media density, varying temperatures or pressures, and provides reliable, accurate measurements in demanding applications.

Technology Explanation

Guided wave radar is based on microwave technology. Microwaves are only affected by materials that reflect energy which means that temperature variations, dust, pressure, and viscosity do not affect accuracy.
The device sends a low energy microwave pulse down a probe. When the pulse hits the media, a significant proportion of the energy is reflected back up the probe to the device. The level is directly proportional to the time-domain reflectometry. Because a proportion of the emitted pulse will continue down the probe, an interface can also be detected.

Handle Process Variations

In most processes varying conditions are common. Temperature, density, and viscosity may change. Variations in level measurement can easily occur under these conditions, but the guided wave radar technology is unaffected by these changes. The device does not need to compensate for changes in density, dielectric, or conductivity in the fluid and this makes this top down measurement very robust.