How To Choose A Suitable Guided Wave Radar Level Meter? Rod Type Vs Cable Type

Guided wave radar level meters also have different detection components, such as rod type and cable type. When users choose guided wave radar level meters, they are often unsure whether to choose rod type or cable type. In fact, there is no absolute difference between the two types. The key is whether they are suitable for specific application scenarios.

In general, the measurement range of rod-type guided wave radar level meters is 6 meters, while the measurement range of cable-type guided wave radar level meters can reach 75 meters. Such a setting mainly takes into account the convenience of transportation and installation. Therefore, if the liquid level with a measurement range greater than 6 meters is required, a cable-type guided wave radar level meter can be selected; otherwise, a rod-type guided wave radar level meter can be selected.

In addition, rod-type guided wave radar level meters have a strong ability to penetrate steam and foam. Therefore, if there are bubbles or boiling in the medium, it is recommended to use a rod-type guided wave radar level meter to obtain more accurate measurement results.

In addition, for liquid media with a small dielectric constant, it is recommended to use a cable-type guided wave radar level meter or a dual-cable guided wave radar level meter. Generally speaking, rod-type guided wave radar level meter can measure any medium, provided that the dielectric constant is greater than or equal to 1.8; while dual-cable guided wave radar level meter requires a dielectric constant greater than or equal to 1.6. Therefore, when measuring liquid media with a smaller dielectric constant, cable-type guided wave radar level meter is more stable and accurate than rod-type.

Whether it is rod-type guided wave radar level meter or cable-type guided wave radar level meter, there are different configurations such as dual-rod type, dual-cable type, single-rod type and single-cable type. When choosing, you can choose the most suitable type according to the actual working conditions.

In addition to correctly selecting the type of guided wave radar level meter, we also need to pay attention to the installation position. Generally speaking, the probes of these two guided wave radar level meters are at least 300mm away from the tank wall and at least 200mm away from obstacles in the tank. At the same time, the bottom of the probe is at least 30mm away from the bottom of the tank.

Choosing the right type of guided wave radar level meter is based on the consideration of specific application scenarios. At the same time, a reasonable installation position is also very important.