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4. Principles
4.1 Product Principles
The guided wave radar emits a high-frequency pulse wave to be transmitted along with the
detection component (steel rope or connecting rod). When it comes in contact with the
object to be measured, the pulse wave will be reflected and some of the energy will be
reflected as well due to the different dielectric constant of air and the material. The time
difference between the reflection wave and the emission wave can be used to calculate
the distance between the surface of the measured object and the guided wave radar level
sensor.
4.2 Bottom Tracking Probe Technology
4.2.1 Bottom Tracking Probe Technology
The product is equipped with a bottom tracking probe technology. This function is very
useful in increasing the sensitivity when the dielectric constant of the measured object is
low, such as the plastic particles, material fragments or that in the liquefaction container.
When the dielectric constant is 3~10, the bottom tracking probe function will be enabled
automatically as long as the echo signal is not detected. The measurement value is
calculated based on the dielectric constant recorded the last time. In this case, the
instrument accuracy depends on the stability of the dielectric constant.
If the dielectric constant of the media is lower than 3, the bottom tracking probe function
will be enabled all the time. Under this circumstance, you must input the dielectric constant
of the media, which is quite important for measurement.
Distance
Material Height
