As a supplier of radar level meter for many years, Guangdong Kaidi Energy Technology Co., Ltd. often receives many inquiries, among which the more frequently mentioned question is "Why should the radar level meter set the dielectric constant?" For this question, today's detailed answer.

Always in the radar level meter manual to see a sentence: suitable for use in the low dielectric constant, then the dielectric constant in the end on the measurement will have what effect it? Mainly in two aspects, the first is that it will affect the absorption (reflection) rate of electromagnetic waves on the surface of the measured medium, and the second is that it will affect the wavelength (frequency) of electromagnetic waves will change when they pass through the medium。

 Customers will always ask, radar level meter need to set the media constant? It is important to know that such a statement is not for all level meters, some models do not have the option of setting the medium constant, such as non-contact radar and single rod guide wave radar only the option of debugging sensitivity。

Most of the vega radar level transmitter is purely to complete the "transmit → reflect → receive" process, according to the needs of the actual working conditions to adjust the sensitivity, can accurately detect the need to measure the echo signal in a variety of echoes, so theoretically the measurement process is not required to set the dielectric constant。

Different situations are analyzed differently, and there are some special situations encountered during the measurement. In the process of radar level measurement, accurate detection of echoes, to exclude excess echoes, this process will greatly increase the amount of radar level meter operations, so this time to increase the parameters of setting the dielectric constant, will be more accurate measurement。