The Difference Between Guided Radar Type Level Transmitter And High And Low Frequency Radar Level Gauge

At present, radar level gauges are mainly divided into two types: high-frequency and low-frequency radar level gauges and guided radar type level transmitter. When choosing to use high-frequency radar or low-frequency radar level meter, factors such as on-site working conditions and measuring range need to be considered. The guided wave radar level gauge includes two types: the cage-type weight type and the rod-type direct plug-in type. The differences between guided wave radar level transmitters and ordinary radar level gauges are mainly explained from the following four aspects.

1. The guided wave level gauge is a contact type liquid level gauge, while the ordinary radar level gauge is non-contact. Therefore, in some occasions with higher food grade requirements, the guided wave level meter cannot be used.

2. guided radar type level transmitter need to pay more attention to the corrosiveness and adhesion of the medium, and the installation and maintenance of guided wave radars that are too long are also more difficult. In addition, general guided wave radar also has a bottom detection function, which can be corrected based on the measured value of the bottom echo signal to make the signal more stable and accurate.

3. Ordinary radar level gauges can be used interchangeably, but guided wave radar generally cannot be used interchangeably because the length of the waveguide rod (cable) is fixed according to the original working conditions. Therefore, the selection of guided wave radar is more troublesome than ordinary radar.

4. Ordinary radar level gauges are commonly used on tanks of 30 and 40 meters, and can even measure up to 120 meters. The guided radar type level transmitter also needs to consider the stress of the waveguide rod (cable), so the measurement distance of the guided wave radar is generally not very long. In some special working conditions, such as when there is stirring in the tank, large medium fluctuations, and when measuring the level in a small tank, guided wave radar has obvious advantages and can measure the liquid level more stably and accurately than ordinary radar.