High-frequency radar level meters are relatively common level measurement tools and can be used in a variety of complex working conditions. Today, we would like to introduce how high-frequency radar level meters are used when faced with vacuum and agitation conditions.
Under vacuum conditions, many liquids start to boil at 30-40°C because the boiling point of the liquid will be much lower than at standard atmospheric pressure.
For example, the reactor and evaporation kettle in the pharmaceutical factory will be like this, and the height of the liquid will also change, not when the liquid is stable under vacuum, after the vacuum will the liquid will increase from 1 m to 3 m high, which is accompanied by boiling foam and fine water droplets.
In cases like this, it is recommended to choose a flared high-frequency radar level meter and to make certain adjustments on site.
In tanks with agitation, generally do not use guided-wave radar, but always choose a high-frequency radar level meter with non-contact measurement. This is because the stirrer can easily become entangled with the guided-wave radar cable or be pulled off directly by bending it.
Not only high-frequency radar level meters, all radar output signals on the market now basically use 4-20mA and 485 two kinds, currently dominant in the market is 4-20mA, suitable for industrial occasions applications. Relatively speaking, the use of 485 is less, and more suitable for low power consumption occasions, for example, water conservancy and hydrology, flash flood warnings, etc. Users can choose the right power supply according to their actual needs.