Radar level meter is a common product type of level instrument, which has the advantages of accurate measurement, stable performance, high reliability, easy maintenance and wide application range. It can be installed in various metal and non-metal containers or tanks to measure the level of liquid, slurry and particles. So, what special conditions will it be installed in?
1. Selection under stirring condition
In the stirred tank, generally do not use the guided wave radar level gauge, the force brought by stirring, it is easy to bring the guided wave radar cable into the stirring device, or the rod guided wave radar rod to pull the bend. Therefore, it is only possible to choose non-contact measurement of frequency modulation or high-frequency horn radar level meter to measure.
2. Selection under vacuum conditions
Under vacuum conditions, the boiling point of a liquid will be much lower than at standard atmospheric pressure. There are a lot of liquids that start boiling at 30-40 degrees Celsius. Especially the reaction kettle and evaporation kettle, when there is no vacuum, the liquid is very calm, the vacuum is pumped, the liquid level fluctuates greatly, and it is boiling foam and small water beads. In this case, only the non-contact radar can be used, and then certain changes must be made on site to make it work normally.
Third, the medium contains a lot of foam, water steam, dust selection
Generally there are a variety of forms of media, most of them are liquid, we generally recommend to choose the frequency modulation radar level meter measurement, its operating frequency has the electromagnetic characteristics of terahertz band, such as: has the ability to penetrate non-polar substances, in the strong adhesion strong dust industrial environment, has a very ideal measurement stability and environmental anti-interference ability; For strong dust conditions, we can add a universal joint to adjust the measurement direction, with purging function, in order to prevent measurement errors. 4. Selection of operating temperature above 200℃
Radar level meter generally operating temperature of -40℃-150℃. However, under high temperature conditions, we must choose a high temperature radar level meter to ensure that the radar level meter can work normally.
The application range of radar level meter is very wide, across the electric power, medicine, steel, metallurgy, cement, petrochemical, paper, food and other fields, but the application of different working conditions, the type of radar level meter choice is also very important.
What do you need to pay attention to when using radar level meter?
1. If the radar level meter is used outdoors and the LCD screen is aging in order to avoid long-term exposure to sunlight, it is recommended to install an awning or protective box for the meter.
2. If the radar level meter is used in the occasion of corrosive gases or liquids, or is used at the seaside or sea, the anti-corrosion radar level meter should be selected. In addition, if the instrument is used in an environment with corrosive gases, in order to avoid corrosion of the instrument, it should also be equipped with an anti-corrosion jacket.
3. If the radar level meter is used in a particularly hot and cold place, because the ambient temperature may exceed the working requirements of the instrument, in order to ensure the normal operation of the instrument, it is recommended to add a thermostat around the instrument. 4. If the radar level meter is used in the lightning frequent area, although the meter itself has a lightning protection device, for safety reasons, it is recommended to install a special lightning protection device at the inlet and outlet end of the radar level meter.
5. When using the radar level meter, pay attention to installing protective tubes for wires and cables to prevent water and rodents from biting.
6. When using the radar level gauge, care should be taken to keep the radar level gauge perpendicular to the measured liquid level, and ensure that there are no other obstacles within the conical range of the radar wave emission.
7. If the radar level meter is used in the environment of dust, steam, fog, liquid surface foam, floating matter, liquid stirring, wave, etc., please pay attention to the special selection of radar level meter!
According to different working conditions and complex environments, these factors increase the difficulty of accurate measurement of radar level meter, so it is recommended to consult professional and technical personnel of radar level meter in selection!