How to select the suitable radar transmitter
Today, there are many types of level measuring instruments in the industry. Level transmitter aims at monitoring as visualization in control systems of the water level in the tank, cement in the silo tank and the water level in the river or used for control as controlling the level of chemicals in the tank to the desired level all the time. With so many level measurement technologies currently available, it can be difficult for end users to select the right solution for their particular application.
Radar level sensors are becoming an attractive option for level measurement in many industries with reliability and high accuracy. They are not sensitive to temperature or density changes, turbulences and vibrations.
The installation advantage is an important feature of the radar sensor. In addition to being installed on a closed tank, it can be installed with limited space. The smart sensors are being developed to be used in noise and obstruction process such as blades, vapor or dust on the probe.
The Radar level sensors have a variety of extension angles for microwave radiation, depending on the manufacturer, such as ± 5 mm, ± 3 mm, or up to ± 1 mm.
The frequency of the wave affects the properties of the level radar such as
- Permeation of radar signals – the wave length will be longer at low frequency and attenuation is less and then the wave can penetrate more obstacles. But if the frequency is high, the wavelength is shorter. This results in greater attenuation and less penetration. Therefore, low-frequency sensors are suitable for many dust and vapor applications.
- Antenna – the flat antenna which have a low blind range is used at high frequency, but may be difficult to install in short pipes. But if the frequency is low, blind range is longer. We have to use a horn antenna.
- Beam angle – when the high frequency, the angle is narrower which is suitable for narrow space process and to avoid obstacles. Even high frequency is useful in the applications, but there are still limitations. Due to measure on an inclined or undulating surface, a wide beam angle produces wider reflections and receives better reflections.
Have you ever feel difficult to select the suitable model in various types of radar transmitter for level measurement?
Matsushima -The Radar Level Transmitter is designed specifically for medium/long range measurement of all kinds of power, particle and bulk solids. The compact and high directional system with usage of higher frequency can realize the more stable level measurement. Adjustments can be done by entering simple parameters. The air purge function is normally integrated and there are many options such as angle adjustment for wider range of installation environments.
Radar Level Transmitter: MWLM-PR26Series (Solid application) high efficiency, ability to penetrate vapor, dust, mist, and the blind range. Therefore, it is ideal for dust and vapor conditions and can be used with large silo and small silo.
Radar Level Transmitter Monitoring Water & Sewage Works and River: MWLM-26Series It is designed specifically for short/medium range measurement of liquid, sludge and slurry. Even though solutions containing air bubbles or foam can be measured accurately.
