Radar level transmitters are devices that use electromagnetic waves to measure the level of liquids or solids in tanks or vessels. They are a non-contact type of level sensor, which means that they do not need to be in direct contact with the material being measured. This makes them ideal for applications where the material is hazardous, corrosive, or otherwise difficult to measure.
There are two main types of radar level transmitters:
- Continuous wave radar (CW radar) transmitters transmit a continuous wave of electromagnetic energy and measure the time it takes for the wave to reflect back from the surface of the material being measured.
- Pulsed radar transmitters transmit a short pulse of electromagnetic energy and measure the time it takes for the pulse to travel to the surface of the material and back.
Radar level transmitters are used in a variety of field automation applications, including:
- Liquid level measurement: Radar level transmitters are commonly used to measure the level of liquids in tanks, silos, and other vessels. They are also used to measure the level of liquids in pipelines and other flowing systems.
- Solids level measurement: Radar level transmitters can also be used to measure the level of solids in tanks and vessels. However, they are not as accurate as they are for liquids.
- Level control: Radar level transmitters can be used to control the level of liquids or solids in tanks or vessels. For example, they can be used to maintain a constant level in a tank or to prevent a tank from overflowing.
- Safety monitoring: Radar level transmitters can be used to monitor the level of liquids or solids in tanks or vessels and to warn of potential hazards, such as a tank overflowing or a pump running dry.
- Quality control: Radar level transmitters can be used to monitor the quality of products or processes. For example, they can be used to measure the level of a product in a container or to monitor the flow rate of a liquid.
The specific type of radar level transmitter used in a particular application will depend on the specific requirements of the application. For example, the type of material being measured, the accuracy required, and the environmental conditions will all affect the choice of transmitter.
