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Radar level transmitters offer a reliable and non-contact method for measuring the level of liquids and solids in tanks and silos. Utilizing frequency modulated continuous wave radar operating within the 76-81 GHz frequency range, these instruments are capable of accurately detecting the level of materials from a safe distance, eliminating the need to make contact with the material surface.
The working principle of radar level transmitters involves emitting electromagnetic pulses from an antenna at the desired measurement frequency. These pulses strike the material surface and are reflected back, allowing the time of flight between emission and reception to be calculated as a measurement of the distance to the surface. By selecting an appropriate antenna diameter ranging from 21mm to 76mm, and a beam angle as tight as 3 degrees, radar energy can be focused for optimal measurement performance.
The output of radar level transmitters can be customized to meet specific monitoring requirements, including standard 4-20mA analog signals, digital options such as HART, Modbus, and Ethernet/IP for remote monitoring applications. With fast response times under 1 second and a variety of process connections for easy installation, users benefit from a highly adaptable solution. Measurement ranges vary from 100mm up to 150 meters, depending on the instrument model and connection type selected.
Radar level transmitters are designed to withstand a wide range of temperature and pressure conditions, from cryogenic environments to 280°C and vacuum conditions up to over 25 bar. This ensures compatibility with the most demanding process conditions. By carefully selecting the appropriate radar level transmitter style, options, and accessories, optimised level solutions can be delivered for a variety of liquid storage and solid material silo applications.
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发表于 2024-7-25 16:41:51