Non-contact radar level sensors transmit a narrow beam of microwaves from an antenna system through the air to the surface of the product. The microwaves are reflected by the product surface and received back by the antenna system. Internal electronics calculate the time of flight (TOF) or how long it took the pulse to return to the antenna. The TOF is converted into a level measurement based upon the vessel parameters programmed into the sensor. Non-contact radars measure liquids or solids continuously with levels being updated in just seconds.

NCR video

Strengths

• Powerful 80 GHz radar significantly outperforms old 26 GHz technology
• 4° versus 10° beam angle for better precision
• Substantial 393-foot measuring range
• Same sensor technology used by self-driving cars
• Strong signal performs well in dust
• Narrow beam can be precisely targeted to avoid structure
• Fast reaction/update time tracks filling or emptying activity
• Versatile for use in solids, liquids, and slurries
• Signal not affected by corrugation
• Loop power capability
• Compatible with BinView® software
• 4-20 mA and Modbus RTU communications
• Wireless communications available to reduce cost of installation

Considerations

• Single point measurement will not account for variations in material topography
• Minimum dielectric constant of material must be above 1.3