Level (Measurement)

2 wires non contact Radar level measurement (high frequency)

2 wires non contact Radar level measurement (high frequency)

The SAAB radar uses a high frequency signal (5 to 26 GHz) which transmit frequency increasing linearly during the measurement. The signal is emitted, reflected on the measuring surface and received time-delayed. For further signal processing the difference is calculated from the actual transmit frequency and the receive frequency. The difference is directly proportional to the distance i.e. a large frequency difference correspond to a large distance and vice versa. The frequency difference is transformed via a Fourier transformation (FFT) into a frequency spectrum and then the distance is calculated from the spectrum. The level results from the difference between tank height and distance.

Technical bulletin

Manufacturer Saab, Emerson Process Management
Fluids Liquids, suspensions
Types Technology high frequency (5 to 26 GHz)
Max Pressure & Temperature ratings 10 Bar & -40 to 150°C
Height tank Up to 30 meters
Accuracy +/- 10 mm (5 GHz) & +/- 3 mm (26 GHz)
Options Conic available antennas from DN50 to DN 150, PFA coated probe
Advantages 2 wires radar, removale head on load, condensation unsensitive antennas, emission in circular polarisation

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