YURA-FMW11 Frequency Modulated Radar Level Gauge
YURA-FMW11 Frequency Modulated Radar Level Gauge
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Measurement medium: liquid
Measurement range: 0.1m ~ 30m
Process connection: G1½A / 1½NPT thread / flange ?DN 40
Process temperature: -40?80?
Process pressure: -0.1?0.3 MPa
Antenna size: 32mm lens antenna
Antenna material: PTFE
Accuracy: ±2mm
The general principle of frequency-modulated continuous wave radar level gauges is that the radar emits electromagnetic waves at the top of the tank. After the electromagnetic waves are reflected by the medium, they are received by the radar. The frequency difference δf between the received signal and the transmitted signal is proportional to the distance R from the medium surface : R = C (velocity) * δf ( frequency difference) / 2 / K ( modulation slope). Since the speed of light C and the modulation slope K are known, the distance R from the material surface at the radar installation position can be obtained by estimating the frequency difference δf . Then, by subtracting the spatial distance from the radar to the material surface (referred to as the empty height) from the known total height of the tank, the height of the material level can be obtained.
