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Radar Level Transmitters

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True Echo Dual Frequency Pulse Radar Level Transmitter For Solids

Series:
PRS
True Echo Dual Frequency Pulse Radar Level Transmitter For Solids
Enclosure Protection:
NEMA 6; IP68
Outputs:
Isolated 4-20 mA
Range:
1' - 50',1' - 100'
Details

True Echo Pulse Radar Level Transmitter For Liquids

Series:
PRL
True Echo Pulse Radar Level Transmitter For Liquids
Enclosure Protection:
NEMA 6; IP68
Outputs:
Isolated 4-20 mA
Range:
1' - 50',1' - 100'
Details

True Echo Explosion Proof Pulse Radar Level Transmitter

Series:
PRX
True Echo Explosion Proof Pulse Radar Level Transmitter
Enclosure Protection:
NEMA 4X; IP65
Outputs:
Isolated 4-20 mA
Range:
1' - 50',1' - 100'
Details

How They Work

Radar level transmitters emit low-energy, high-frequency electromagnetic impulses, generated by the sensor’s circuitry. For Guided Wave Radar sensors, these electromagnetic waves are propagated along a probe, which is semi-submerged in the substance to be measured. For Free Air Radar sensors, the waves travel through the air, focused by an antenna.

When the electromagnetic waves hit the surface of the substance, part of the impulse energy is reflected back to the transmitter, either up the probe or through the air. For flat or still surfaces, impulses at one frequency are sufficient for an accurate reading. For uneven or piled surfaces, multiple frequencies are used to generate the best possible received signal. The circuitry of the level transmitter then calculates the level based on the time difference between the impulses sent and the impulses reflected.

True Echo™ technology is not affected by pressure, vacuum, temperature, viscosity, foam, or dust. Changes in dielectric constant or material accumulation on the probe or antenna do not affect the level measurement due to the dynamic sensing technology programmed in our True Echo™ Radar Level Transmitters.

Applications