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80G PTFE 34mm lens antenna Radar Level Gauge For strong corrosive liquid, steam, foam
Principle
KLD800 series 80G radar level gauge adopts frequency modulated
continuous wave (FMCW) technology. The antenna emits a
high-frequency FM radar signal, and the frequency of the radar
signal increases linearly. The transmitted radar signal is received
by the same antenna after being reflected by the measured medium.
At the same time, the frequency difference between the transmitted
signal frequency and the received signal frequency is proportional
to the measured distance. The collected frequency difference signal
is subjected to fast Fourier transform (FFT) to obtain the spectrum
of the reflected echo, and the distance to the target to be
measured is calculated based on this.
Feature
⚫ Millimeter wave radar, the measurement accuracy can reach up to
±2mm, and the minimum measurement blind zone is 0.05m.
⚫ The smaller antenna size satisfies the measurement of more
working conditions.
⚫ A variety of lens antennas, smaller launch angles, more
concentrated energy, stronger echo signals, and higher reliability
than other radar products under the same industrial and mining
conditions.
⚫ It has stronger penetration and can be used normally in the case
of adhesion and condensation.
⚫ The dynamic signal range is larger, and the measurement of low
dielectric constant media is more stable.
⚫ Multiple measurement modes, radar response in fast measurement
mode
Product Dimension
Installation connection diagram:
Working Principle
The radar antenna transmites narrow microwave pulse which will be
reflected back when reaching the surface of the medium tested and
then received again by the antenna system. The signals shall be
transmitted to the electric circuit and then converted into level
signals. As the transmission speed of microwave is so fast, the
time used for the microwave transmission to the surface of the
medium tested and then reflected back is almost 0.
Technical Specification and Model Selections
Model | KLD803 |
Medium | strong corrosive liquid, steam, foam |
Measuring range | 0.1m~10/20/30/60/100m |
Process connection | flange ≥ DN50 |
Process temperature | -40~130℃ |
Process pressure | -0.1~2.5 MPa |
Antenna size | 34mm lens antenna (according to flange size) |
Antenna material | PTFE |
Accuracy | ±1mm (range below 35m) ±5mm (range between 35m and 100m) |
Protection class | P67 |
Center frequency | 80GHz |
Launch angle | 3° |
Power supply | Two-wire /DC24V / four-wire /DC12~24V / four-wire /AC220V |
Casing | aluminum/stainless steel |
Signal output | two-wire /4...20mA/HART protocol four-wire / 4...20mA/ RS485 Modbus |
Installation Requirements
When installing the instrument, avoid installing it above the
material inlet, and try to avoid various objects that affect the
signal, such as stirring paddles, etc.
Connection
Lens Antenna Diameter | Φ32mm lens Antenna | Φ42mm lens Antenna | Φ76mm lens Antenna | Φ74.7mm lens Antenna with air purge |
Beam Angle | 7° | 6° | 3° | 3° |