Xi'an Kacise Optronics Co.,Ltd.
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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° |