KLD103 High Precision Fluid Level Meter Radar Water Level Transmitter

80G FM Radar Level Meter

Measuring principle
A radar signal is emitted via an antenna, reflected from the product surface and received after a time t. The radar principle used is FMCW (Frequency Modulated Continuous Wave).
The FMCW-radar transmits a high frequency signal whose frequency increases linearly during the measurement phase (called the frequency sweep). The signal is emitted, reflected on the measuring surface and received with a time delay, t. Delay time, t=2d/c, where d is the distance to the product surface and c is the speed of light in the gas above the product.
For further signal processing the difference Δf is calculated from the actual transmitted frequency and the received frequency. The difference is directly proportional to the distance.
A large frequency difference corresponds to a large distance and vice versa. The frequency difference Δf is transformed via a Fast Fourier Transform (FFT) into a frequency spectrum and then the distance is calculated from the spectrum. The level results from the difference between the tank height and the measured distance.

1. Transmitter
2. Mixer
3. Antenna
4. Distance to product surface, where change in frequency is proportional to distance
5. Differential time delay, Δt
6. Differential frequency, Δf
7. Frequency transmitted
8. Frequency received
9. Frequency
10. Time

The main advantages of KLD103 series FM radar level meter are as follows:

• Based on the self-developed CMOS millimeter-wave radio frequency chip, it realizes a more compact radio frequency structure, a higher signal-to-noise ratio, and a smaller dead zone.
• The 5GHz operating bandwidth enables the product to have higher measurement resolution and measurement accuracy.
• The narrowest 3° antenna beam angle, the interference in the installation environment has less impact on the instrument, and the installation is more convenient.
• Shorter wavelengths and better reflection properties on solid surfaces.
• Support remote debugging and remote upgrade, reduce waiting time and improve work efficiency.
• Support mobile phone Bluetooth debugging, convenient for on-site personnel maintenance work.

Technical parameter

Product Size (unit: mm)

Field application

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.