This radar level measurement meter adopts the measurement method of microwave pulse and can work normally in the industrial frequency band range.
The radar level measurement is based on the time domain reflection principle (TDR), where part of the radar level meter pulse is reflected to form an echo and returns along the same path but the final value of the measuring range should be at least 100 mm from the tip of the antenna, taking into account corrosion and adhesion effects. for overflow protection, a radar level meter safety distance can be defined to be attached to the blind spot. The minimum measuring range is related to the antenna. With different concentrations, the foam can both absorb microwaves and reflect them, but under certain conditions it is possible to perform measurements. Back to the pulse transmitter.
What bothers users in the field of level measurement today is the level measurement of some large solid silos, especially for silos filled with dust and disturbance within 50/100m. Instruments of related technologies, such as capacitance or guided wave radar TDR, will be subject to strong tension load when the material level drops during placing, which may damage the instrument or pull the bin top down.
The heavy hammer often has the problem of burying the hammer and needs frequent maintenance, as do most other mechanical instruments. High dust conditions may exceed the capacity of a non-contact ultrasonic level measurement system. High-frequency FM radar technology is particularly suitable for the level measurement of such large solid silos.
The current high-frequency radar is generally a radar level meter operating in the K band (24~26GHz). The higher the operating frequency of the radar is, the shorter the electromagnetic wavelength will be, and the easier it is to have a better reflection on the inclined solid surface and narrow beam width, which can effectively avoid obstacles. The higher the frequency, the smaller the antenna can be used by the radar.
While the FMCW FM continuous wave microwave level meter transmits and receives signals at the same time, and more microwave signals are transmitted at the same time. The wave loss phenomenon in the measurement of high dust solid silos can be reduced in solid measurement. Therefore, the medium and high-frequency FM radar for solid measurement can provide accurate and reliable measurement, and has good application in such media as PP powder and PE powder in the chemical industry.
|Product||Radar Level Measurement|
|Measure Range||0-70 meters|
|Application||Rivers, Lakes, Shoal|
|Process Connection||Thread G1½ A"/frame /flange|
|Process Pressure||Normal pressure|
|Protection Grade||IP67 / IP65|
|Signal Output||4-20mA (Two-wire/Four)|
|Power Supply||DC(6~24V)/ Four-wire
DC 24V / Two-wire
Be installed in the diameter of the 1/4 or 1/6.
Note: The minimum distance from the tank
wall should be 200mm.
Note: ① datum
②The container center or axis of symmetry
The top conical tank level, can be installed at
the top of the tank is intermediate, can guarantee
the measurement to the conical bottom
A feed antenna to the vertical alignment surface.
If the surface is rough, stack angle must be used
to adjust the angle of cardan flange of the antenna
to the alignment surface.
(Due to the solid surface tilt will cause the echo attenuation, even Loss of signal.)