Threaded Radar Level Meter

Installation Requirement

1. Installed at 1/4 or 1/6 of the diameter away from tank wall.

2. The top plane of the conical tank can be installed in the middle of the tank top, It is guaranteed to measure to the bottom of the cone.

3. When there is a stock in tank, the antenna should be vertically aligned with the material surface. If the material level is uneven, level meter installation direction must be adjusted by universal flange. The angle of the horn makes the horn aim at hte material surface as much as possible. (Because the inclined solid surface will cause echo attention, Even the problem of signal loss)

4. Stir
When there is stirring in the tank, keep the meter away from the stirrer if necessary. After installation, "false echo learning" should be carried out under agitation, In order to aliminate the false echo effect generated by the stirring, the installation should use wave guide pipe.

5. False echo storage
When there is a stirring blade in the tank that interferes with the radar measurement, if the stirring blade cannot be avoided, a false return is required. Wave storage eliminates interference signals generated by false waves. If you want to get the normal level echo, the false echo storage can store the echo signal between the envelope curve in the figure below, the storage is defined as a false signal, and a normal livel echo signal isn obtained.

6. Guide wave pipe installation
Use guide wave pipe installation (guide wave pipe or by-pass pipe), can avoid obstacles and foam influence. Due to feeding, mixing or other process handlings in container, it will generate foam on the surface so signal will be attenuate. If bubbles caused measurement errors, should install the sensor in the guide wave pipe, oruse guided wave radar level meter. Measurement inside the guide wave pipe, the guide wave minimum diameter is 50mm. In the connection guide wave pipe, should avoid big cracks and welding. In addition, carry out "virtual False echo learning".

7. Design requirement for guide wave pipe

1)Metal material, smooth inside the tube;

2)Preferably stretched or longitudinal welded stainless steel pipe;

3)The weld must be as flat as possible and coaxial with the hole;

4)While using pre-welded flanges or extending the sleeves and using a ball valve, the transition pipe must be aligned on the inside and fix after accurate matching;

5)The gap on the transition pipe is <=0.1mm;

6)Do not weld along the pipe wall. The inner wall of the guide wave pipe must remain flat and smooth. If user accidentally weld the inside, you should remove the uneven places and weld bead. Otherwise it will cause serious interference echo, so as to bring convenience to the attachment of the medium;

7)Guide wave pipe must reach at least the desired minimum filling height because the measurement can only be carried out in the tube;

8)Aperture <= 5mm, any number single side or full pass;

9)The antenna diameter of the sensor should be as consistent as possible with the inner diameter of the pipe;

10)The diameter should be consistent thoughout the length;