The Causes Of Non-contact Radar Level Gauge No Echo Failure Are Diversified, And Solutions Are Discussed

The occurrence of radar level gauge no echo failure may be due to various reasons. Non-contact radar level measurement will introduce two cases for better understanding.

Case 1:

Working environment: At normal temperature and pressure, there is a small amount of steam, and the measuring medium is gypsum slurry.

Problem manifestation: jump occurs, and the signal disappears.

Cause analysis: complex working environment; the installation position of the radar level gauge is too close to the container wall; the bottom of the container is inclined, and there are obstacles nearby, resulting in increased clutter interference and too small real signal.

Solution: adjust the range, optimize the echo threshold and envelope amplitude, and perform empty tank learning to identify false echo signals.

Case 2:

Working environment: sewage treatment.

Problem manifestation: jump occurs.

Cause analysis: There is interference under the water well, and the radar installation position is interfered by the iron pipe.

Solution: Re-adjust the installation position and debug the non-contact radar level measurement parameters.

The above are two typical cases provided by after-sales service. From these cases, we can see that an important reason for the radar level meter's no-echo failure is improper installation location selection. If the radar level meter is installed too close to the container wall, or the installation position is not perpendicular to the measured medium, the microwave pulse may not return accurately, and the signal cannot be detected. In this case, the solution is to adjust the installation position to ensure that the signal can return normally.

In addition to the above situations, the radar level meter's no-echo failure may also be caused by other factors. For example, the radar antenna is contaminated or attached with foreign matter, which may cause the signal to be unable to be transmitted, resulting in no-echo phenomenon. In addition, in liquid measurement, low-dielectric liquids may also cause no-echo conditions due to their weak transmission ability. For the failures caused by these special situations, it is recommended to consult clearly when purchasing a radar level meter and choose non-contact radar level measurement to avoid such problems.