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What should I do if the electromagnetic flow meter signal is too weak?
Published Time:
2022-09-16 15:02
Source:
Electromagnetic flow meters are commonly used pipeline measuring instruments. They are unaffected by the temperature, viscosity, and density of the fluid, and also have good wear and corrosion resistance. Therefore, they are widely used. Some users sometimes encounter the problem of weak signals from electromagnetic flow meters. So what should you do if the signal from the electromagnetic flow meter is too weak? Let eletta give you a detailed introduction below.
When you find that the signal from the electromagnetic flow meter is too weak, you need to check it, specifically:
1. Check if the pipe is full of fluid; check if the pipe is too close to the wall. If the pipe is too close to the wall, the probe should be installed on the diameter of the inclined pipe. Z-type probes can be used for setting, and it is not necessary to install them on the horizontal pipe diameter.
2. Slowly move the probes around the installation point to find the position with the strongest signal. This is to prevent situations such as scaling inside the steel pipe or local deformation of the pipe, which may cause the ultrasonic reflected beam to be reflected out of the expected area, resulting in a weak signal.
3. If the scaling on the inner wall of the electromagnetic flow meter's metal pipe is serious, some methods can be used to cause the scaling to fall off or crack and fall off by itself. For example, the impact method can be used. If this method is used, it is also necessary to check if there is a gap between the scaling and the inside. If there is a gap, it will not help the transmission of ultrasonic waves. When selecting pipes, carefully check their dense parts to ensure they are fully polished and bright, and apply coupling agent.
The above introduces how to deal with weak signals from electromagnetic flow meters. When encountering weak signals from electromagnetic flow meters, you can refer to the above methods to check where the problem is. In addition, during installation, be sure to follow the instructions.
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