Magnetostrictive level gauge encounters iron shavings
Thread Content
During the coal chemical production process, inaccurate level readings can occur due to various magnetic substances sticking to the magnetic float. Is there any way to solve this problem?
I replaced the magnetostrictive level gauge with differential pressure measurement (for non-metering purposes), and the results were very good. It used to need to be cleaned regularly.
Temperature isn’t the main factor; if the measurement range is small, the differential pressure will be inaccurate.
-50-degree double flanges can no longer be used either
1. The measurement accuracy does not depend on the differential pressure transmitter; it mainly depends on the accuracy of the density value. Differential pressure transmitters can achieve very high accuracy (above 0.1 grade), and they also have a long service life, good stability, and require little maintenance – these are the main reasons why I prefer to use differential pressure transmitters. Of course, not all measurements can be resolved using differential pressure. Regarding the temperature issue, in our facility, the liquid level at -40°C in the ammonia tank is measured using differential pressure, and the results are excellent; there has been no need for maintenance over the past few years.
2. The installation method requires specific design, taking into account the properties of the medium, anti-clogging measures, and the installation location.