With the need for industrial automation development, the instrumentation industry is developing rapidly, but most of these smart instruments come with a large number of microelectronic devices, which have problems such as low insulation strength.
Therefore, the lightning protection of smart meters is very important, especially in the thunderstorm season, so as not to cause great losses. Today we will see what are the methods for lightning protection of radar level meters.
1. Lightning protection starts from grounding fractions, the shell of the radar level meter is very similar to the control cabinet, special console, power cabinet, etc.
The shell should be adjacent to the common flat steel. The instrument task power supply, such as a 24V negative terminal, is connected to the instrument ground and the input and output ground of the totalizer to form equipotential. The grounding of intrinsically safe grounding, safety grids, suppression grids, and safety devices should also consider whether the instrument reference points can form equipotential when they are adjacent to each other.
2. Intelligent instrumentation power supply lightning protection should not be ignored. Intelligent instrumentation installed anti-surge protection, paying attention to the fractional elements or surge, to ensure that the instrumentation does not exceed the voltage limit. A surge attenuator is mainly used to induct lightning surges in thunderstorms when the overload current will be collected to the ground.
3. For smart instrumentation equipped with a trust channel surge device, not only to ensure accurate, stubborn, and flexible dynamic transmission but also in thunderstorm weather to the ground release over-voltage surges to ensure transmission safety.
4. Regularly on the intelligent instrumentation of the power fractional grounding, convergence bar, grounding body, surge device, power supply lightning fence, etc. to find and repair, and timely replacement.