Seek help regarding lightning protection for instruments
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Connecting a lead wire to the transmitter and attaching it to the pipeline – will this prevent it from being affected by induced electricity during thunderstorms? If that’s possible, then the transmitter itself is made of metal materials and is installed on the pipeline – is it still necessary to run wires? I’m a newcomer; please give me lots of guidance
Doing this is incorrect; the instrument should be grounded separately, while taking care to avoid multiple grounding points.
2# zeqing Are you saying to provide a separate ground wire for the instrument in order to ground it? I’m not very familiar with this area. Could you be more specific?
Lightning protection should use specialized lightning protection grids.
4# guan*he Hello! If lightning protection grids are used, does each transmitter require one?
There are two ways in which instruments can be disturbed by lightning strikes: either the overhead power lines can be hit by lightning, causing damage to the signal lines, or lightning can strike near the signal cables; through capacitive and inductive coupling, this can generate a strong pulse disturbance on the signal lines, which sometimes even can damage the equipment and pose a risk to human safety. To address different causes of interference, the following two measures can be adopted to prevent lightning strikes: ① For coupling interference, we can use metal cable conduits or trays to lay the signal wires, as these conduits or trays provide excellent grounding. ②For overhead signal lines, lightning protection measures must be taken at the instrument input terminals, such as installing surge protectors, varistors, and robust filtering circuits to suppress interference.