What are the lightning detection instruments? What are the purposes of these instruments?
Lightning detection instruments are designed to prevent potential hazards caused by lightning electromagnetic pulses. The sum of connecting conductors such as arresters, down conductors, grounding devices, surge protectors, etc. These parts are indispensable in lightning protection devices.
A lightning receptor is a metal object designed to receive direct lightning (lightning). The metal rod of the lightning receptor is called a lightning rod. The metal wire of the lightning receptor is called a lightning conductor or an overhead ground wire. The metal strip and metal mesh of the air-termination system are called lightning protection strips. All air-termination devices must be connected to the grounding device through a grounding lead.
The down-conductor is a metal conductor that connects the air-termination system and the grounding device. The down conductor of the lightning protection device shall meet the requirements of mechanical strength, corrosion resistance and thermal stability.
The grounding device refers to the general term for the buried ground electrode and the connection line from the ground electrode to the equipment.
Surge protector, also called lightning arrester, is an electronic device that provides safety protection for various electronic equipment, meters and communication lines. When the circuit or communication line suddenly generates peak current or voltage due to external interference, the surge protector can be shunted in a short time to prevent the surge from damaging other equipment in the circuit.
After the above device principle is finished, the next step is to discuss the types of lightning detection instruments. Do n’t worry if you want to know, I will introduce it below.
Laser rangefinder: mainly used for building area and safety distance detection; height and length inspection of air-termination system; distance between down conductors; places that are not easy to reach, such as chimneys, water towers, spires, etc .;
Thickness gauge: It is mainly used for the detection of lightning arrester material specifications, the thickness of metal closed tubes, cans or metal protective layers, and the thickness detection of lightning electromagnetic pulse shielding materials;
Theodolite: places that are not easy to reach, such as: chimneys, water towers, spires, etc .; lightning protection classification of buildings; height and length inspection of air-termination systems; length, width, and height measurement of buildings;
Tension meter: Lightning arrester bracket test; Vertical pull test of down-conductor fixed bracket (49n);
Combustible gas tester: detection of combustible gas concentration in flammable, explosive or fire dangerous environment; composite gas detector can also detect various toxic gases;
Earth network tester: mainly used for testing large-scale ground network equipment such as substations, power plants, wind farms, communication stations, and oil depots;
Soil resistivity tester: grounding device detection; average soil resistivity measurement at different depths on the ground surface; ground pressure detection;
Well, there are many more about lightning detection instruments, I will not list them here. If you want to know more, please pay attention to this site.
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