【Daily Question 200090420】Which instruments get damaged during a lightning strike?
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In the south, March and April are the thunderstorm seasons; if the control devices lack lightning protection measures, direct or induced lightning can often cause damage to the instruments. According to your statistics, what instruments get damaged or what accidents occur as a result of lightning strikes? Let’s start with ours: 1. During a lightning strike, interference signals get mixed into the vibration signals of the unit, and these false signals cause the unit’s protection system to activate, resulting in the unit stopping! 2. The power supply module of the paperless recorder was damaged by lightning ； 3. The power supply board of the belt scale secondary instrument is damaged.
With the Zhejiang University Zhongkong JX300, damage to an entire row has occurred twice; there are 16 modules in each row, and this might be related to the fact that surge protection measures were not in place at that time. The 8-channel input modules of Hilscher systems often have several channels that are damaged ； No damage caused by lightning has been found in Siemens’ PCS7 system at present.
Last year, there was a lightning strike incident that resulted in losses of 4 Allen-Bradley AI modules, one printer, and one computer used at the weighbridge station.
I have encountered cases where the Zhejiang University JX-300X AI module failed. The thermocouple input page is corrupted. It might be due to poor grounding.
Instances of lightning strikes included: on-site instruments such as EJA transmitters, electromagnetic flowmeters, and thermoelectric flue gas analyzers; DCS systems including Hollyland systems and Zhejiang University’s control system input modules
We have not yet experienced any incidents of instrument damage caused by lightning strikes here. Every year, the lightning protection agency comes to conduct lightning protection monitoring and issue relevant inspection reports. This seems to prove the saying that \"there is a reward for effort,\" and prevention is indeed key.
I remember that the lightning strike damaged more than a dozen mass flow meters. There was also one set of Bailey’s system communication cards that got damaged. Strangely enough, nothing else was damaged.
1 The industrial control computer has been damaged before. 2 The radio has been destroyed before
1 The industrial control computer has been damaged before. 2 The radio has been destroyed before
Here, we have quite a few incidents of lightning strikes and electrical failures; however, the instruments and control systems have not encountered any problems. Once, the lightning arrester on a high-voltage line was damaged, and at the same time, more than a dozen computers in the nearby village were destroyed by the fire. In deep sorrow. . . . . .
Since the facility has been in operation for less than a year, we have not encountered any thunderstorm conditions yet. However, four of the power modules of the e+h radar level gauges installed on our storage tanks have failed; it is suspected that this is related to the high currents generated by welding. If that is indeed the case, then these devices could also get damaged in the event of a lightning strike
1. The UPS in our office has switched to bypass mode and cannot be restored； 2. The enlarged version of the on-site vortex flowmeter was damaged by lightning ； 3. Transformer protection tripped ； 4. Compressor trip
What happens frequently is that the ADAM module gets damaged; other problems haven’t arisen yet