Application Notes

EAP-030040

A remote field transmitter connected to a local indicator which is protected by a lightning surge protector begins to show inconsistent display values. What could be the trouble?

It may be a high time to replace the protector due to its lessened capacity, if the problems just started recently. Each lightning surge protector has a different lifetime, less capacity time. Lightning surge protectors, which have been installed in areas where lightning occurs frequently, should be tested and changed periodically. Replacing the protector with a new one in this instance may solve the problem.

Lightning surge protectors can be thought of as consumable items in areas where lightning is common. We would recommend for you to periodically check your lightning surge protectors and keep enough replacements on hand for the next lightning season. M-System's model C-106A-1 M-RESTER tester can be used to check most lightning surge protectors for proper function.

Alternatively, life monitor feature which models MDM2A and MAA contain helps you to decide when you should replace the surge protector, reduces maintenance and prevents downtime.

M-System has flexible solutions to meet your specific application and requirements. Consult our Signal Conditioners Data Library.