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Dear All, I want to send a signal 4-20 ma from DCS through a converter (4-20 ma to ethernet) to the internet network and then from a PLC that is connected to internet i will get it. Is it possible that a virus can spread through internet to converter and then to PLC? I mean if virus can...

we have a problem with reading through level gauge on steam drum with 400 C operating temperature and 120 bar pressure. Reason for this is the glass (mica) that is used to read the level because of steam has become blurred, and reading is difficult. Is there any way to fix the problem? I mean a...