How to manage SIS instruments that are interconnected in winter
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How to manage the series-connected SIS instruments in winter to ensure their accuracy
Identify the instruments that have failed due to inadequate anti-freezing measures, submit an application to temporarily bypass such instruments, and resume their use once the temperature rises back to normal levels
Start with the root level; if it’s one-to-one, then make a major modification to turn it into two-to-two or three-to-two. As for the management methods, check the heat tracing effect.