You did not understand:
post your
complete sketch.From the very first to the very last line.
Your loop has two functions
functionTare();
functionAlarm();
You are asking for help because you yourself are unable to solve the problem.
using this method
Hi newcomer,
This thread wants to show you how you can speed-up getting helpful answers with small effort.
If you manage at least to post this way. You have the sympathy of the experienced users.
If you are willing to invest another 20 minutes these 20 minutes extra-time will save you a minimum of 200 minutes to finish your project.
best regards Stefan