I am not sure what the VI is supposed to be doing. It seems like it will keep track of time it takes to execute x (=3600xNumeric+1) numbers of iterations. How long it takes depends on the system. If the VI runs slower on a particular system, it will take longer to execute the same number of loop iterations than on another station. For example, on my machine it took 6 min to execute the VI with Numeric=1. Another factor is the wait time set in the loop to =100. I don't see anywhere this taken into the consideration.
I am sending you another VI that counts the time from the start of execution until the Stop button is pressed. Of course, you can replace the Stop button with a condition that suites your needs.
Hope this helps.
Zvezdana S.