Hey Jimmy,
From what I understand you�re currently use LabVIEW to communicate with a meter from Micromotion that monitors the level of LN2 from the tank. Does the LabVIEW application control the removal of LN2 from the tank? If this is the case you could require users to login to use the application. You could then keep track of how much was used by each user. One possibly would be to write to a file the tank level when the user logins and when they logout. There is a shipping example called Login dialog that demonstrates how to have users login. It can be found by going to Help>>Find Examples and searching for logins in LabVIEW 7.
If you�re looking for an application already developed you can try searching on our website
e/jsp/zone.jsp> NI Developer Zone for example programs. There are a lot of examples online that you can modify to fit your specific needs. If you�re not interested in programming we also have an
Alliance program where we can refer you to someone who can write a custom application for you.
If you have more questions please post back with more specifics on the hardware you�re using, how you�re communicating with it and the basic structure of your application.
I hope this helps!
Sarah Miracle
National Instruments
