square wave sensor data to graph

[sgirgin]

Hi all

I have a flowmeter FTB-1302 and Nı USB 6229.I have connected them and read data as a square wave.How can i convert this square wave into real values.I mean i want to read flowmeter.

Here is my vi code and my squarewave graph.

Thank you

[NIquist]

You need to read the manual of your flowmeter and determine how the actual flow rate relates to the frequency of your signal.  Most sensors make it a very easy linear relationship.  Then just do the calculation and display your result in an numeric indicator.  No need for a graph unless you like looking at a square wave.  Although you might want to chart the numeric value so you have a history of the flow rate.

EDIT:  There is a VI called "Extract Single Tone Information.vi" that can read the square wave and return its frequency. 

[sgirgin]

Actually i am new in this area could you please explain me which part of the manual i sould read exactly and at what considerations i sould be careful about?And you said about calculations.What kind of calculations and how?

Thank you