Recording a waveform

[Lalith]

I want to log the output of a flow meter to a file. I developed the following VI but it does not record the waveform with respect to time. Time column does not increment as I expected. It suddenly increases just after starting the logging of data. Can anybody say why is it behaviing in that way? I am posting the VI here.

Lalith

[preston_johnson]

You are doing single point reads which is not something I normally do.  Can you try continuous acquisition and see what happens?

[Lalith]

Many thanks for your comments. Yest I tried changing to continous time but still the time column behaves in a peculiar way. Most of the time it does not start from 0. It starts with a random time value and increments. I cant still understand why it does not start from zero. Your comments will be highly appreciated.

[K_Bull]

Hey Lalith,
How many channels are you using? You could use the build waveform vi to initialise the time t0 so you start from 00.00.00. The random time you see is the absolute time and it increments because you are making measurements on time domain. I modified your simple vi to get a voltage readings and in the xml file the vi generated, time started from 0.00000. Are you sure you are not getting the same start time for the log?
If you have further queries, do ask.
Best Regards,