How do i generate any signal for very small frequency

Hi,
I want to generate a sinusoidal waveform at f=0.01 Hz, which is a quasi-steady regime in pipe flow and is very important to generate such a small frequency-flow for me. However, when I enter the value of 0.01 to the related frequency blank and run the program, it always fails and give the same error which can be seen in the attachment "f=0.01.jpeg". When I go through the place where the error generates, I can not see any problem???
My other problem is that:    For frequency range between f=0.05 Hz and f=0.1 Hz, I can generate the waveform, but the vi always detect the same frequency as 0.1 Hz. For all entering frequency values of 0.05, 0.06, 0.07 Hz,the program detects the same frequency of 0.1 Hz. But, after f=0.1 Hz, the program detect the correct frequency which is entered. i.e.,if I enter 1 Hz, the program detect 1 Hz after executation of the program or for f=10 Hz, it can detect the same frequency of 10 Hz.
Could you please help me for my two problems?
Attachments:
Unsteady Pipe Flow AnalysisDEMO.zip ‏50 KB
f=0.01.jpg ‏346 KB
f=0.05.jpg ‏278 KB

Hi Kyle A.,
How can I eliminate the small vibration/perturbation on the sinusoidal signal as shown in the jpg file that I now attached? Could you please help me? I think it is due to electrical noise (power line noise of 60 Hz). Thank you again.
Attachments:
perturbation.jpg ‏308 KB
Unsteady Pipe Flow AnalysisDEMO.vi ‏104 KB

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