How to predict time series high-frequency data?

Hi All,
I am having very high-frequency data, captured  between 3 to 7 seconds by
sensor for tank. Number of rows of data point are 7 million and its
multivariate  problem.

Due to high frequency data, time series is unable to capture frequency &
Cycle of data.

Please help me, how to approach and which kinds of algorithm required to
solve this problem using R.

Thanks,
Rama Shankar