Dew Point Measurement on Transformer 1

[spdave2004]

I need to know how can I perform "Dew Point Test" on transformer with "Vaisala make DM70" dew point tester. if anyone has video link which demonstrate connection of test equipment's to transformer that will be great help.
Thanks

 

[DTR2011]

The connection is generally made via one of the blank plates, which is also used for the injection of N2. The blank plate may have already been supplied with a valve and fitting. If provisions have not been made, be sure to use a plate that will not be utilized during normal service. A bushing cover would be a good example.