Position of sensors in PC case of the Kaze server 5.25

[BEF]

Hi,
Could you please explain me where exactly to position, to set, the sensors in my PC case. I don't know if I had to stick it directly on the hard drive, on the rad of my video card, on the ram memory.
There is no "detail" precisions on this topic in the user guide. (Moreover it's not possible to download the user guide on you website, it is not available.)
My PC case is the coolermaster atcs840 with about 10 fan.
My motherboard asus P6T deluxe v2 controls 4 spans.
Thanks a lot for your advices
Bye
BEF