This is the link to the catalyst probe monitor, analog and digital
http://www.condar.com/cat_meters_woodstoves.html
http://www.condar.com/digital_monitor_woodstoves.html
Still have questions regarding your chimney:
1) How tall is the chimney?
2) Is the Chimney interior to the house or on an exterior wall?
3) Is the Chimney insulated?
You definitely want all your wood for the winter cut split and stacked ASAP. A pile on the ground is bad news...it just collects moisture and honestly would take years to season out that way except for the stuff on the top. I wouldn't even cover it until the winter, but winter coverage is most important to keep snow and ice pack off it.
I keep my stacks uncovered and then in September/October cover then with a tarp, but you don't want the tarp to overhang the edges more than a foot or so.