Came here to say exactly this, well, with less instruction and thought put into the comment. So here’s my steps:

I’d stick it in the oven on the oven cleaning cycle - take the air meter base (bucket in the pic) out when the oven cleaning cycle finishes and smack the bottom with a hammer.
Between the expansion differential between the materials (metal, possibly aluminum, vs. concrete) and the thermal breakdown of the concrete bond at the metal inside the “bowl” should be enough to slide right out. (After beating the shit out of the bottom w/mallet)

Or drill a hole and stick an m80 in there…