[omh]

Seconding the recommendation. I have this meter for the same reason.

You need to use the Bayer software to talk to it (I'd recommend actually installing the software rather than using the copy from the meter itself). But then the readings are stored in a standard sqlite database without any obfuscation etc. It uses some sort of hash so you can't actually modify things, but for just getting the raw numbers I didn't have any trouble.