just so you know.... This is a VERY energy intensive proccess. Using the same electricity of maybe 500 of our current solar panels or the output of a tiny nuclear reactor to do anything worthwhile with....
Filling a single 70 gallon tank of compressed atmosphere with an RTG would take a month or two if it was a 500 watt RTG. 50 watts which is the standard size? maybe a year.
Not that it will not be usefull as heck. Just want you to know what it will be likely limited to... They will probably drop one of these 3 years before manned exploration and in that time it will gather enough atmosphere to inflate several habitation domes with some to spare and have gathered maybe 40 gallons of water... Just without a nuclear reactor power source dont see these doing anything in colony time.