Hi Team TechNet! Hey, I am looking for a reflow oven oxygen sensor that is "stand alone" and that I use to monitor/verify reflow oven oxygen levels (yes, we use a nitrogen blanket in our ovens on a number of applications) on multiple ovens. Ideally something along the lines of a hand held unit. If anyone has any suggestions of such a system they like, please send them to me. TIA Dave Hillman Rockwell Collins [log in to unmask]