I'm looking for an RH meter for monitoring of a component drybox. Our target is to maintain 0-1% RH. I've looked at many different units and none of them have the required accuracy. +/-2% is the best I've been able to find with units capable of measuring in the 0-5% range.
For those of you that are using dried compressed air or N2, what type of monitoring are you doing and what type of equipment is used?