Rapid RH probe out of calibration?

[Rubensgt40]

Thanks for that Jason. I wasn't sure whether "calibration" might include a probe...how do I put this.... "going off" like a tub of cream . I imagine if the hole is re-sealed, it is in an un-changeable environment and that's the whole point of calibration. I'll PM you about the competitor's equipment because I'm curious about that.

Correct me if I'm wrong JD, but I assumed your point was relating to the portion of slab immediately below the probe having the upward passage of RH "blocked", so to speak, and drying slightly different to the surrounding slab? is this the "edge effect" spoken of in F2420 (where they recommend taping a 3' x 3' sheet surrounding the insulated hood)? I never quite understood the "edge effect", guess I shoulda asked the question in Chicago.

Interesting point, but surely such an effect below a Rapid RH probe would be of negligible difference...