How to Properly Drill a Concrete RH Probe Hole

Product Update: The Rapid RH® 4.0 shown in this video has been replaced by the Rapid RH L6.

Jason Spangler, Vice President of Sales for Wagner Meters, explains how to confirm you’ve drilled to the proper depth when installing a Rapid RH relative humidity (RH) sensor. ASTM F2170 calls for 40% of slab depth on slabs drying from one side, and 20% on slabs drying from both.

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Last updated on August 18th, 2026

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