What does equilibration mean when talking about moisture testing?

Equilibration, or when moisture readings stabilize and stop changing, occurs when a drilled hole achieves thermal and moisture equilibrium. For the accuracy of the readings, it is necessary to wait until equilibrium is restored after drilling. In most cases, the Rapid RH® 4.0 EX Smart Sensor will be within 3-5% of the final reading one hour after installation.

Follow ASTM F2170 procedures pertaining to equilibration time. Once equilibration is achieved, future readings can be taken instantaneously with the Rapid RH® Easy Reader or Smart Reader.