Wagner Meters Rapid RH L6 User Manual
he Rapid RH® moisture testing system should be
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used on any project where moisture-sensitive oor
coverings or coatings are to be applied over concrete
slabs. Owners, general contractors, ooring contractors/
installers, and testing companies need to be sure
the tests they perform are accurate, repeatable, and
available to all who need to know the current moisture
condition of concrete slabs.
apid RH® signicantly improves your project team’s
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ability to instantly test and/or monitor the drying
progress of a concrete slab without adding substantial
cost to the project. The Rapid RH® enables you to take
fast, accurate periodic readings that fully comply with
industry standards. The Rapid RH® Smart Sensors are
factory-calibrated and use CMOSens® technology to
ensure the sensor’s accuracy and fast equilibration.
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Step 1: Drill the Hole
Step 2: Clean the Hole
Correct hole depth and hole diameter are
important in complying with the ASTM F2170
standard. For easy installation of a Rapid
RH® L6 Smart Sensor, a uniformly round hole
is also important. Drill a hole in the concrete
slab to the required depth using a rotary
hammer drill and a ¾”-diameter masonry drill
bit. Per the ASTM F2170 standard, drill the
hole to a depth equaling 40% of the slab’s
thickness for slabs that are drying from one
side, or 20% depth for a slab drying from two
sides. For proper Rapid RH® L6 installation,
be sure to position the drill perpendicular
(90˚) to the surface being tested.
TIP: If you do not have a depth gauge for
your drill, mark or tape-off your drill bit to the
correct depth setting.
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Attach the vacuum attachment to the straight extension of a shop vacuum cleaner hose* and
thoroughly vacuum up the dust in and around the hole.
Next, insert the wire bristle brush into the hole. Turn the brush several times to loosen
pulverized concrete from the walls of the hole. Vacuum again. Repeat this step twice to ensure
no loose concrete particles remain in the hole.
IMPORTANT: Correct Diameter and Hole Uniformity: Use the ¾”-diameter section of the
insertion tool as a diameter and uniformity gauge to ensure a correct and uniformly round hole. If
the ¾”-diameter section of the tool will not go easily into the hole, the drill bit may be out-of-spec
(worn out, etc.) or the hole may not have a uniform diameter from top to bottom. Not performing
this step may cause damage to the L6 Smart Sensor when attempting insertion.
*The vacuum attachment may require an adapter depending on vacuum model.
Vacuum Brush Clean 3/4” Diameter SectionDrill
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