Wagner Meters RH L6 User Manual
he Rapid RH® moisture testing system should be used
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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 ability
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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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