RESILIENT FLOORING
place the sensor inside, and wait for 24 hours to allow the sensor to equilibrate according to ASTM standards.
Once that’s done, you can take readings and upload them to the DataMaster L6 app on your phone for easy access, sharing, and storing.
PROS
Rapid RH L6 Sensors: • Are accurate and reliable: Their accuracy and dependability make them the gold standard for concrete moisture testing. They are compatible with ASTM F2170.
• Provide a fuller picture of the slab’s moisture condition: Can measure deep into the concrete slab to better account for the moisture gradient of the slab.
• Make it easier to make, access, and share data reports: Some package options come with a DataGrabber with Bluetooth so you can send and store your readings on the DataMaster L6 app on your phone.
• Have a low cost per sensor: It costs less than other RH testing methods.
• Has upgrade options: You can stick with a manual version or upgrade to the version with the DataGrabber with Bluetooth to share readings to your phone wirelessly or the True Remote Monitoring System to access readings from anywhere in the world.
CONS
Rapid RH L6 Sensors: • Requires drilling: You have to drill into the slab to take a reading – 40% deep if your concrete is drying on one side, and 20% if your concrete is drying from both sides. These holes are permanent, but necessary for accurate testing.
• Take longer to get readings: Though they can get accurate readings – within 3-5% of the final moisture reading – as soon as one hour, you have to wait 24 hours to take official readings according to ASTM Standards.
• Are single-use sensors: You can’t take the sensor out of the hole you placed it in and put it in another. They must remain in the spot they were originally placed in – making them single-use sensors. However, this does not mean they only take one reading. They can take multiple readings while positioned in the slab, tracking the moisture condition of the area and how it changes.
WHICH SHOULD YOU CHOOSE?
What’s the better tool? Both the C555 concrete moisture meter and the Rapid RH sensors do their respective jobs well, so your choice primarily depends on your moisture testing situation.
Surface testing (with meters like the C555) is a good option when: • You’re working on a pre-bid, and you want to know how much an installation will cost and how much trouble it will be.
• You want to find moisture hotspots. • You want to monitor ambient temperature. • You’re working with a variety of building materials. • You can’t drill into the concrete. • Your floorcovering manufacturer doesn’t require you to perform RH testing.
• You know you’re not going to attempt other forms of moisture testing; surface testing is far better than no testing at all – at least you’ll have a moderate understanding of your subfloor’s moisture condition.
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Te C555 Concrete Moisture Meter is good at finding moisture hotspots in the concrete subfloor.
Relative humidity testing (with sensors like our Rapid RH L6) is ideal when: • You want a better picture of your subfloor’s moisture condition. •
It is required by local industry standards.
• You want to track, store, and share moisture readings. • You want traceable data records in case clients question your work.
But who says you have to choose just one? Really, the best way to use the Rapid RH L6 and the C555 is to use them together. Since the C555 finds moisture hotspots, this can help you narrow down which areas need further moisture inspection.
So instead of stopping at surface testing, or placing your RH sensors at random, use the C555 moisture meter to help locate the optimal locations for placing your Rapid RH L6 sensors. Then you can be confident that you’re working with the most relevant and reliable moisture data.
https://www.wagnermeters.com/concrete-moisture-test/concrete-info/
Visit our Concrete Information & Knowledge Base to learn more about concrete moisture testing best practices and tools.
www.WagnerMeters.com. 23
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