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Summary of Contents for Wagner Meters Rapid RH 4.0 EX
- Page 2 he Rapid RH ® moisture testing system should be used on any project where moisture-sensitive floor coverings or coatings are to be applied over concrete slabs. Owners, General Contractors, Flooring 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.
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Page 3: Step 1: Drill The Hole
Step 1: Drill the Hole Correct hole-depth is important in complying with the ASTM F2170 standard. Drill a hole in the concrete slab to the required depth using a rotary-hammer drill and a ¾” (19mm)-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 ®... - Page 4 Step 2: Clean the Hole 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.
- Page 5 Step 3: Insert the Smart Sensor NOTE: The newest ASTM F2170 standard (F2170-11) has a revision (from the previous -09 version) calling for the ‘sleeve’ (liner) to go from the top to the bottom of the hole. The new Rapid RH ®...
- Page 6 In summary, you add one extension insert to a Smart Sensor barrel for every 1” increase in slab thickness over 4” to meet the 40% depth requirement. The extension inserts make the Smart Sensor’s usage flexible for varying thicknesses of concrete. Now, take the Smart Sensor directly out of the package.
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Page 7: Step 4: Take Readings
Step 4: Take Readings When ready to take readings, remove the orange protective Easy Reader cap from the Smart Sensor, and ensure no dust or debris are inserted into a ® inside. Insert the Rapid RH 4.0 Easy Reader firmly until it Smart Sensor comes fully into contact with the bottom of the Smart Sensor. - Page 8 After the initial equilibration has been reached per ASTM F2170 requirements, subsequent readings can be taken instantly. If future testing is needed, replace the protective cap by snapping it back into the Smart Sensor. Record readings on the enclosed report form in the spaces provided for information required by ASTM F2170, including the date, time, %RH and temperature.
- Page 9 Step 5: Encapsulate Smart Sensor If future readings are no Place metal disk over Smart Apply cementitious longer needed (for example, Sensor before encapsulating patching compound when ready to apply a floor covering or coating), place the stainless steel metal disk over the Smart Sensor and skim-coat the hole with cementitious...
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Page 10: Troubleshooting
Trouble Shooting Display shows “ER”: The Rapid RH 4.0 Easy Reader may not be properly communicating ® with the Smart Sensor for the following reasons: (1) The Easy Reader was not in contact with the Smart Sensor long enough. Hold the Easy Reader in the Smart Sensor until the first relative humidity reading appears on the screen, then remove. - Page 11 ASTM F2170 Best Practices New concrete slabs should be allowed to cure and dry as long as possible before performing any type of moisture testing. Even though some methods state to wait at least 28 days after a concrete pour before setting up test instruments, it is often prudent to wait much longer*.
- Page 12 elapsed between initially setting up test locations and obtaining the final results per testing standards, then it is good practice to set a few new tests to confirm and validate what the older test locations are currently indicating. Additionally, it is good practice to let the sensors lay on the slab for about 10 minutes or so prior to installation, until they reach temperature equilibrium with the slab to prevent any dew point issues that might cause condensation on or around the sensor (NOTE: Wagner has not heard of any reports where this has actually been an issue, but it is...
- Page 13 Wagner Meters shall in no event be liable for any breach of warranty or defect in this product, which exceeds the amount of purchase price of the product.
- Page 14 The Moisture Measurement Leader Wagner Meters 326 Pine Grove Road Rogue River, OR 97537 (800) 634-9961 The RAPID RH ® 4.0 EX is registered under U.S. Patent 7231815 & 8047056 Additional Patents Pending ©Wagner Electronic Products, Inc. 2012 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher.