Page 20 Protimeter MMS Moisture Measurement System
A1.2.2 Sub-Surface ERH Test Procedure
(using Protimeter Humidity Sleeves)
Protimeter Humidity Sleeves are convenient optional accessories for use with
Protimeter Hygrosticks. Clearance holes are drilled at the required POMs and
the Humidity Sleeves are inserted. As each Humidity Sleeve has its own
sealing cap, it is not necessary to plug or cover the drilled holes. Having
placed the Humidity Sleeves in the floor slab (ideally, 24 hours before ERH
measurements are to be taken), remove the cap and follow the procedure
starting with step 2 in the previous section. Please refer to local standards such
as ASTM F2170 (USA) for specific requirements.
A1.2.3 Sub-Surface ERH Test Procedure
(using Protimeter Surface Humidity Box)
If it is impractical or undesirable to take sub-surface ERH readings (the best
technique for determining the actual moisture condition of the slab) the
Hygrostick can be used in combination with a Humidity Box placed on the
surface. Typically, Humidity Boxes are used on floors with embedded heating
pipes or when a contractor is working to standards, such as BS 8203:1996
(UK), that specify surface ERH techniques.
A Protimeter Humidity Box (Part No. BLD4711) is available as an optional
accessory. It should be used in accordance with applicable standard
recommendations, or it should be placed at the POM for at least 24-hours
prior to taking ERH readings.
The information contained in this manual is given in good faith. As the method of use of the
instrument (and its accessories) and the interpretation of the readings are beyond the
control of the manufacturers, they cannot accept responsibility for any loss, consequential
or otherwise, resulting from its use.
Protimeter Hygrostick
®
and Humistick
®
are registered trademarks of GE
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