Delmhorst Instrument TotalCheck User Manual
Page 27
Copyright
2006, Delmhorst Instrument Co.
Page 27 of 32
MEASURING RH IN CONCRETE SLABS
:
When using the hygrometer feature, TotalCheck can be used to measure the RH in a
concrete slab in accordance with the ASTM F-2170-02 Standard Test Method for
Determining Relative Humidity in Concrete Floor Slabs.
Basic Test Procedure:
Drill 5/8-inch hole in concrete to the appropriate depth and remove debris from the
holes. Insert a CS-2 concrete sleeve into the hole and plug the sleeve with the cap
that is provided with each sleeve.
Wait approximately 72 hours.
Remove protective cap from the concrete sleeve and insert the RH/T-S1 humidity
sensor into the hole. Wait approximately 15 minutes to allow the sensor to acclimate
to the RH in the hole.
Connect one end of the RH/T-C1 cable to the top of meter and the other end to the
exposed end of the sensor. Take a RH reading using the RH/TEMP mode of
TotalCheck as described on pages 10 and 15. This reading is the RH of the concrete
slab.
For a complete explanation of the ASTM F2170-02 standard, please visit
TESTING INSULATION
:
Set the meter scale
for the “REL 0-100” as described in the Create/Edit a Job
section on page 12.
To take a reading, attach a 21-
E electrode with 4” insulated contact pins to the
meter. Push the contact pins through the drywall into the insulation behind it.
Press the SELECT button and read the moisture content on the meter scale. The
meter displays the “relative” moisture level for two seconds.
To add a reading to the previously stored readings, release the SELECT button if
you are in triggered mode. If you are in continuous mode, the meter will not store a
new reading until the SELECT button is pressed and released again during the
reading cycle.
TESTING DRYWALL
Set the meter scale for
Sheetrock®
as described in the Create/Edit a Job section on
page 12.