Troxler 3411-B User Manual

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The 3400 can be used easily and effectively for determining the
presence of elevated moisture levels in built-up roofing systems.
Troxler also manufacturers the Model 3216, which is specifically
designed for roof moisture measurement.
To test roofs for moisture, a grid is first established on the roof
to be surveyed. The grid can be made using a lightweight chain,
rope, etc. A spray paint dot is all that is needed to mark the
intersections. A roof plan of the structure at this point is also
handy, showing vents, walkways, drains, heat and/or air
conditioning units, etc.
Place the 3401 or 3411 in the safe carrying position with the
PWR/TIME switch moved to FAST (15 seconds). Perform a
measurement and record the moisture count (MC) values for
each grid point on the roof. Then construction a frequency
histogram that plots count rates versus frequency of occurrence.
An example is shown below.
Figure 7. Midpoint of Interval

Troxler 3411-B Specifications

General

Brand	Troxler
Model	3411-B
Category	Control Unit
Language	English