CPR Thermal Imaging & Moisture Meters 3

Question 1

A pin-type moisture meter uses which principle to measure moisture content?

Accepted Answer

Electrical resistance between two probes

Answer

Pin-type meters measure the electrical resistance between two probes — water conducts electricity, so higher moisture content lowers resistance and raises the meter reading.

Question 2

Which moisture meter type is BEST suited for quickly scanning large areas of hardwood flooring without surface damage?

Accepted Answer

Pinless (non-invasive) capacitance meter

Answer

Pinless capacitance meters scan large areas quickly and non-destructively by measuring changes in the electromagnetic field caused by moisture below the surface.

Question 3

What is the generally accepted equilibrium moisture content (EMC) range for kiln-dried hardwood flooring to be considered dry in the US?

Accepted Answer

6–9%

Answer

In the US, kiln-dried hardwood flooring typically has an EMC of 6–9%, and readings within this range are considered acceptable for dry, stable conditions.

Question 4

A moisture meter reading of 28% on a gypsum drywall reference scale indicates:

Accepted Answer

Elevated moisture that warrants further investigation

Answer

A reading of 28% on the gypsum reference scale is significantly elevated and warrants further investigation with confirmatory tools such as a thermo-hygrometer or invasive probing.

Question 5

When measuring moisture in concrete slabs, which method is considered the MOST accurate by ASTM F2170?

Accepted Answer

In-situ relative humidity (RH) probe in a drilled hole

Answer

ASTM F2170 recognizes in-situ RH probes inserted into drilled holes at 40% slab depth as the most accurate method for assessing concrete moisture conditions.

(CPR) Certified Priority Restoration Practice Test

(CPR) Certified Priority Restoration Practice Test

CPR Thermal Imaging & Moisture Meters 3