Delmhorst Instrument BD-10 - Manual (Page 12)

Side walls and roof insulation pick up moisture because
of leaks in the roof or structural defects in the side walls
which allow storm water to be forced in during high wind.
During periods of cold weather, vapor will condense as it
approaches the colder area near the outside walls, and
resulting moisture will remain trapped in the insulation.
Cork, wood fiber boards, and other cellulose material read
lower than glass wool and other inorganic types of insulation.
CARE OF YOUR METER
To keep your meter in good working order:
hStore your meter in a clean, dry place. The protective
carrying case provided is an ideal storage place when the
meter is not in use.
hChange the 9-Volt battery as needed. Continued use with a
low battery may cause the meter to go out of calibration.
hChange contact pins
%
as needed. Keep pin retainers
hand tightened.
hClean the meter and contact pins with any biodegradable
cleaner. Use the cleaner sparingly and on external parts
only. Keep cleaner out of the external connector
^
.
hRemove the battery if the meter will not be used for one
month or longer.
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