EXTECH
INSTRUMENTS
5
FM100
‐
en
‐
GB_v1.7
6/16
Relative
Humidity
Compensation
Adjustment
When
is
shown
on
the
display,
press
and
hold
the
control
button
to
enter
the
relative
humidity
compensation
adjustment
mode.
Momentarily
press
the
control
button
to
make
a
step
change
in
the
RH%
offset;
the
range
is
‐
9
to
+9
RH
%.
When
done,
press
and
hold
the
control
button
to
save
the
setting.
The
meter
will
return
to
the
normal
mode.
Warning:
While
performing
the
compensation
adjustments,
do
not
touch
the
sensor,
as
accuracy
may
be
lost
when
adjusting
the
temperature
values.
Warning:
While
performing
temperature
or
RH%
compensation
adjustments
do
not
touch
the
slotted
openings
on
the
meter
housing,
these
are
where
the
sensors
are
located.
Otherwise,
accuracy
may
be
compromised.
Change
Formaldehyde
Unit
(ppm
or
mg/m
3
)
When
is
shown
on
the
display,
press
and
hold
the
control
button
to
enter
the
unit
selection
mode.
Choose
the
units
(ppm
or
mg/m
3
)
by
momentarily
pressing
the
control
button.
Once
the
desired
units
are
chosen,
press
and
hold
the
control
button
to
save
the
setting.
The
LCD
display
will
return
to
the
normal
measurement
mode.
Beeper
Activate
or
Inactivate
Selection
When
is
shown
on
the
display,
press
and
hold
the
control
button
to
enter
the
alarm
(beeper)
setting
mode.
Momentarily
press
the
control
button
to
toggle
the
beeper
condition
ON
or
OFF.
Once
selected,
press
and
hold
the
control
button
to
save
and
return
to
the
normal
mode
of
operation.
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