EA20-EN V1.8 3/14
4
Manual
Datalogging
Clearing
The
Memory
1.
Press
the
button
to
power
off
the
meter.
2.
Press
and
hold
down
the
MEM
key,
then
press
the
key
to
power
on
the
meter.
The
display
will
show
“CLr”
indicating
that
the
memory
has
been
erased.
Entering
A
Reading
1.
Press
the
MEM
key
to
enter
a
reading.
The
display
will
momentarily
show
an
“M”
and
the
memory
location
number
from
1
to
99.
2.
When
the
memory
is
full,
the
display
will
show
“FULL”
.
Data
Recall
1.
Press
the
“READ”
key
to
enter
the
READ
mode.
The
LCD
will
show
an
“R”
and
the
memory
address
number.
2.
Press
the
“
”
keys
to
scroll
through
the
memory
locations.
3.
Press
“DEW”
or
“WET”
to
view
the
stored
Dew
Point
or
Wet
Bulb
temperature.
4.
Press
the
“READ”
key
to
exit
this
mode.
Relative
mode
Measurements
can
be
displayed
as
a
difference
between
actual
humidity/temperature
and
stored
reference
values.
To
store
a
humidity/temperature
reading
group
as
a
reference,
press
the
REL
button
when
the
desired
reference
readings
are
on
the
LCD
(the
triangle
icon
will
appear
steady
in
the
upper
left
‐
hand
corner
of
the
LCD).
All
subsequent
displayed
readings
will
be
“relative”
to
the
stored
reference
value.
For
example,
if
the
reference
values
are
50.0%
&
100°F
and
the
actual
readings
are
53.0%
&
105°F,
the
meter
will
display
3.0%
&
5°F.
To
exit
the
Relative
mode,
press
and
hold
the
REL
button
until
the
triangle
icon
disappears.
Automatic
Power
OFF
The
meter
automatically
shuts
off
after
a
programmed
period
of
time.
To
program
the
time
period
press
and
hold
the
TIME
button
while
turning
the
meter
on.
Release
the
TIME
button
after
the
meter
finishes
its
self
‐
test.
Press
the
TIME
button
to
scroll
through
the
eight
time
selections
(shown
on
the
smaller
digits
at
the
center
of
the
LCD).
Select
from
the
following
list:
0
(disabled),
1,
3,
5,
10,
15,
30,
or
59
minutes.
Press
the
H
button
to
store
the
desired
time.