EA20-EN V1.8 3/14
3
Operation
NOTE:
Do
not
immerse
the
probe
in
liquid;
it
is
intended
for
use
in
air
only.
Turn
Power
ON
or
OFF
Press
the
button
to
turn
power
on
or
off.
The
meter
will
perform
a
short
self
‐
test
when
turned
on.
Taking
measurements
1.
Hold
the
probe
in
the
area
to
be
tested.
2.
Allow
adequate
time
for
readings
to
stabilize.
3.
Read
the
humidity
and
temperature
on
the
LCD.
The
%RH/TEMP
button
allows
the
user
to
choose
whether
the
temperature
or
the
humidity
is
displayed
on
the
larger
digits.
Press
the
%RH/TEMP
button
to
toggle
the
display
configuration.
Selecting
temperature
units
of
measure
(C/F)
Press
the
o
C/
o
F
button
momentarily
to
toggle
the
temperature
units.
Maximum
(MX)
and
Minimum
(MN)
recording
NOTE:
The
Automatic
Power
OFF
feature
will
be
disabled
while
the
MX/MN
mode
is
selected.
The
MX/MN
mode
allows
the
user
to
view
only
the
highest
(MX)
or
lowest
(MN)
readings.
Press
the
MX/MN
button
momentarily
to
start
the
elapsed
timer
and
begin
recording.
The
display
will
now
only
show
the
highest
reading
(the
MX
icon
will
appear).
Press
the
MX/MN
button
again
to
view
the
lowest
reading
(MN
will
display).
The
TIME
button
allows
the
user
to
view
the
elapsed
time
for
a
particular
Max
or
Min
reading
in
Minutes:Seconds
(59mins:59secs
max)
or
Days:Hours
(99days:24hours
max).
To
check
the
highest
or
lowest
Dew
Point
or
Wet
Bulb
temperatures,
use
the
DEW
and
the
WET
buttons.
The
following
data
displays
are
available
in
the
MX/MN
mode:
a.
Maximum
and
Minimum
humidity
with
its
associated
temperature
reading
b.
Maximum
and
Minimum
temperature
with
its
associated
humidity
reading
c.
Maximum
and
Minimum
Dew
point
temperature
with
its
associated
standard
temperature
or
humidity
d.
Maximum
and
Minimum
Wet
Bulb
temperature
with
associated
standard
temperature
or
humidity
To
exit
the
MX/MN
mode,
press
and
hold
the
MX/MN
button
until
the
MX
and
MN
icons
disappear.
Data
Hold
Press
the
H
button
momentarily
to
freeze
the
displayed
reading.
The
'H'
icon
will
appear
on
the
upper
left
‐
hand
side
of
the
display.
Press
the
H
button
again
to
return
to
normal
operation
(the
'H'
hold
icon
will
disappear).
DEW
POINT
temperature
display
Dew
Point
temperature
is
calculated
by
the
meter
based
on
humidity/temperature
measurements.
To
view
the
Dew
Point
temperature,
press
the
DEW
button
momentarily.
The
‘DEW’
display
icon
will
appear
on
the
right
side
of
the
LCD.
The
Dew
Point
temperature
will
display
on
the
bottom
(larger)
digits.
The
upper
(smaller)
digits
will
display
the
regular
temperature
in
°C
or
°F
or
the
humidity
in
RH%
(use
the
%RH/TEMP
button
to
toggle
between
the
two).
WET
BULB
temperature
display
Wet
Bulb
temperature
is
calculated
by
the
meter
based
on
humidity/temperature
measurements.
To
view
the
Wet
Bulb
temperature,
press
the
WET
button
momentarily.
The
‘WET’
display
icon
will
appear
on
the
right
side
of
the
LCD.
The
Wet
Bulb
temperature
is
displayed
on
the
bottom
(larger)
digits.
The
upper
(smaller)
digits
will
display
the
regular
temperature
in
°
C
or
°
F
or
the
humidity
in
RH%
(use
the
%RH/TEMP
button
to
toggle
between
the
two).
