HOBO U14 Data Logger User Manual
8
Temperature
Reading.
This
displays
the
current
temperature
(Fahrenheit
or
Celsius
as
selected
in
HOBOware)
on
the
LCD.
Internal
sensor
has
temperature
measurement
range
of
‐
20°C
to
+50°C
(
‐
4°F
to
+122°F).
Notes:
There
may
be
slight
variations
between
the
displayed
temperature
value
and
the
logged
value
due
to
limits
in
display
conversions.
The
values
seen
in
HOBOware
and
the
U
‐
Shuttle
are
the
actual
recorded
values
and
the
most
accurate.
The
displayed
temperature
on
the
LCD
screen
may
be
±0.3°C
(±0.6°F)
different
than
the
logged
value.
Fahrenheit
values
of
200°
and
higher
are
displayed
as
three
digits
without
a
decimal
(e.g.,
205°F);
however,
the
full
resolution
value
will
be
recorded
in
the
logger
memory
(e.g.,
205.4).
Relative
Humidity
(RH)
Reading.
This
displays
the
current
RH
on
the
LCD.
The
internal
sensor
has
a
measurement
range
of
0%
to
100%.
Alarm
Icon.
This
displays
alerts
as
configured
within
HOBOware.
Specifically,
ALERT
indicator
signals
when
temperature
or
relative
humidity
limits
have
been
exceeded.
ALERT
DELAYED
if
you
have
delay
enabled
and
an
alarm
is
tripped.
Triangle
with
exclamation
mark
immediately
after
delay
(if
enabled)
indicates
that
the
relay
is
in
an
alarm
state.
Battery
Level.
Remaining
battery
level
is
indicated
by
a
five
‐
segment
bar.
The
number
of
segments
decreases
as
battery
level
decreases.
Batteries
should
be
replaced
when
the
BATT
LEVEL
bar
graph
is
down
to
one
segment,
which
indicates
20%
battery
life
or
less.
Remaining
Memory.
Remaining
memory
is
indicated
by
a
five
‐
segment
bar.
The
number
of
segments
decreases
as
remaining
memory
decreases.
NOTE
:
If
the
memory
is
full,
the
logger
will
no
longer
log.
The
logger
will
continue
to
monitor
conditions
however,
and
will
trigger
an
alert
if
the
reading
falls
outside
of
the
configured
range.
You
must
readout
the
logger
and
then
relaunch
it
using
HOBOware
to
resume
logging.
LCD Indicators
Alarms
If
the
temperature
or
RH
measured
by
the
logger
falls
outside
the
selected
high
or
low
limit,
the
word
‘Alert,’
an
alert
symbol,
and
the
temperature
or
RH
measurement
that
went
out
of
limits
will
flash.
If
you
set
the
number
of
samples
to
greater
than
1
and
the
measured
value
is
outside
the
limits,
ALERT
DELAYED
will
flash
until
either
the
number
of
samples
is
reached
(
ALERT
with
a
triangle
symbol
is
displayed)
or
the
alert
condition
no
longer
exists.
Battery Level
BATT
LEVEL
bar
graph
down
to
one
segment
indicates
20%
battery
life
or
less.
Batteries
should
be
replaced.
Condensation (
100%
RH)
100%
RH
is
displayed
if
a
temperature/RH
sensor
is
connected
and
is
covered
with
condensation.
The
sensor
will
not
provide
accurate
readings
until
it
has
dried
out.
Unread Data
If
the
logger
has
been
stopped,
either
manually
or
because
the
memory
is
full,
the
MEM
LEFT
hash
marks
will
blink
indicating
there
is
unread
data.
Memory
Remaining
memory
is
indicated
by
a
five
‐
segment
bar.
Segments
decrease
as
remaining
memory
decreases.
The
MEM
LEFT
bar
graph
will
decrease
as
the
memory
is
filled.
When
the
memory
has
been
completely
filled,
the
MEM
LEFT
display
will
flash
and
all
segments
will
be
off.
The
HOBO
U14
will
continue
to
monitor
conditions
however,
and
will
trigger
an
alert
if
the
reading
falls
outside
of
the
configured
range.
You
must
readout
the
logger
and
then
relaunch
it
using
HOBOware
to
resume
logging.