HOBO
External
Temp/RH
Data
Logger
(UX100
‐
023A)
Manual
1
‐
800
‐
LOGGERS
5
www.onsetcomp.com
on
the
LCD
screen.
Note
that
the
alarm
limits
are
only
checked
when
the
logger’s
LCD
screen
refreshes
every
15
seconds.
The
actual
values
for
the
high
and
low
alarm
limits
are
set
to
the
closest
value
supported
by
the
logger.
For
example,
the
closest
value
to
85°F
that
the
UX100
series
logger
can
record
is
84.990°F
and
the
closest
value
to
32°F
is
32.043°F.
In
addition,
alarms
can
trip
or
clear
when
the
sensor
reading
is
within
the
logger
specifications
of
0.02°C
resolution.
This
means
the
value
that
triggers
the
alarm
may
differ
slightly
than
the
value
entered.
For
example,
if
the
High
Alarm
is
set
to
75.999°F,
the
alarm
can
trip
when
the
sensor
reading
is
75.994°F
(which
is
within
the
0.02°C
resolution).
When
you
read
out
the
logger,
high
and
low
alarm
levels
will
be
displayed
on
the
plot
along
with
“Chan
<#>
Alarm
Tripped”
and
“Chan
<#>
Alarm
Cleared”
events
showing
when
the
sensor
alarm
tripped
and
cleared.
The
“Chan
<#>
Alarm
Cleared”
event
contains
the
value
that
was
furthest
out
of
range
for
the
sensor
before
the
alarm
cleared
(see
the
Points
table
for
the
actual
value).
Burst
Logging
Burst
logging
is
a
logging
mode
that
allows
you
to
set
up
more
frequent
logging
when
a
specified
condition
is
met.
For
example,
let’s
say
the
logger
is
recording
data
at
a
5
‐
minute
logging
interval
and
burst
logging
is
configured
to
log
every
10
seconds
when
the
temperature
goes
above
85°F
(the
high
limit)
or
falls
below
32°F
(the
low
limit).
This
means
the
logger
will
record
data
every
5
minutes
as
long
as
the
temperature
remains
between
85°F
and
32°F.
Once
the
temperature
reaches
90°F,
for
example,
the
logger
will
switch
to
the
faster
logging
rate
and
record
data
every
10
seconds
until
the
temperature
falls
back
below
the
high
limit
(or
85°F
in
this
case).
At
that
time,
logging
then
resumes
every
5
minutes
at
the
normal
logging
interval.
Similarly,
if
the
temperature
falls
to
30°F,
for
example,
then
the
logger
would
switch
to
burst
logging
mode
again
and
record
data
every
10
seconds.
Once
the
temperature
rises
back
to
32°F,
the
logger
will
then
return
to
normal
mode,
logging
every
5
minutes.
To
set
up
burst
logging:
1.
Select
Burst
for
Logging
Mode
in
the
Launch
Logger
window.
If
Burst
has
already
been
configured
for
this
logger,
click
the
Edit
button
in
the
Launch
Logger
window.
Note
that
you
cannot
set
up
alarms
with
burst
logging.
You
also
cannot
select
the
Stop
Logging
option
“Never
(wrap
when
full)””
if
burst
logging
is
configured.
2.
In
the
Burst
Logging
window,
select
a
sensor.
In
the
example
at
right,
the
temperature
sensor
was
selected.
3.
Select
the
High
Limit
checkbox
if
you
want
to
set
up
a
condition
in
which
burst
logging
will
occur
when
the
sensor
reading
rises
above
the
high
limit
value.
Type
in
the
value
or
drag
the
red
upper
slider
(see
example
below).
4.
Select
the
Low
Limit
checkbox
if
you
want
to
set
up
a
condition
in
which
burst
logging
will
occur
when
the
sensor
reading
falls
below
the
low
limit
value.
Type
in
the
value
or
drag
the
blue
lower
slider.
5.
Repeat
steps
2
through
4
for
the
other
sensor,
if
desired.
6.
Set
the
burst
logging
interval,
which
must
be
less
than
the
logging
interval.
Select
either
a
preset
burst
logging
interval
or
select
Custom
and
enter
your
own
interval.
Keep
in
mind
that
the
more
frequent
the
burst
logging
rate,
the
greater
the
impact
on
battery
life
and
the
shorter
the
logging
duration.
7.
Click
OK
when
done.
This
will
return
you
to
the
Launch
Logger
window.
Click
the
Edit
button
next
to
Logging
Mode
in
the
Launch
Logger
window
to
make
additional
changes.
Notes:
Once
the
logger
is
launched,
the
high
and
low
burst
logging
limits
are
only
checked
when
the
logger’s
LCD
screen
refreshes
once
every
15
seconds.
Therefore,
if
you
set
the
logging
interval
to
less
than
15
seconds
and
the
sensor
reading
falls
outside
the
limits,
the
burst
logging
will
not
begin
until
the
next
15
‐
second
refresh
cycle.
If
high
and/or
low
limits
have
been
configured
for
more
than
one
sensor,
then
burst
logging
will
begin
when
any
high
or
low
condition
goes
out
of
range.
Burst
logging
will
not
end
until
all
conditions
on
all
sensors
are
back
within
normal
range.
The
actual
values
for
the
burst
logging
limits
are
set
to
the
closest
value
supported
by
the
logger.
For
example,
the
closest
value
to
85°F
that
the
logger
can
record
is
84.990°F
and
the
closest
value
to
32°F
is
32.043°F.
Burst
logging
mode
can
begin
or
end
when
the
sensor
reading
is
within
the
logger
specifications
of
0.02°C
resolution.
This
means
the
value
that
triggers
burst
logging
may
differ
slightly
than
the
value
entered.
For
example,
if
the
high
limit
for
a
temperature
alarm
is
set
to
75.999°F,
burst
logging
can
start
when
the
sensor
reading
is
75.994°F
(which
is
within
the
0.02°C
resolution).
Once
the
high
or
low
condition
clears,
the
logging
interval
time
will
be
calculated
using
the
last
recorded
data
point
in
burst
logging
mode,
not
the
last
data
point
recorded
in
“normal
mode.”
For
example,
let’s
assume