EXTECH
INSTRUMENTS
2
IR255
‐
en
‐
EU_V1.4
9/14
Introduction
Congratulations
on
your
purchase
of
the
IR255
IR
Thermometer.
This
thermometer
makes
non
‐
contact
(infrared)
temperature
measurements
at
the
touch
of
a
button.
The
built
‐
in
laser
pointer
increases
target
accuracy
while
the
backlit
LCD
and
handy
push
‐
buttons
combine
for
convenient,
ergonomic
operation.
This
device
is
shipped
fully
tested
and
calibrated
and,
with
proper
use,
will
provide
years
of
reliable
service.
Please
visit
our
website
(www.extech.com)
to
check
for
the
latest
version
of
this
User
Guide,
Product
Updates,
and
Customer
Support.
Features
Measures
non
‐
contact
surface
temperature
up
to
400°C
(752°F)
12:1
Distance
to
Spot
Ratio
(Field
of
View)
Single
‐
point
laser
targeting
Automatic
Data
Hold
when
trigger
is
released
Display
Backlight
Maximum
‐
Minimum
temperature
function
Selectable
temperature
units
(°C
/
°F)
Dynamic
battery
status
indication
Adjustable
emissivity
Audible
and
visible
alarm
indication
for
High
and
Low
Temperature
Alarm
Safety
International
Safety
Symbols
This
symbol,
adjacent
to
another
symbol
or
terminal,
indicates
the
user
must
refer
to
the
manual
for
further
information
Warnings
o
Do
not
directly
or
indirectly
point
the
laser
at
the
eyes
of
a
person
or
an
animal
o
Inspect
for
damage
or
for
any
shortage
of
parts
or
accessories
before
use
o
Replace
the
battery
immediately
after
the
battery
indicator
flashes
o
Do
not
use
the
thermometer
near
explosive
gases,
steam,
or
dust
o
Note
that
an
object
with
high
reflectivity
will
normally
cause
the
measured
temperature
value
to
read
much
lower
than
the
actual
temperature
o
Use
the
device
only
as
described
in
this
User
Guide
Cautions
To
avoid
thermometer
damage,
please
avoid
the
following
hazards:
o
EMF
from
welding
equipment
or
electro
‐
induction
heaters
o
Static
electricity
o
Thermal
shock
caused
by
large
or
abrupt
environmental
temperature
changes;
wait
30
minutes
to
allow
the
thermometer
to
stabilize
to
new
environmental
conditions
o
Do
not
use
this
device
in
excessively
high
temperature
environments