AN340-EU-EN V1.3 4/13
2
Introduction
Thank
you
for
selecting
the
Extech
AN340
CMM/CFM
Anemometer
Psychrometer
Datalogger.
This
instrument
measures
Air
Velocity,
Air
Flow
(volume),
Air
Temperature,
Relative
Humidity,
Wet
Bulb
Temperature,
and
Dew
Point
Temperature.
The
meter’s
compact
mini
impeller
is
perfect
for
duct
airflow
measurements.
The
sensor
probe
has
an
18mm
(0.7”)
diameter
and
a
1M
(39”)
telescoping
probe
wand
with
a
marked
scale.
Duct
temperature
does
not
affect
the
airflow
measurement
results.
Temperature
and
humidity
sensors
are
built
into
the
vane
sensor.
The
user
can
manually
store
and
recall
99
readings
directly
on
the
meter’s
LCD.
The
user
can
also
automatically
log
up
to
12,000
readings
with
date
and
time
stamp
and
selectable
sampling
rate.
Readings
are
transferred
to
a
PC
using
the
supplied
PC
software
and
USB
connector
cable.
This
meter
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.
CAUTIONS
Improper
use
of
this
meter
can
cause
damage
to
the
meter
and
personal
injury.
Read
and
understand
this
user
manual
before
operating
the
meter.
Inspect
the
condition
of
the
probe
and
the
meter
for
any
damage
before
operating
the
meter.
Repair
or
replace
damage
before
use.
If
the
equipment
is
used
in
a
manner
not
specified
by
the
manufacturer,
the
protection
provided
by
the
equipment
may
be
impaired.
This
device
should
not
be
made
available
to
children.
It
contains
hazardous
objects
as
well
as
small
parts
that
can
be
accidentally
swallowed.
The
meter’s
batteries
and
packing
materials
can
also
be
dangerous
to
children.
In
the
event
that
the
meter
is
to
be
unused
for
an
extended
period
of
time,
remove
the
batteries
to
protect
against
battery
leakage.
Expired
or
damaged
batteries
can
be
hazardous
if
allowed
to
come
in
contact
with
skin.
Use
suitable
hand
protection
in
such
cases.
Do
not
short
circuit
batteries
or
put
batteries
in
fire.
Shop for Data Logging products online at:
www.
DataLoggerStore
.com
1.877.766.5412
