2
DC400
‐
en
‐
GB_V2.0
07/15
Introduction
Thank
you
for
selecting
the
Extech
Instruments
Model
DC400
clamp
meter
that
measures
up
to
400A
DC.
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
register
the
meter
and
to
check
for
the
latest
version
of
this
User
Guide.
Features
High
Accuracy
and
Resolution
Large
4000
count
LCD
display
One
touch
“Auto
Zero”
Data
Hold
and
Auto
Power
Off
functions
30mm
(1.2”)
Jaw
diameter
Safety
International
Safety
Symbols
This
symbol,
adjacent
to
another
symbol
or
terminal,
indicates
the
user
must
refer
to
the
manual
for
further
information.
This
symbol,
adjacent
to
a
terminal,
indicates
that,
under
normal
use,
hazardous
voltages
may
be
present
Double
insulation
Safety
Notes
Do
not
exceed
the
maximum
allowable
input
range.
Set
the
function
switch
OFF
when
the
device
is
not
in
use.
Remove
the
battery
if
the
device
is
to
be
stored
for
longer
than
60
days.
Never
dispose
of
batteries
in
a
fire.
Batteries
may
explode
or
leak.
Never
mix
battery
types.
Always
install
new
batteries
of
the
same
type.
Warnings
Set
function
switch
to
the
appropriate
position
before
measuring.
Do
not
measure
current
on
a
circuit
whose
voltage
exceeds
600V.
Cautions
Improper
use
of
this
meter
can
cause
damage,
shock,
injury
or
death.
Read
and
understand
this
user
manual
before
operating
the
meter.
Inspect
the
condition
of
the
meter
for
any
damage
before
operating
the
meter.
Repair
any
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.