MA140
‐
en
‐
GB_V1.0
1/15
2
Introduction
Thank
you
for
selecting
the
Extech
MA140
300A
AC
True
RMS
Mini
Clamp
Meter
with
Non
‐
Contact
Voltage
Detector.
The
MA140
is
small
in
size
but
rugged
in
performance.
The
MA140
measures
AC
current
to
300A
and
offers
a
Smart
Data
Hold
feature,
display
Backlight,
In
‐
rush
Current
mode,
Low
Pass
Filtering
(LPF),
and
a
non
‐
contact
Volt
‐
Detection
feature
that
senses
electrical
sources
safely.
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,
Product
Registration,
and
Customer
Support.
Safety
Information
–
Please
Read
First
To
ensure
the
safe
operation
and
service
of
the
meter,
follow
these
instructions
closely.
Failure
to
observe
warnings
can
result
in
severe
injury.
WARNINGS
WARNINGS
identify
hazardous
conditions
and
actions
that
could
cause
BODILY
HARM
or
DEATH.
Individual
protective
equipment
should
be
used
if
HAZARDOUS
LIVE
parts
in
the
installation
where
measurements
are
to
be
carried
out
could
be
accessible.
If
the
equipment
is
used
in
a
manner
not
specified
by
the
manufacturer,
the
protection
provided
by
the
equipment
may
be
impaired.
To
reduce
the
risk
of
fire
or
electric
shock,
do
not
expose
this
product
to
rain
or
moisture.
Verify
the
meter
operation
by
measuring
a
known
voltage.
If
in
doubt,
have
the
meter
serviced.
Do
not
apply
more
than
the
rated
voltage
as
marked
on
the
meter.
To
avoid
false
readings
that
can
lead
to
electric
shock
and
injury,
replace
battery
as
soon
as
the
low
battery
indicator
appears.
Do
not
use
the
meter
in
or
around
explosive
gas
or
vapor.
Please
keep
fingers
and
hands
behind
the
finger
guards.
Do
not
expose
meter
to
extremes
in
temperature
or
high
humidity.
De
‐
energize
the
installation
under
test
or
wear
suitable
protective
clothing
when
placing
or
removing
the
current
clamp
from
a
test
setup.
Do
not
apply/remove
the
current
clamp
to/from
UNINSULATED
HAZARDOUS
LIVE
conductors
which
may
cause
electric
shock,
electric
burn,
or
arc
flash.
www.
.com
1.800.561.8187
