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Micronta 22-195A - RESISTANCE MEASUREMENT SAFETY; Over-voltage Protection; Internal Lead Resistance

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2.
Your
unit
has
a
circuit
which
protects
the
resistance
ranges
from
over-voltage
(500V
AC
for
1
minute).
To
prevent
accidentally
ex-
ceeding
the
rating
of
the
protection
circuit
and
to
ensure
correct
measurements,
never
connect
the
probes
to
a
source
of
voltage
when
one
of
the
KQ/
++
diode
check/CON-
Tinuity
function
switches
is
pressed
in.
3.
When
you
short
the
test
leads,
the
range
will
move
to
the
300
ohm
scale
and
a
small
value
(less
than
0.5
ohms)
will
be
displayed.
This
value
represents
the
internal
resistance
of
the
meter's
circuitry
and
the
test
leads.
You
may
need
to
note
this
value
and
deduct
it
from
the
measured
value
when
you
are
measuring
a
very
small
resistance.
21

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