KYORITSU New SNAP 7 User Manual

4.
Set
the dial drum scale to a
desired ampere range and make sure that
the meter is
zeroed.
Press the
jaw
trigger to open the transfornrer
jaws.
When the conductor
tr: be measured is enclosed
within the
jaws,
the ampere
reading
may be
taken.
If the
pointer
is
deflected in
the
opposite direction
place
the
function
selector srvitch
in the
"-" position.
When
the
current
to be
measured is
of
an
unknown order
select
the highest
600A
range first
and then the most
appropriate
range.
Fig.
8 shows
the current flowing in the
'positive
(*)
direction and Fig.
9
in the
negative
(-)
direction.
NEGATIVE
DIRECTION
READING
5.
When
a DC current is measured, a
hysteresis effect may be introduced into the
transformer core. To
remove
this completely
it is necessary to enclose a large AC
current carrying conductor
within the
jaws.
It is also
possible
to minimize
the
hysteresis
effect
by operating the
jaw
trigger a
few trmes to open and close thc
transformer
jaws.
On the
30A
range this hysteresis effect is the
largest with
4
to
57o error in the meter
indication. A highest degree
of
accuracy
can
be
obtained when
the current being measured is a
perfect
DC currcnt.
5.
Pointer
lock is
used
to
facilitate thc mcasute-
ment
of conductors in areas
of
poor
accessi-
bility or inadequate illumination.
In such
cases, when the reading is
registering on the
scale. simply
slide the
pointer
lock button to
the
left, to lock the
pointer
in
place,
and the
instrument'may be
removed to an area
where
it may
be read easily, before
releasing the
pointer
(Fig.
l0).
I
Fig.-8
I
-Er9m.-
v'f-
F
is.-9
F ig.-
l0
(5)

KYORITSU New SNAP 7 Specifications

General

Brand	KYORITSU
Model	New SNAP 7
Category	Multimeter
Language	English