UNI-T UT15B PRO - Page 16

UT
15
B
PRO
/
UT
17
B
/
UT
18
B
PRO
User Manual UT
15
B
PRO
/
UT
17
B
/
UT
18
B
PRO
User Manual
9
.
AC Current
Measurement
10
.
LED
Measurement
(
UT
18
B
PRO
)
Range Accuracy
Resolution
LED
panel
jack
Positive indicator
light
(
green
)
600
.
OpA
0
.
1
pA
LED
test
pA
Display
positive
/
negative voltage
value
Test lead terminal
6000
pA
1
pA
±
0.0
+
3
)
60.00
mA
0
.
01
mA
•
Overload
protection
:
1000
V
-
PTC
•
OL
will
be
display
when the
input
voltage
of
test
lead terminal is
>
6.2
V
.
mA
600.0
mA
0
.
1
mA
6.000
A
0
.
001
A
±
(
1.5
%
+
3
)
A
10.00
A
0
.
01
A
XIII
.
Maintenance
WARNING
:
Before
opening
the
rear cover
,
make
sure
the
power
supply
has been turned
off
and the
test
leads have been removed
from
the
input
ports
and the measured circuit
.
Overload
protection
:
lOOOVrms
Frequency
response
:
40
~
500
Hz
Display
:
True
RMS
value
Accuracy
guarantee
:
1
-
100
%
of
the
range
,
short circuit allows least
significant
digit
<
2 .
AC
peak
factor
can
reach
to
3.0
at
full
value
1
.
General
Maintenance
•
Clean
the
meter
casing
with
a
soft
cloth and mild
detergent
.
Do
not
use
abrasives
or
solvents
!
•
If
any
abnormality
is
found
with
the
meter
,
stop
using
it
and send
it
for
repairing
.
•
If
the
meter
needs
to
be checked
or
repaired
,
please
ask
for
qualified
maintenance
personnel
or
authorized
maintenance
department
.
Non
-
sine
waveform
:
a
.
Add
3.0
%
when
crest
factor
is
1.0
-
2.0
b
.
Add
5.0
%
when
crest
factor
is
2.0
-
2.5
c
.
Add
7.0
%
when
crest
factor
is
2.5
-
3.0
30
29