UNI-T UT15B PRO - Page 13

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
Xll
.
Technical
Specifications
Accuracy
:
±
(
a
%
reading
+
b number
)
;
1
year
warranty
period
Environment
temperature
:
23
°
C
±
5
°
C
(
73.4
°
F
±
9
°
F
)
;
Relative
temperature
:
<
75
%
^
Warning
:
If
the
operation
temperature
is
18
°
C
-
28
°
C
,
the
fluctuation
range
of
ambient
temperature
will
be stable
within
±
1
°
C
.
If
the
operation
temperature
is less than
18
°
C
or
exceeds
28
°
C
,
the additional
temperature
coefficient
error
is
0.1
x
(
specified
accuracy
)
/
°
C
.
2
.
AC
Voltage
Measurement
Range
Accuracy
Resolution
600
.
OmV
0.1
mV
6.000
V
0.001
V
±
(
1
%
+
3
)
60.00
V
0.01
V
600.0
V
0.1
V
1000
V
1
V
1
.
DC
Voltage
Measurement
±
(
4
%
+
10
)
frequency
response
:
40
~
400
Hz
VFC
:
600.0
V
0
.
1
V
Range Accuracy
Resolution
600
.
OmV
0.1
mV
•
Input impedance
:
about
10
MQ
•
Display
true
RMS
values
.
Frequency
response
:
40
~
500
Hz
•
Accuracy guaranteed
range
:
1
-
100
%
of
the
range
,
short circuit allows least
significant
digit
<
2
.
•
AC
peak
factor
can
reach
3.0
at
full
value
(
with
except
for
600
V
range
,
which is
1.5
at
full
value
)
Non
-
sine
waveform
:
Peak
factor
is
1.0
-
2.0
,
accuracy
should be added
3.0
%
Peak
factor
is
2.0
-
2.5
,
accuracy
should
be added
5.0
%
Peak
factor
is
2.5
-
3.0
,
accuracy
should be added
7.0
%
*
•
Maximum
input
voltage
:
1000
Vrms
,
if
the
input
voltage
is
>
1000
V
,
the
meter
alarms
;
if
it
is
>
1100
V
,
OL
symbol
will
be
displayed
on
LCD
.
6
.
000
V
0.001
V
60
.
00
V
±
(
0
.
5
%
+
3
)
0.01
V
600
.
0
V
0.1
V
1000
V
1
V
•
Input impedance
of
mV
range
is
>
3
GQ
,
while others
range
are
about
10
MQ
.
There
will
be
unstable
digital
display
in
case
of
mV
range
open
-
circuit
;
after
connecting
with
the load
,
it
can
be controlled
<
±
3
digits
.
•
Maximum
input
voltage
:
±
1000
V
;
if
the
input
voltage
is
>
1000
V
,
the
meter
alarms
;
if
it
is
>
1100
V
,
OL
symbol
will
be
displayed
on
LCD
.
24
23