UNI-T
UT 139A/B/C OPERATING MANUAL
6. Frequency/duty ratio measurement (only applicable for UT139B/C)
Range
Resolution
Accuracy
9.999Hz—9.999MHz
0.001 Hz-0.001 MHz
±(0.1%+4)
1% -99.9%
0.1%
Not defined
^
Over-load protection: 600V-PTC
Input range a: (DC level is zero)
^10 0kH z:1 0 0m V rm s^a ^2 0V rm s
> 1 0 0 k H z -1 M H z : 200m V rm s^a^20V rm s
>1 MHz : 500m V rm s^a^20V rm s
5MHz—10MHz : 900m V rm s^a^20V rm s
Duty ratio %: only applicable for measurement ^ 100kHz
Remark:
*. During measurement of AC voltage or AC current, if need to read online frequency value or duty ratio,
following input should be met: frequency response: ^ 1 kHz;
*. AC voltage: mV range input ^100m V ; V range input ^ range *6%
*. AC current: input range a
4000/6000|
j
A, 4007600mA, 10A range: a ^ range *6%
400/600|
j
A, 40/60mA, 4/6A range: a ^ range *60%
7. Temperature measurement (only applicable for UT139C)
Range
Resolution
Accuracy
°C
-40—1000°C
0
1
o
1
1°C
+ 3
> 0 -1 0 0 °C
±(1.0%+3)
>1 00 -10 00 °C
±(2.0%+3)
T
-40—1832°F
-40—32°F
1°F
±5
> 3 2 —212°F
± (1.5%+5)
> 2 1 2 —1832°F
± (2.5%+5)
19
UT 139A/B/C OPERATING MANUAL
UNI-T
^
Over-load protection: 600V-PTC
Remark: The point type K (Ni-Cr and Ni- Si) thermocouple is only applicable for the measurement of temperature
under 230°C/446°F
8. DC current measurement
Range
Accuracy
Resolution
UT139A
UT139B
UT139C
UT139A
UT139B/C
u A
200.0
m
A
400.0
m
A
600.0
m
A
± (0.7%+2)
± (0.7%+2)
0.1
m
A
2000
m
A
4000
m
A
6000
m
A
1
m
A
mA
20.00mA
40.00mA
60.00mA
10
m
A
200.0mA
400.0mA
600.0mA
0.1mA
A
2.000A
4.000A
6.000A
± (1.0%+3)
± (1.0%+3)
1mA
10.00A
10.00A
10.00A
10mA
Over-load protection:
u A mA range:
F1 fuse: (cp6x32)mm FF0.2A H 600V (CE) UT139A FF0.5A H 600V (CE) UT139B FF0.6A H 600V (CE) UT139C
10 A range: F2 fuse: (cp6x25)mm
F 10A H 600V (CE)
9. AC current measurement
Range
Resolution
Accuracy
UT139A
UT139B
UT139C
u A
200.0
m
A
400.0
m
A
600.0
m
A
0.1
m
A
2000
m
A
4000
m
A
6000
m
A
1
m
A
±(1.0+3)
mA
20.00mA
40.00mA
60.00mA
10
m
A
200.0mA
400.0mA
600.0mA
0.1mA
A
2.000A
4.000A
6.000A
1mA
±(1.2%+3)
10.00A
10.00A
10.00A
10mA
20
Содержание TU13BA
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