A. DC voltage
Range
Resolution
Accuracy
Overload protection
UT39A UT39B UT39C
200mV
100µV
±(0.5%+1)
250V DC or AC rms
2V
1mV
1000V DC
or 750V AC
20V
10mV
200V
100mV
1000V
1V
±(0.8%+2)
Remark:
• Input impedance: 10MΩ.
B. AC voltage
Range
Resolution
Accuracy
Overload protection
UT39A UT39B UT39C
2V
1mV
±(0.8%+3)
1000V DC
or 750V AC
20V
10mV
200V
100mV
750V
1V
±(1.2%+3)
Remark:
• Input impedance: 10MΩ.
• Frequency response: 40Hz ~ 400Hz.
• Display effective value of sine wave (mean value response).
C. DC current
Range
Resolution
Accuracy
Overload protection
UT39A UT39B UT39C
20µA
0.01µA
±(2%+5)
0.315A. 250V
fast type fuse,
ø5x20mm
200µA
0.1µA
±(0.8%+3)
2mA
1µA
±(0.8%+1)
±(0.8%+1)
20mA
10µA
200mA
100µA
±(1.5%+1)
10A/20A
10mA
±(2%+5)
Un-fused
Remark:
• UT39A/UT39B-At 10A range: For continuous measurement ≤10 seconds and interval not less than 15
minutes.
• UT39C-At 20A range: For continuous measurement ≤10 seconds and interval not less than 15 minutes.
• Measurement voltage drop: Full range at 200mV.
Illustrations