UNI-T UT151A, Operating Manual

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2-3 Direct current
Range
Resolution
Accuracy
UT151A UT151B UT151C UT151D UT151E
(0.8%+1)
(0.8%+1) 200 µ A
2 mA
20 mA
200 mA
10 A
0.1 µ A
1 µ A
10 µ A
100 µ A
10 mA
(2.0%+5)
(1.5%+1)
Overloading protection: uA, mA input: 200 mA /250V Ö 5 × 20 mm
A input end: 10A/250V Ö
6
× 2
5
mm
Maximum input current: 10A (For current over 5A, measuring time shall not exceed 15
seconds)
Measured voltage drop: 200mV for full range
2-4. Alternating current
Range
Resolution
Accuracy
UT151A UT151B UT151C UT151D UT151E
200 µ A
2 mA
20 mA
200 mA
10 A
0.1 µ A
1 µ A
10 µ A
100 µ A
10 mA
(3.0%+5)
(1.8%+3)
(1.0%+3)
(1.0%+3)
(1.0%+3)
Overloading protection: uA, mA input: 200 mA /250V Ö 5 × 20 mm
A input end: 10A/250V Ö
6
× 2
5
mm
Maximum input current: 10A (For current over 5A, measuring time shall not exceed 15
seconds)
Measured voltage drop: 200mV for full range
Display: Mean value (sine-wave effective value)
2-5. Resistance
Range
Resolution
Accuracy
UT151A UT151B UT151C UT151D UT151E
(1.2%+2)
(1.0%+2)
(1.2%+2)
200
Ù
2 k Ù
20 k
Ù
200 k
Ù
2 M Ù
20 M
Ù
200 M
Ù
0.1
Ù
1 Ù
10
Ù
100
Ù
1 k Ù
10 k
Ù
100 k
Ù
[5.0% (reading-10)+10] [5.0% (reading-10)+10]
(1.5%+2)
Open circuit voltage: 700mV (for range of 200M
Ù
, the open circuit voltage is about 2.8V).
Overloading protection: 250V for all ranges, DC or AC effective value
Notice: At 200 M
Ù
shift, the pen is short-circuited. It is normal for the display to show 10
digits. During measurement, these 10 digits shall be subtracted from the reading.
Relative humidity for measurement in 200M
Ù shift 65%
(0.8%+1)