Tenma 72-2985, Руководство пользователя, Страница: 9 / 10

9
CIRCUIT ON-OFF DIODE MEASUREMENT
Range Resolution Remarks
0.1Ω
Resistance value for circuit disconnect:
>150Ω, buzzer makes no sound.
1mV
Open circuit voltage is 3.2V: normal
voltage for silicon PN junction is
0.5~0.8V.
• Overload protection:
600V rms
CAPACITANCE MEASUREMENT
Range Resolution Accuracy
2nF 1pF ± (4.0% + 10)
20.00nF~200.0µF 10pF~100nF ± (4.0% + 5)
2.000mF~20.00mF 1µF~10µF ± 10%
• Overload protection: 600V rms
• ≤1µF measured capacitance.
It is suggested to use ZERO
measurement mode to ensure
accuracy.
DC CURRENT MEASUREMENT
Range Resolution Accuracy
2.000A 1mA ± (2.0% + 8)
20.00A 10mA ± (2.0% + 3)
100.0A 100mA ± (2.0% + 3)
• Overload protection: 100A.
• Accuracy warranty coverage: 5~100%
range, 2A open circuit allows <20 residue
readings.
• Displays are rms value. Frequency
response: 50~60Hz.
• Non-sinusoidal wave counts add error by
crest factor:
- When crest factor is 1~2, add 3%.
- When crest factor is 2~2.5, add 5%.
- When crest factor is 2.5~3, add 7%.
• Overload protection: 100A.
• Due to the presence of external
electromagnetic fields, press ZERO before
measurement to ensure accuracy of
measurement.
Note: If the reading does not zero after the
initial press, press it several times until the
reading is zero.
• The orientation of the meter during
measurement should be the same as when
zeroed.
AC CURRENT MEASUREMENT
Range Resolution Accuracy
2.000A 1mA
± (3.0% + 10)
VFC mode: ±
(4.0% + 10)
20.00A 10mA
± (2.5% + 8)
VFC mode: ±
(4.0% + 10)
100.0A 100mA
± (2.5% + 5)
VFC mode: ±
(4.0% + 10)