Tenma 72-3545, Руководство пользователя, Страница: 10 / 14

10
MEASURING AC VOLTAGE
• Insert the black probe into the “ COM ” input and
the red probe into the “ V Ω ” input.
• Set the measuring function range of AC voltage
by rotating the dial to
V
.
• The Meter will be within the measuring function
range of AC voltage as default.
• Connect the voltage to be tested and put the red
and black probes at two sides of the voltage to be
tested. The clamp meter will automatically select
the correct range.
• The centre of the screen will display the current
true visual value of AC voltage.
• When the voltage value exceeds 30V AC, the
screen will display the high-voltage alarm signal
to warn against a shock hazard.
Note: frequency response scope: 45Hz - 400Hz.
• Warning : AC voltage measuring range must not
be greater than 750V AC.
MEASURING DC VOLTAGE
• Insert the black probe into the “ COM ” input and
insert the red probe into the “ V Ω ” input, ready for
measurement.
• Set the measuring function range by rotating the
dial to V .
• Press the SELECT button to switch the Meter
into the measuring function range of DC voltage.
• Connect the voltage to be tested and put the red
and black probes at the two sides of voltage to
be tested and the Meter will automatically select
the correct range.
• The screen will then display the current true
virtual value of DC voltage.
• If the electric potential at the red probe is higher
than that at the black probe, the screen will
display the positive voltage value, otherwise the
negative voltage will be shown.
• When the voltage exceeds 42V DC the screen
will display the high-voltage symbol to warn against shock hazard.
• Warning : DC voltage measuring range must not be greater than 1000V DC.
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