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4.11. Non-Contacnt Voltage (NCV) Detect
WARNING: This function could be affected by different
external interference sources, and then the alarm is activated by
wrong slgnal. The Measurement result is for reference only.
(I) Turn the rotary function switch to "NCV" position. When
the testing circuit is placed above the meter. When the meter
sensor detects voltage, the indicator lights on and the buzzer
alarms (fig.12).
(2) There are 5 ranges for measuring of NCV: 0-50mV,
50-100mV, 100-150mV, 150-200mV, 250mV. For measuring
results of each ranges, "LO", "-", "--", "---", "----", appears on
LCD respectively.
(1) NOTE:Even if there is no voltage indication,
there may be voltage on the circuit. NCVdetector
is not the only way to detect if there is voltage.
(2) Voltage detecting maybe affected by power
socket design, type of insulation and its thickness
and other factor.
(3) When there is voltage input in the meter´s
terminal, the voltage indicator may light on because
of voltage sensor installed in the meter.
(4) Interference sources in the external environment,
such as flashing light, motor, would cause wrong signal
to activate alarm function.
4.12. AUTO POWER OFF FUNCTION
When there is no any operation within 15minutes, the meter will
be automatically powered off and standby mode. To start the
meter again, turn the rotary function switch to OFF position and
then turn it to any other ranges. To cancela uto power off
function, press SELECT key and turn on the power switch at the
same time. The "APO" symbol disappears from the LCD.
5. MAINTENANCE
The meter is a precision instrument. Any changes on the circuit
by the users are not allowed.
(I) Keep away from water, dust. DO NOT drop the meter.
(2) Keep away from environment of high temperature, high
humidity, in flammables and explosives, and strong magnetic
field.
(3) Clean the case of the meter regularly with web cloth and soft
cleaner. DO NOT use corrosive solvents or alcohol such strong
solvents.
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