Tenma 72-3545, Руководство пользователя, Страница: 13 / 14

13
MEASURING INDUCED VOLTAGE (NCV)
• Set the measuring function range by rotating the
dial so it aims at “ NCV ”.
• The top right end of the clamp head is equipped
with an electromagnetic induction sensor, which
is able to detect whether the alternating current
magnetic field exists or not.
• During measurement, the right end of the clamp
head must be close to the tested conductor to
detect induction.
• The screen will display “EF” if the induced voltage
is not detected. When the test distance is less
than 10mm and the tested voltage is larger than
100Vrms, the Meter will sound and the NCV LED
will flicker.
• According to the magnitude of induced voltage, the
central screen will display such four grades as “-”,
“- -”, “- - -” and “- - - -”.
• The greater the induced voltage, the higher the
grade displayed.
MAINTENANCE
•
Warning : Remove the test probes before uncapping the lid in order to avoid
electric shock.
• Maintenance should only be undertaken by a qualified technician, professional
maintenance staff or a designated maintenance department.
• Clean the shell using a dry cloth.
• Do not use any chemicals, abrasives or solvents that could damage the Meter.
REPLACING THE BATTERIES
• Turn off the meter and pull out the test probe at the input terminal.
• Place the meter face down and unscrew the battery holder and remove the battery
cover.
• Remove the old batteries and install two new batteries of the same specification
(1.5V AAA), observing the correct polarities.
• Once installed, fit the battery cover back in place and secure it by screwing in the
screw.