Major tech MT478 Manuel de l'utilisateur - Page 10
Parcourez en ligne ou téléchargez le pdf Manuel de l'utilisateur pour {nom_de_la_catégorie} Major tech MT478. Major tech MT478 16 pages. Voltage tester
Imprimer la page
5. Operation
5.1 Preparing the test
• Prior to every test, please ensure that the instrument is in perfect
condition:
• For example, keep an eye out for a broken housing or leaking batteries.
• Always carry out a function test before using the voltage tester, see
below.
• Check that the instrument is functioning properly(for example at a known
voltage source)before and after every test.
• If the safety of the user can not be guaranteed, switch off the instrument
and secure it to prevent unintentional usage.
•
Carrying out a function test
• Connect the voltage tester probe tips for 4 to10 seconds and then
disconnect.
• All LEDs should light up and the indicator probe side vibrates. All
segments are illuminated on the LCD display.
5.2 Preparing the test
• Connect both test probes with power source.
• As from a voltage of > 6V the voltage tester
switches on automatically.
• The voltage is displayed via LEDs.
• The different indicating signals of the voltage
detector (including the ELV lim indication)are not
to be used for measuring purposes.
• The voltage is also shown on the LCD display.
• For AC voltage, the "AC" is illuminated.
• For positive voltage, the "+" is illuminated.
• For negative voltage, the "-" is illuminated.
• In the case of DC voltage, the polarity of the indicated voltage relates
to the voltage tester probe tip
• Once the safety extra-low voltage (50V AC /120V DC) is reached or
exceeded, the "
main circuit failure, an acoustic signal is emitted.
• Once voltage is applied to the measuring instrument, press the HOLD
button, the LCD and LEDs display shows the recorded reading.
• To delete the recorded value, press the HOLD button once again. The
LCD and LED displays once again indicates the voltage currently
being applied to the probe tips.
" is illuminated, in the event of no battery power or
10