During Use; General Description - Velleman DVM850BL Notice D'emploi

2. MAINTENANCE
• Before opening the case, always disconnect the test leads from all live circuits.
• Avoiding fire risks : respect the specified voltage and current ratings when replacing the
fuse.
F 500mA / 250V, 10A / 250V (Quick acting)
• Do not use the device unless the back cover is in place and securely fastened.
• Do not apply abrasives or solvents to the meter. Use a damp cloth and mild detergent for
cleaning purposes.

3. DURING USE

• Never exceed the limit value for protection. This limit value is listed separately in the
specifications for each range of measurement.
• Do not touch unused terminals when the meter is linked to a circuit which is being tested.
• Never use the meter with category II installations when measuring voltages that might
exceed the safety margin of 600V above earth ground.
• Set the range selector at its highest position if the intensity of the charge to be measured is
unknown beforehand.
• Disconnect the test leads from the tested circuit before rotating the range selector in order
to change functions.
• When carrying out measurements on a TV set or switching power circuits, always
remember that the meter may be damaged by any high amplitude voltage pulses at test
points.
• Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your
fingers behind the probe barriers at all times during measurement.
• Before attempting to insert transistors for testing, always verify if the test leads have been
disconnected.
• Components should not be connected to the hFE socket while test leads are being used to
execute voltage measurements.
• Never perform resistance measurements on live circuits.

4. GENERAL DESCRIPTION

The device is a battery-operated, hand-held 3 ½ digital multimeter for measuring DC and
AC voltages, DC current and resistance. It also offers the possibility of executing continuity
tests and of testing diodes and transistors. The back light is optional.