Digital Multimeter; Safety; Maintenance; During Use - Velleman LAB-1 Handbuch

Digital multimeter

DIGITAL MULTIMETER

SAFETY

1. SAFETY INFORMATION
This multimeter has been designed in accordance with IEC-1010. This norm pertains to electronic measuring
instruments that belong to an overvoltage category (CAT II 300V and CAT I 600V)
Follow all safety and operating instructions to ensure that the meter is used safely and is kept in good running order.
Full compliance with safety standards can only be guaranteed when the buyer uses the test leads supplied with this
packaging. If necessary, they should be replaced with identical leads.
2. SAFETY SYMBOLS
Important safety information, refer to the user manual.
Fuse should be replaced : the rating is specified in the manual.

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 200mA / 250V)
(Quick acting)
Do not use the device unless all the covers are in place and securely fastened.
Do not apply abrasives or solvents to the meter. Use a damp cloth and mild detergent for cleaning purposes.

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 I 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 tension or current to be measured is
completely unknown.
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.

DESCRIPTION

The device is a battery-operated, 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.
6