VOLTCRAFT VC-2020 Bedienungsanleitung Seite 26

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Contact an expert if you have doubts about the working mode, safety or connection of the device.
Measuring instruments and accessories are not toys and have no place in the hands of children.
On industrial sites the accident prevention regulations of the association of the industrial workers' socie-
ty for electrical equipment and utilities must be followed.
In schools, training centres, computer and self-help workshops, handling of measuring instruments must
be supervised by trained personnel in a responsible manner.
Before measuring voltages, always make sure that the measuring instrument is not set to a measuring
range for currents.
The voltage between any socket of the measuring instrument and the ground may not be higher than
600V VDC in excess voltage category III.
Be especially careful when dealing with voltages higher than 25V AC or 35 V DC. Even at voltages as
low as these, there is a danger of fatal electric shock if you touch electric conductors.
Check the measuring device and its measuring lines for damage before each measurement. Never car-
ry out any measurements if the protecting insulation is defective (torn, ripped off etc.)
To avoid an electric shock, make sure not to touch the connections/measuring points to be measured
neither directly nor indirectly during measurement.
Do not use the multimeter just before, during or just after an electrical storm (electrical shock / high-ener-
gy overvoltage!). Make sure that your hands, shoes, clothing, the floor, the measuring device and/or
measuring lines, the circuits and also parts of it are always dry.
Do not operate the measuring device in rooms or under adverse environmental conditions, where inflam-
mable gases, vapours or dust are or could be present.
Avoid an operation near:
- strong magnetic or electromagnetic fields
- transmitter aerials or HF generators,
This could affect the measurement.
For safety reasons, when measuring only use measuring cables or accessories which are adjusted to
the specifications of the multimeter. Only dual or specially insulated measuring equipment may be used
(e.g. fully insulated BNC adapters, etc.)
If you have a reason to believe that the device can no longer be operated safely, disconnect it immedia-
tely and secure it against being operated unintentionally. It can be assumed that safe operation is no lon-
ger possible if:
- the device is visibly damaged,
- the device no longer works and
- the unit was stored under unfavourable conditions for a long period of time or
- if it has been subjected to considerable stress in transit.
Do not switch the measuring instrument on immediately after it has been taken from a cold to a warm
environment. The condensation that forms might destroy your device. Leave the device turned off until it
has reached room temperature.
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