6 GMC-I Gossen-Metrawatt GmbH
1 Safety Features and Precautions
You have selected an instrument which provides you with a
high level of safety.
This instrument fulfills the requirements of the applicable
European and national EC guidelines. We confirm this with
the CE marking. The relevant declaration of conformity can
be obtained from GMC-I Gossen-Metrawatt GmbH.
The analog digital multimeter is manufactured and tested in
accordance with safety regulations IEC 61010–1:2001 /
DIN EN 61010–1:2001 / VDE 0411–1:2002. When used
for its intended purpose (see page 5), safety of the opera-
tor, as well as that of the instrument, is assured. Their
safety is however not guaranteed, if the instrument is used
improperly or handled carelessly.
In order to maintain flawless technical safety conditions, and to
assure safe use, it is imperative that you read the operating
instructions thoroughly and carefully before placing your instru-
ment into service, and that you follow all instructions contained
therein.
For your safety, as well as for the protection of your instru-
ment, the multimeter is equipped with an automatic socket
blocking device. This is coupled to the rotary switch, and
only allows connection to the socket required for the
selected function. It also prevents the switching of the
rotary selector to disallowed functions when a measure-
ment cable is plugged into a socket.
The following special multimeter is not covered by the new safety
standard: METRA HIT 23S.
Measuring Categories and their Meaning per IEC 61010-1
The measurement category and the relevant maximum
rated voltage (e. g. 600 V CAT III) which are shown on the
instrument casing apply to your measuring instrument.
CAT Definition
I
Measurements in electrical circuits not directly connected to
the mains system:
e. g. power systems in motor vehicles or aeroplanes, batteries ...
II
Measurements in electrical circuits directly connected to the
low-voltage system:
via plug, e.g. in households, offices, laboratories ...
III
Measurements in facility installations:
stationary consumers, distributor connections, devices
attached to a distributor
IV
Measurements at the source of low-voltage installations:
Meters, main terminal, primary overcurrent protection devices
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