Information

Gossen Metrawatt GmbH 3
In order to provide our customers always with the latest version of
our detailed operating instructions, we have decided to offer them for
download from our homepage.
Please refer to our web address www.gossenmetrawatt.com for the
respective operating instructions including all sections on safety,
initial start-up, operation and maintenance in the available lan-
guages.
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Safety Features and Precautions
This instrument fulfills the requirements of the applicable Euro-
pean guidelines and national regulations. This is confirmed by
means of the CE mark. A corresponding declaration of conformity
can be requested from Gossen Metrawatt GmbH.
The TRMS digital multimeter has been manufactured and tested
in accordance with the following safety regulations:
IEC 61010–1:2010 / DIN EN 61010–1:2010 (VDE 0411–1:2011) and
IEC 61010-2-033:2012 / DIN EN 61010-2-033 (VDE 0411-2-033)
When used for its intended purpose (see Seite 4), safety of the
operator, 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 instrument into service, and
that you follow all instructions contained therein.
The multimeter is equipped with an automatic socket blocking
mechanism for your safety, and in order to safeguard your
instrument. This mechanism is linked to the rotary switch and only
allows access to those jacks which are actually required for the
selected function. It also prevents the user from turning the rotary
switch to impermissible functions after the measurement cables
have already been plugged in.
Measuring Categories and their Significance per IEC 61010-1
The measuring category and the maximum rated voltage which
are printed on the device apply to your measuring instrument, for
example 1000 V CAT IV.
Observe the following safety precautions:
• The multimeter may not be used in potentially explosive
atmospheres.
• The multimeter may only be operated by persons who are
capable of recognizing contact hazards and taking the
appropriate safety precautions. Contact hazards according to
the standards exist anywhere, where voltages of greater than
33 V RMS or 70 V DC may occur. Avoid working alone when
taking measurements which involve contact hazards. Be
certain that a second person is present.
• Maximum allowable voltage between the voltage measuring
sockets or all connector sockets and ground is 1000 V for
measuring category III, and 600 V for measuring category IV.
• Be prepared for the occurrence of unexpected voltages at
devices under test (e.g. defective devices). For example,
capacitors may be dangerously charged.
• Make certain that the measurement cables are in flawless
condition, e.g. no damage to insulation, no interruptions in
cables or plugs etc.
• No measurements may be made with this instrument in
electrical circuits with corona discharge (high-voltage).
• Special care is required when measurements are made in HF
electrical circuits. Dangerous pulsating voltages may be pres-
ent.
• Measurements under moist ambient conditions are not
permitted.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit values are
included in the operating instructions; “Technical Data” in the
table entitled “Measuring Functions and Measuring Ranges” in
the “Overload Capacity” column.
• The multimeter may only be operated with installed rechargeable
battery or mains module. Dangerous currents and voltages are other-
wise not indicated, and the instrument may be damaged.
• The instrument may not be operated if the fuse cover or the
battery or mains module has been removed, or if its housing is
open.
• The input for the current measuring range is equipped with a
fuse link.
Maximum permissible voltage for the measuring circuit (=
rated voltage of the fuse) is 1000 V AC/DC.
Use specified fuses only! The fuse must have a breaking capac-
ity of at least 30 kA.
Opening of Equipment / Repair
The equipment may be opened only by authorized service per-
sonnel to ensure the safe and correct operation of the equipment
and to keep the warranty valid.
Even original spare parts may be installed only by authorized ser-
vice personnel.
In case the equipment was opened by unauthorized personnel,
no warranty regarding personal safety, measurement accuracy,
conformity with applicable safety measures or any consequential
damage is granted by the manufacturer.
Any warranty claims will be forfeited when the warranty seal has
been damaged or removed.
Repair and Parts Replacement by Authorized Service Personnel
When the instrument is opened, voltage conducting parts may be
exposed. The instrument must be disconnected from the measur-
ing circuit before the performance of repairs or the replacement of
parts. If repair of a live open instrument is required, it may only be
carried out by trained personnel who are familiar with the dangers
involved.
Defects and Extraordinary Strains
If it may be assumed that the instrument can no longer be
operated safely, it must be removed from service and secured
against unintentional use.
Safe operation can no longer be relied upon:
• If the device demonstrates visible damage,
• If the instrument no longer functions, or if malfunctioning
occurs,
• After long periods of storage under unfavorable conditions,
e.g. humidity, dust or extreme temperature.
CAT Definition
0
Measurements in electrical circuits which are not directly connected to the mains:
e.g. electrical systems in motor vehicles and aircraft, batteries etc.
II
Measurements in electrical circuits which are electrically connected to the low-
voltage mains:
via plug, e.g. in household, office and laboratory applications
III
Measurements in building installations:
Stationary consumers, distributor terminals, devices connected permanently to the
distributor
IV
Measurements at power sources for low-voltage installations:
meters, mains terminals, primary overvoltage protection devices
GB