Operation Manual

30 GMC-I Messtechnik GmbH
12.2.2 Electronic Fuse
This fuse protects low-resistance (Rlo) and resistance measure-
ments (kΩ) from overloading (electronic hardware circuit).
„EL.Fu“ appears when the fuse blows.
Ð Eliminate the cause of overloading. This error message must
be cleared by switching to OFF position.
12.3 Housing
No special maintenance is required for the housing. Keep outside
surfaces clean. Use a slightly dampened cloth or a plastic cleaner
for cleaning. Avoid the use of cleansers, abrasives or solvents.
Return and Environmentally Sound Disposal
The instrument is a category 9 product (monitoring and control
instrument) in accordance with ElektroG (German electrical and
electronic device law). This device is subject to the RoHS direc-
tive. Furthermore, we make reference to the fact that the current
status in this regard can be accessed on the Internet at
www.gossenmetrawatt.com by entering the search term WEEE.
We identify our electrical and electronic devices in
accordance with WEEE 2012/19/EU and ElektroG
using the symbol shown at the right per DIN EN 50419.
These devices may not be disposed of with the trash.
Please contact our service department regarding the return of old
devices (see address in section 15).
If you use batteries or rechargeable batteries in your instrument or accesso-
ries which no longer function properly, they must be duly disposed of in
compliance with the applicable national regulations.
Batteries or rechargeable batteries may contain harmful substances or
heavy metal such as lead (PB), cadmium (CD) or mercury (Hg).
They symbol shown to the right indicates that batteries or
rechargeable batteries may not be disposed of with the
trash, but must be delivered to collection points specially
provided for this purpose.
13 Recalibration
The measuring tasks performed with your instrument, and the
stressing it’s subjected to, influence aging of its components any
may result in deviation from the specified levels of accuracy.
In the case of strict measuring accuracy requirements, as well as
in the event of use at construction sites with frequent stress due
to transport and considerable temperature fluctuation, we recom-
mend a relatively short calibration interval of once per year. If your
instrument is used primarily in the laboratory and indoors without
considerable climatic or mechanical stressing, a calibration inter-
val of once every 2 to 3 years is sufficient as a rule.
During recalibration* at an accredited calibration laboratory (DIN
EN ISO/IEC 17025), deviations from traceable standards demon-
strated by your measuring instrument are documented. Ascer-
tained deviations are used to correct displayed values during later
use of the instrument.
We would be happy to perform DAkkS or factory calibration for
you at our calibration laboratory. Further information is available at
our website:
www.gossenmetrawatt.com (→ Company → DAkkS Calibration
Center or → FAQs → Question and Answers Regarding Calibra-
tion).
Recalibration of your instrument at regular intervals is essential for
the fulfillment of requirements according to quality management
systems per DIN EN ISO 9001.
* Examination of the specification, as well as adjustment, are not included in calibra-
tion. However, in the case of our own products, any required adjustment is per-
formed and adherence to the specification is confirmed.
Pb Cd Hg