Housing Maintenance; Return And Environmentally Sound Disposal; Recalibration - Gossen MetraWatt METRAHIT ENERGY TRMS System Multimeter Operating Instructions Manual

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Attention!
Use specified fuses only!
If fuses with other blowing characteristics, other current rat-
ings or other breaking capacities are used, the operator is
placed in danger, and protective diodes, resistors and other
components may be damaged.
The use of repaired fuses or short-circuiting the fuse holder
is prohibited.

9.4 Housing Maintenance

No special maintenance is required for the housing. Keep outside
surfaces clean. Use a slightly dampened cloth for cleaning. Avoid
the use of cleansers, abrasives or solvents.

9.5 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 not subject to the RoHS
directive.
We identify our electrical and electronic devices (as of
August 2005) in accordance with WEEE 2002/96/EC
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 on page 4).
GMC-I Messtechnik GmbH
If you use batteries or rechargeable batteries in your instrument or
accessories which no longer function properly, they must be duly
disposed of in compliance with the applicable national regulati-
ons.
Batteries or rechargeable batteries may contain harmful substan-
ces 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.

9.6 Recalibration

The respective measuring task and the stress to which your mea-
suring instrument is subjected affect the ageing of the compo-
nents and may result in deviations from the guaranteed accuracy.
If high measuring accuracy is required and the instrument is fre-
quently used in field applications, combined with transport stress
and great temperature fluctuations, we recommend a relatively
short calibration interval of 1 year. If your measuring instrument is
mainly used in the laboratory and indoors without being exposed
to any major climatic or mechanical stress, a calibration interval of
2-3 years is usually sufficient.
During recalibration* in an accredited calibration laboratory
(DIN EN ISO/IEC 17025) the deviations of your instrument in rela-
tion to traceable standards are measured and documented. The
deviations determined in the process are used for correction of
the readings during subsequent application.
Maintenance – Calibration
Pb Cd Hg
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