Operation Manual
GMC-I Messtechnik GmbH 153
Maintenance – Calibration
11.4 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.
We are pleased to perform DAkkS or factory calibrations for you in
our calibration laboratory. Please visit our website at
www.gossenmetrawatt.com ( Services DAkkS Calibration
Center or FAQs Calibration questions and answers).
By having your measuring instrument calibrated regularly, you ful-
fill the requirements of a quality management system per
DIN EN ISO 9001.
Standards DIN VDE 0701-0702 and IEC 63353 (VDE 0751) stipu-
late that only measuring instruments which are regularly tested
and calibrated may be used for testing.
*
Verification of specifications or adjustment services are not part of the calibra-
tion. For products from our factory, however, any necessary adjustment is fre-
quently performed and the observance of the relevant specification is confirmed.
11.5 Return and Environmentally Sound Disposal
The instrument is a category 9 product (monitoring and control in-
strument) in accordance with ElektroG (German Electrical and
Electronic Device Law). This device is not subject to the RoHS di-
rective.
We identify our electrical and electronic devices (as of Au-
gust 2005) in accordance with WEEE 2002/96/EG and
ElektroG with the symbol shown to the right per DIN EN
50419.
These devices may not be disposed of with the trash. Please con-
tact our service department regarding the return of old devices
(see page 3).
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 regula-
tions.
Batteries or rechargeable batteries may contain harmful sub-
stances or heavy metal such as lead (PB), cadmium (CD) or mer-
cury (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.
Pb Cd Hg