User manual

26 GMC-I Messtechnik GmbH
8 Maintenance – Calibration
Maintenance Housing
No special maintenance is required. Keep outside surfaces clean and dry. Use a slightly
dampened cloth for cleaning. Avoid the use of solvents, cleansers or abrasives.
Recalibration
The respective measuring task and the stress to which your measuring instrument is sub-
jected affect the aging of the components and may result in deviations from the guaranteed
accuracy.
If high measuring accuracy is required and the instrument is frequently used in field applica-
tions, 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 relation to traceable standards
are measured and documented. The deviations determined in the process are used for cor-
rection 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 (→ Company → DAkkS Calibration Center or → FAQs → Cali-
bration questions and answers).
By having your measuring instrument calibrated regularly, you fulfill the requirements of a
quality management system per DIN EN ISO 9001.
Standards DIN VDE 0701-0702 and IEC 63353 (VDE 0751) stipulate that only measuring
instruments which are regularly tested and calibrated may be used for testing.
Device Return and Environmentally Compatible 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 with the symbol shown to 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.
* Verification of specifications or adjustment services are not part of the calibration. For products from our factory, however,
any necessary adjustment is frequently performed and the observance of the relevant specification is confirmed.