User Manual

GMC-I Messtechnik GmbH 79

Maintenance – Calibration

10.6 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 recalibration1 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 DKD or factory calibrations for you in

our calibration laboratory. Please visit our website at

www.gossenmetrawatt.com (→ Services → DKD 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.

10.7 Manufacturer’s Guarantee

All METRAHIT measuring and calibration instruments are

guaranteed for a period of 3 years after date of shipment. The

manufacturer’s guarantee covers materials and workmanship.

Damages resulting from use for any other than the intended

purpose, as well as any and all consequential damages, are

excluded.

Calibration is guaranteed for a period of 12 months.

Verification of specifications or adjustment services are not part of the

calibration. For products from our factory, however, any necessary ad-

justment is frequently performed and the observance of the relevant

specification is confirmed.