Operation Manual

GMC-I Messtechnik GmbH 25
GB
16.2 Power Pack
Use only the NA HIT 2X power pack for power supply to your
instrument. The highly insulated cable assures safety for the
operator, and the power pack provides for reliable electrical
isolation. When a mains power pack is used, the batteries
inside the instrument are disconnected automatically.
Note!
We recommend that zero balancing be performed in
accordance with chapter 6.1, page 9, if the power
pack is used.
16.3 Housing
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.
16.4 Recalibration
The respective measuring task and the stress to which your
measuring instrument is subjected affect the ageing 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 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
relation to traceable standards are measured and docu-
mented. 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 (→ Company → DAkkS Calibra-
tion Center or → FAQs → Calibration questions and answers).
By having your measuring instrument calibrated regularly, you
fulfill the requirements of a quality management system per
DIN EN ISO 9001.
* Verification of specifications or adjustment services are not part of the cali-
bration. For products from our factory, however, any necessary adjustment
is frequently performed and the observance of the relevant specification is
confirmed.
Country Type Article No.
Germany NA HIT 2X Z218H