Bedienungsanleitung Gossen Metrawatt METRISO PRIME (Seite 11 von 14) (Englisch)

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GMC-I Messtechnik GmbH 11

7.4 Recalibration, Repair, Parts Replacement, and Device Balancing

Voltage conducting parts may be exposed when the instrument is

opened. The instrument must be disconnected from the measuring circuit

before repair, replacement of parts or balancing. If the repair of an open,

live instrument cannot be avoided, this may only be performed by trained

personnel who are familiar with the dangers involved.

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 tem-

perature 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 correction of the readings during

subsequent application.

We are pleased to perform DAkkS or factory calibrations for you in our cal-

ibration laboratory. Please visit our website at

www.gossenmetrawatt.com ( Company  DAkkS Calibration 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.

8 Z580A Crank Generator Operating Mode

8.1 Installing the Crank Generator

Ð Set the range selector switch at the METRISO PRIME to the OFF/V posi-

tion and the function selector switch to V.

Ð Disconnect the measurement cables from the device under test!

Ð Unscrew and remove the battery module.

Ð Pull the battery clip out, and save the battery module for possible later

use.

Ð Plug the battery clip onto the crank generator module.

Ð Insert the crank module into the instrument with the crank handle on

top. Be certain that the rubber ring is not separated from the crank

generator.

Ð Secure the crank module with the 4 screws.

8.2 Operating the Crank Generator

Ð Fold the crank handle out until it snaps into place.

Attention!

Turn the crank only in the direction indicated by the arrow.

The crank generator is difficult to turn in the other direction, and

the protective devices at the generator and in the instrument may

be destroyed after several rotations! Brief, inadvertent rotation in

the wrong direction causes no damage.

Fold the crank handle to its closed position before transporting the instru-

ment.

8.3 Measuring Insulation Resistance in the Crank Generator Operating Mode

Ð Establish contact with the DUT first, preferably with the included alli-

gator clips. If this is not possible, and if contact must be established

with the test probes, you will need a second person for assistance.

Ð Select the test voltage with the range

selector switch.

Ð Set the function selector switch to .

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 obser-

vance of the relevant specification is confirmed.

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