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8.3 Storage
The measuring instrument shall be stored in a ventilated room with ambient temperature of
5℃to 40℃and relative humidity of 15% to 85%. The air shall not contain harmful impurities in
corrosive to the instrument.
8.4 Warranty
This instrument shall be maintained and repaired by professional technical personnel; please
do not arbitrarily replace various components within the instrument in maintenance; after the
maintenance, a new measurement and calibration shall be carried out so as not to affect the test
accuracy. The warranty range shall not include the damage to the instrument due to the user's
blind maintenance and replacement of components, in which case the user shall bear the cost of
maintenance.
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