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10.—(1) The metrological characteristics of a cold-water meter shall not be influenced in any inadmissible way by the connection to it of another device, by any feature of the connected device itself or by any remote device that communicates with the instrument.
(2) A hardware component that is critical for metrological characteristics shall be designed so that it can be secured. Security measures foreseen shall provide for evidence of an intervention.
(3) Software that is critical for metrological characteristics shall be identified as such and shall be secured.
(4) Software identification shall be easily provided by the instrument.
(5) Evidence of a software intervention shall be available for a reasonable period of time.
(6) Measurement data, software that is critical for measurement characteristics and metrologically important parameters stored or transmitted shall be adequately protected against accidental or intentional corruption.
(7) For utility measuring instruments the display of the total quantity supplied or the displays from which the total quantity supplied can be derived, whole or partial reference to which is the basis for payment, shall not be able to be reset during use.
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