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AFNOR
NF EN 50470-4
En Vigor
2023-09-06
Electricity metering equipment - Part 4: Particular requirements -
Static meters for DC active energy (class indexes A, B and C)
AFNOR
UTE C46-409
En Vigor
1991-06-01
Provisional requirements. Industrial-process measurement and control.
Temperature and physical variables display controllers with adjustable
functions and discontinuous output signals.
AFNOR
AFNOR
NF EN 60368-4
En Vigor
2001-05-01
Piezoelectric filters of assessed quality - Part 4 : sectional
specification - Capability approval










