Reference Conditions of Influence Quantities
Influence Quantities are variables that affect measurement errors to a minor degree. Accuracy is
verified under nominal value (within the specified tolerance) of these conditions.
⚫ Ambient temperature 23°C ±1°C
⚫ Input frequency 50 or 60Hz ±2%
⚫ Input waveform Sinusoidal (distortion factor < 0·005)
⚫ Auxiliary supply voltage Nominal ±1%
⚫ Auxiliary supply frequency Nominal ±1%
⚫ Auxiliary supply waveform (if AC) Sinusoidal (distortion factor < 0·05)
⚫ Magnetic field of external origin Terrestrial flux
Environment
⚫ Operating temperature -25°C to +55°C*
⚫ Storage temperature -40°C to +70°C*
⚫ Relative humidity 0 to 90%, non-condensing
⚫ Altitude Up to 2000m
⚫ Warm up time 1 minute
⚫ Vibration 10Hz to 50Hz, IEC 60068-2-6, 2g
⚫ Shock 30g in 3 planes
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