janitza UMG511 Installation And Commissioning Manual page 70

Power quality analyser

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Technical data

Measurement uncertainty

Measurement uncertainty of the UMG511 applies to application within the measurement ranges.

The measurement value must be within the stated limits. Measurement uncertainity is not speci-

fied outside of these limits.

The specification applies under the following conditions:

• Annual recalibration,

• a pre-heating time of 10 minutes,

• an environmental temperature of 18..28°C.

If the device is operated outside a range of 18..28°C, an additional measurement error of ±0.01%

deviation from the measurement value per °C must be considered.

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