39
Measurement uncertainty
The measurement uncertainty of the UMG507 applies to the use of the following measuring
ranges. The measured value must lie within the given limits. Outside of these limits the mea-
surement uncertainty is not specified. The ambient temperature must lie within the range 18
... 28°C. Outside of this temperature range an additional measuring error must be taken into
account.
The specification applies under the following conditions:
Annual recalibration.
A preheating time of 10 minutes.
An ambient temperature of 18 .. 28°C.
If the device is operated outside the range from 18 .. 28°C , an additional measurement error
of ±0.01% of the measured value per °C deviation must be taken into account.
Accuracy class to EN61036:1996, VDE0418 Part 7: May 1997, IEC1036:1996
with current transformer ../5A
: Class 1
with current transformer ../1A
: Class 2
Measured value
Frequency
Measurement uncertainties
Voltage
45 .. 65Hz
±(0.2% rdg + 0.02% rng)
Current L
45 .. 65Hz
±(0.2% rdg + 0.05% rng)
Current N
45 .. 65Hz
±(0.6% rdg + 0.05% rng)
Phase
45 .. 65Hz
±0.5°
Power
45 .. 65Hz
±(0.4% rdg + 0.1% rng
Frequency
45 .. 65Hz
±(0.2% rdg + 0.75% rng
The power measuring range is calculated from the current and voltage measuring ranges cho-
sen. (rng P = rng U * rng I).
Measured value
Measuring range Crest factor for max. RMS-Measured value
Voltage
50 ... 500V
rms
1.1
Current
0.005 ... 6A
rms
1.4
Measured
value Measurement
uncertainties
Accuracy of the internal clock
±2 minutes/month (18°C ... 28 °C)
Abbreviations used:
rng = of the measured range
rdg = of the measured value
Technical Specifications
