Sonel MPI-520 - Iso ); Additional Uncertainties According to IEC 61557-3 (Z); Additional Uncertainties According to IEC 61557-4 (R ±200 Ma); Additional Uncertainties According to IEC 61557-5

MPI-520 OPERATING MANUAL version 3.4
63
10.2.1 Additional uncertainties according to IEC 61557-2 (R
ISO
)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
2%
10.2.2 Additional uncertainties according to IEC 61557-3 (Z)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
1,2 m lead – 0Ω
5 m lead – 0.011Ω
10 m lead – 0.019Ω
20 m lead – 0.035Ω
WS-03, WS-04 lead – 0.015Ω
Phase angle 0..30°C at the bot-
tom of test range
E
6.2
0.6%
Frequency 99%..101%
E
7
0%
Network voltage 85%..110%
E
8
0%
Harmonic
E
9
0%
DC component
E
10
0%
10.2.3 Additional uncertainties according to IEC 61557-4 (R ±200 mA)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0.5% (BAT is not lit)
Temperature 0...35°C
E
3
1.5%
10.2.4 Additional uncertainties according to IEC 61557-5 (R
E
)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
±0.25 digit/°C for 50 V
±0.33 digit/°C for 25 V
Serial interference voltage
E
4
1%, generally according to the be-
low formulas
Resistance of electrodes
E
5
2% generally according to the be-
low formulas and the diagram
Frequency 99%..101%
E
7
0%
Network voltage 85%..110%
E
8
0%
Additional uncertainty caused by serial interference voltage
R
E
Additional uncertainty [Ω]
0.00...9.99 Ω
±((0.01R
E
+ 0.012)U
Z
+ 0.003 U
Z
2
)
10.0...99.9 Ω
±((0.001R
E
+ 0.05)U
Z
+ 0.001 U
Z
2
)
100 Ω...1.99 kΩ
±((0.001R
E
+ 0.5)U
Z
+ 0.001 U
Z
2
)