MRU-200-GPS OPERATING MANUAL Version 1.06
52
Interference frequency measurement f
N
Range
Resolution
Basic uncertainty
15
to
450Hz
1Hz
±(1% m.v. + 2 digits)
measurement for interference voltage >1V (for interference voltage <1V the following is
displayed: f=---)
Measurement of connection and equipotential bonding resistance (two-cable method)
The measurement method: technical, in accordance with IEC 61557-5
Range of measurement in accordance with IEC 61557-4: 0,045
... 19,99k
Range
Resolution
Basic uncertainty
0.000 to
3,999Ω *
0.
001Ω
±(2% m.v. + 4 digits)
4.00 to
39,99Ω
0.
01Ω
±(2% m.v. + 2 digits)
40 to
399,9Ω
0.
1Ω
400 to
3999Ω
1Ω
4,000 to
19,99kΩ
0.
01kΩ
±(5% m.v. + 2 digits)
* In 0.000 to 0.045
Ω range uncertainty is unspecified.
Measurement of earth resistance (3, 4-cable method)
The measurement method: technical, in accordance with IEC 61557-5
Range of measurement in accordance with IEC 61557-5: 0.100
to 19.99k
Range
Resolution
Basic uncertainty
0.000 to 3,999
Ω *
0.
001Ω
±(2% m.v. + 4 digits)
4.00 to
39,99Ω
0.
01Ω
±(2% m.v. + 2 digits)
40.0 to
399,9Ω
0.
1Ω
400 to
3999Ω
1Ω
4.00 to 19.
99kΩ
0.
01kΩ
±(5% m.v. + 2 digits)
* For 3-cable method in 0.000 to 0.045
Ω range uncertainty is unspecified.
Measurement of the auxiliary electrode resistance
Range
Resolution
Basic uncertainty
0 to
999Ω
1Ω
±(5% (R
E
+R
H
+R
S
) + 8 dig-
its)
1.00 to 9.
99kΩ
0.
01kΩ
10.0 to 19.
9kΩ
0.
1kΩ
