MI 2126 Earth 2/3
Technical specification
18
5 Technical specification
5.1 Functions
Earth
resistance, two-wire method, three-wire method
Measuring range according to EN61557-5 is: 1.77
Ω
÷
19.99 k
Ω
.
Display range (
Ω
)
Resolution (
Ω
)
Accuracy
0.00
÷
19.99
0.01
20.0
÷
199.9
0.1
200
÷
999
1
1.000 k
÷
1.999 k
1
±
(2 % of r 10 digits)
2.00 k
÷
19.99 k
10
±
(5 % of reading)
Auxiliary earth electrode resistance R
C
100
×
R
E
or 50 k
Ω
(whichever is
lower), indicator only
Probe resistance R
P
100
×
R
E
or 50 k
Ω
(whichever is
lower), indicator only
Additional probe resistance error
at R
Cmax
or R
Pmax.
±
(10 % of m. r.* + 3 digits)
Additional error at 3 V voltage noise (50 Hz / 60 Hz)
±
(5 % of r 10 digits)
Automatic noise voltage indication threshold
3 V (<50
Ω
, worst case)
Open-terminal test voltage
< 40 Va.c.
Test voltage shape
sine wave
Test voltage frequency
125 Hz / 150 Hz
Short-circuit test current
< 20 mA
Automatic test of curr. and pot. test probe resistance
yes
Automatic test of voltage noise
yes
Accuracies apply for 1 year in reference conditions. The error in operating conditions
could be at most the error for reference conditions (specified above) +1 % of r
2 digits.
*m.r. measuring range
