MPI-535
– BRIEF USER MANUAL
37
Measuring soil resistivity (ρ)
Range
Resolution
Basic
uncertainty
0.0...99.9 Ωm
0.1 Ωm
Depending on the
basic uncertainty of
the measurement R
E
100...999 Ωm
1 Ωm
1.00...9
.99 kΩm
0.01 kΩm
10.0...99.9 kΩm
0.1 kΩm
Measurement with Wenner method,
Option for setting the distance in meters or feet,
Selecting a distance: 1 m ... 30 m (1 ft ... 90 ft).
7.1.7
Low-voltage measurement of continuity of circuit and resistance
Measurement of continuity of protective conductors and equipotential bonding with 200
mA
current
Measurement range according to IEC 61557-
4: 0.12…400 Ω
Range
Resolution
Basic uncertainty
0.00...19.99 Ω
0.01 Ω
(2% m.v. + 3 digits)
20.0...199.9 Ω
0.1 Ω
200...4
00 Ω
1 Ω
Voltage at open terminals: 4 V…9 V
Output current at R<2
: min. 200 mA (I
SC
: 200 mA..250 mA)
Compensation of test leads resistance
Measurements for both current polarizations
Measurement of resistance with low current
Range
Resolution
Basic uncertainty
0.0...199.9 Ω
0.1 Ω
(3% m.v. + 3 digits)
200...1999 Ω
1 Ω
Voltage at open terminals: 4 V…9 V
Output current < 8 mA
Audio signal for measured resistance < 30
± 50%
Compensation of test leads resistance
