Seaward DO5000 Series - Manual (Page 7)

Operating Instructions Microhmmeter Type DO5000
2
1.2 Definitions and Terminology
µ Ωmicrohmm 0.000001 Ohm
m Ωmilliohm 0.001 Ohm
k Ωkilohm 1000 Ohm
Pt100 Platinum resistance thermometer (100 Ω at 0°C)
+U/-U Voltage connection
+I/-I Current connection
Four terminal measurement Kelvin principle of measurement using 2 wires (I1 I2) to
pass current through Rx and 2 wires (P1 P2) to measure the
voltage.
Kelvin clips Crocodile clips with isolated jaws, one side being the current
I connection, the other voltage U connection.
Indicates reading compensated for 20°C
Ω/Km Indicates resistance per Kilometre
Km Indicates cable length in Kilometres
m Indicates cable length in metres
:
TC