Measurement Of Resistances; Resistance Measurement (R~) - Fluke 1625-2 User Manual

1625-2
Users Manual
Curve 3:

Measurement of Resistances

Resistance Measurement (R~)

This measuring function determines the ohmic resistance between 0.02 Ω and 300 kΩ.
The measurement is done with ac voltage. For measurements of very low resistances a
compensation of the connecting leads is suggested (see Compensation of Measuring
Lead Resistance).
1. Turn central rotary switch to position "R~".
2. Connect instrument as shown in Figure 12.
34
With increasing depth ρE is not decreasing: a strip conductor electrode is
advisable.
As measuring results are often distorted and corrupted, for example, by
underground pieces of metal and underground aquifers, a second
measurement, in which the spike axis is turned by an angle of 90 °, is
always advisable (see graph below).
90°
E ES
I
Figure 12. Resistance Measurement (R~)
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