HT Instruments T2000 Bedienungsanleitung Seite 43

Under these conditions, assuming that the resistance of the cables connecting the rods is
negligible, the following relationships are valid:
R1 = RA + RB
R2 = RB + RC
R3 = RC + RA
where the values R1, R2 e R3 are measured by the instrument.
The relationships (3), (4) and (5) are to be considered valid only provided that
it is possible to neglect the effect of "mutual influence" among the rods
connected in series, i.e. with rods placed at a sufficient distance between
each other (equal to at least 5 times the length of a single rod or 5 times
the maximum system
The result of the relationships (3), (4) and (5) is:
RA = (R1 + R3 – R2) / 2 → Resistance of rod A
and consequently:
RB = R1 – RA → Resistance of rod B
RC = R3 – RA → Resistance of rod C
Fig. 13: Three-point method: third test R3
CAUTION
diagonal),
EN – 14
so that they do not influence each other.
T2000-T2100
(3)
(4)
(5)