Ethos 4700 - Following Lines with Higher Location Depth (Dual-Pole Application)

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3.14 Following lines with higher location depth (dual-pole application)
Note:
If the dual-pole application is carried out on multi-wire cables, the location depth
is widely limited. The reason is that the go-and-return lines are installed very closely.
Thus, a strong distortion of the magnetic field occurs. The electro-magnetic field
may not develop at the bottleneck. This limitation can easily be eliminated when
using a separate conductor to simulate the return line. This separate conductor
allevel is a larger spreading of the electro-magnetic field. Any conductor or cable
reel can be used as separate return conductor.
When tracing the conductors, special care has to be taken that the distance between
go-and-return-line is larger than the location depth. In practical applications, this
amounts to approx. 2.0 meters..
For this application, humid walls, plaster, etc.have only an insignificant influence
on the location depth
• The current circuit must not be live.
• Connect the transmitter in compliance with
the figure 14.
• The distance between go-and-return line
must be minimum 2.0 meters to 2.5 meters
or more.
• Proceed as described in the application
example.
The switching with button 4 from “LEVEL I” to > 2m “LEVEL III” the sensitvity
of Distance is increased up to a factor of 5.
Setup: manual mode, minimal sensitivity. Tracing depth max. 2.5 meters.
figure 14