Fluke 2042 Инструкция по эксплуатации онлайн [22/28] 4556

Following lines with higher location depth (dual-pole application)

If the dual-pole application is carried out on multi-wire cables (e.g. NYM 3x1.5mm2), 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

15.

• The distance between go-and-return line must be mini-

mum 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

»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.

Tracing Conductors Within the soil (single-pole application)

The connection is realised in compliance with Figure 16.

Ensure that the current circuit is not live.

Make sure that the distance between the connection to the ground and the conductor to be de-

tected is high. If the distance is too close, no definite assignment of the signal received can be

made to one conductor.

The tracing depth amounts to maximum 2 meters. Furthermore, the tracing depth strongly de-

pends on the soil characteristics.

> 2 m

Fluke 2042

Users manual