TAKACHIHO MPL-21-E, Руководство по эксплуатации

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2.Introduction
This product is a high-performance digital measurement tool used to
measure the location and the depth of buried cables / metal pipes
from the ground. By adopting a
Digital Signal Processor (DSP), the
digital correction of the measured data provides measurements with
high precision and stability.
- Principle of measurement method -
When current flows through a buried cable/pipe, an alternating magnetic field is generated
around it.
Location, depth, and current value of the buried pipe can be measured using the Receiver at
the surface.
- Features -
• There are two modes of location measurement (with error detection / protection function)
Null mode: This method detects the point of minimum sensitivity indicated with an arrow.
Two horizontal coils connected differentially allow you to locate the position
of the buried object without error.
Button input from operator is not necessary
Signal
Magnetic field
Pipe / Cable
Signal
Magnetic field
Pipe / Cable
Receiving level
Pipe / Cable
High
Low
V
n
Differential coil
V
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