English
42
C.A 6681 Cable Locater
1. PRESENTATION
The LOCAT
NG cable detector is intended for the detection of
telecommunications cables, electric power supply cables, and even pipes, during
modification or maintenance work on installations of category III (or lower) at
voltages of 300V (or less) with respect to earth.
The LOCAT NG cable detector is a portable device comprising a transmitter, a
receiver, and a few accessories.
The transmitter and the receiver have large back-lit LCD display units and large
keys.
The transmitter applies to the circuit that is to be located an AC voltage modulated
by digital signals, which creates a proportional alternating electric field.
The transmitter is also an AC/DC voltmeter; the display of the measured voltage is
accompanied by a symbol warning of the presence of a voltage. The transmitter
also has a self-test function, indicating good transmission between transmitter and
receiver.
The receiver has a sensitive sensor that generates a display proportional to the
electric field detected. The variations of this signal, after decoding, processing,
and shaping, allow detection of the positions of underground cables and pipes,
and of faults in them.
In addition to a display on the LCD screen, the receiver has a buzzer that changes
pitch as a function of the strength of the signal detected.
Fig.1
