Utility Line Location

Leak Detection Brentwood La Canada Flintridge Arcadia, CA

Leak Detection Brentwood La Canada Flintridge Arcadia,CA

Southern California's Source For Leak Detection And Property Inspection

Non-Destructive Testing

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Utility Line Location

The cable detection system consists of a signal generator for live lines and a transmitter for electrically dead lines as well as a receiver.
Signal generator and transmitter feed high-frequency electromagnetic signals into the line to be tested. Along the line, these signals are converted into acoustical and optical signals by the receiver.
The signal strength is a measure for the location of the line.
Two basic operating modes are to be distinguished hereby:

1 ) Closed-circuit mode :
In this mode, live lines are tested with a potential of a maximum of 300 V to ground.
The signal current of the signal generator, for example, is fed into the phase of the line to be tested and flows back to the signal generator through neutral conductor across the transformer.
This "two-pole" application corresponds to a closed circuit, whereby the energy for the generation of the signals is directly derived from the system. In the case of a shorted line, the current flow in the circuit to be measured is interrupted, a 9-V battery can, for example, be connected into the measuring circuit as a substitute power supply.
The receiver evaluates the magnetic component of the signal.

2) Open-circuit mode :
In this operating mode, only electrically dead lines may be tested.
One output of the transmitter is connected to the line to be tested, the second output to ground.
This "single-pole" application corresponds to the principle of a radio transmitter.
The connected line hereby becomes the antenna of the transmitter, the ground serves as reference potential.
The energy for the generation of the signals is provided by the internal battery.
The receiver evaluates the electrical component of the signal.

2.1 Receiver R300
The receiver R300 has two built-in detectors which receive the different signals from the signal generator for live and electrically dead lines. These signals are indicated both optically and acoustically:
Optically by a diode assembly with which up to 10 diodes light as a function of the signal strength.
A red filter permits reading also in the case of direct incidence of sunlight.
Acoustically by a sound generator.

2.2 Signal

Cable Detection and Avoidance

Buried Utilities and cables represent a major hazard to any construction worker. Obtaining accurate information about the location of the various installed services pipes, cables and utilities under the ground is a necessity before starting any excavations. It is the full responsibility of every company or person to verify the drawings from the utilities and avoid damaging existing services, pipes and cables.

Survey Systems Ltd supply a wide range of cable detection products from leading manufacturers such as Leica, C-Scope and Radiodetection. By clicking on the links above you can view the full range of cable detection equipment and also buy or hire the cable detection equipment.

Via receiving reradiated radio frequencies through internal aerials, detecting the strength and direction of the received signals, the operator is given the location and direction of the underground service, pipes and cables. Mark the location of the service, pipes and cables on the surface of the ground, giving the excavation team clear indications of where not to dig.

Default Power mode selection when turned on, for safety
Fully automatic sensitivity setting, no adjustments needed
Audio and visual display of signal reception
Digital signal processing – robust and error free location in the construction environment
Easy to use – requires only minimal training
Large push button operation – speed of use in field conditions
Robust and waterproof – designed for tough working conditions
Always starts in power mode at maximum sensitivity – ensures safest operating conditions
8 and 33 kHz tracing modes – maximum flexibility
Compact and lightweight
Highly visible digital LED display

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