The Digiphone is a directional acoustic listening device for the pinpointing of flash-over faults on power cables. State-of-the-art technology and ease of handling enables even users without training to locate precisly cable faults in conjunction with a surge generator (thumper).
Working Method:
The Digiphone measures the signals received by specially developed magnetic and acoustic sensors, which are integrated in one housing.
The location of the buried cable can be determined by the direction and intensity of the magnetic field, produced by the impulse current of a surge generator (thumper). With the bargraph-indicator of the Digiphone, the intensity of the strength of the magnetic field can be measured. This has a maximum directly above the cable.
The acoustic locating is done by measuring the flash-over noise. A switchable filter is built-in to optimise the measurement. The bandwidth of this filter is designed to minimise ambient noise (wind, vehicles).
A coincidence measurement is possible by receiving and indicating the signals of both sensors simultanously. Digiphone also allows measurement of the distance between the sensor and the fault resulting from the difference in time taken by the acoustic and magnetic signal.
The advantage of this method, that is not dependent on the strength of the signals, is to locate the fault, even if the cables are in ducts. Untrained operators are guided automatically to the fault by this method.
Performance Features:
Digiphone – the new acoustic listening device for pinpointing of flash-over faults on power cables:
- Lightweight receiver with carrying straps
- Handy sensor
- Excellent acoustic characteristics
- Switchable filter against ambient noise
- Auto ranging digital readout of relative distance to the fault
- Bargraph-indication of the magnetic field strength for locating the cable path
- LC-Display for clear readout
- Indication of battery condition
- High reliability by using rain-proof foil keys
- Rugged built for field operation
The delivery of Digiphone included:
- Receiver T16/910
- Sensor T16/940
- Headphones T16/960
- Operation manual
- Instrument case
- 10 pcs. Battery 1.5 V/R6/AA
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Current exibitions
