The HZ-4000 underground cable fault detector can accurately locate and measure the buried depth of underground pipelines, cables, and optical cables without excavation, and accurately find the location of the damaged point of the outer anti-corrosion layer of the underground pipeline and the fault point of the buried cable. and is suitable for various underground The detection and inspection of metal pipelines, pipeline management and maintenance, municipal planning and construction, power supply and other departments are the necessary instruments for pipeline maintenance units. ■ Transmitter: three connection modes: inductive connection, direct connection and clamp connection; suitable for different occasions. ■ The receiver functions detecting the position,path, depth and tube current of underground pipes and cables. ■ Left and right positioning arrows indicate the target pipeline position fast and accurately; front and rear arrows and dB value indicates the point and size of the coating damage ■ Backlight suitable for urgent use in the nighttime. ■ Unique feature ofHZ-4000 : locating the breakdown points (pipeline breakdowns refer to the coating damaged points while electric cable breakdowns refer to the outer layer damages ); detecting the insulation damages of underground pipeline and cable. ■ Measuring the current of the pipeline and cable applied by the transmitter. ■ Multimeter function: measure the output voltage, line voltage, line current, impedance and power; Test the cable continuity and insulation quality before and after cable fault finding. ■ External induction clamp: suitable for testing the cable when they cannot be directly applied to the signal of the place.