Cable locator HZ-4000C

underground pipepipeGPS

The HZ-4000C is a portable underground cable and pipeline locator designed to trace routes, measure burial depth and pinpoint coating or insulation faults without excavation. It is intended for pipeline maintenance teams, municipal planners, power utilities and network maintenance professionals.
Key features

• Transmitter connection modes: inductive, direct and clamp connections to suit different field conditions.
• Receiver functions: detects route, horizontal position, burial depth and induced current on pipelines and cables.
• Guidance indicators: left/right arrows for rapid horizontal positioning; front/back arrows and dB readings to identify coating-damage points and estimate severity.
• Backlight for night or low-light operation.
• Optional GPS geolocation with automatic pipeline mapping; optional professional data-analysis software for automated detection reports.
• Fault locating capability: distinguishes coating/outer-layer damage and detects insulation faults on buried pipelines and cables.
• Built-in multimeter functions: measures output voltage, line voltage, line current, impedance and power; continuity and insulation checks before and after fault location.
• External induction clamp available for signal injection when direct connection is not possible.
• High location accuracy through multiple positioning modes (valley, peak, broad peak, peak-arrow) and cross-verification methods for horizontal and vertical components.
• Depth measurement: double-level coil direct reading, single-level coil 80%/50% methods and 45 method for mutually verifiable results.
• Strong anti-interference design: multiple observation parameters (horizontal component, vertical component, horizontal gradient), high adjustable transmitter power up to 10 W and multiple working frequencies.
• Easy operation: graphical display for continuous real-time visualization; automatic switching to two-level antenna mode and sensitivity adjustment during depth measurement.
• Power and autonomy: large-capacity lithium batteries in transmitter and receiver for a full working day; AC/DC adapter support to continue operation when batteries are low.

Technical specifications

• Model: HZ-4000C (series variants A, B, C, D, E).
• Transmitter frequencies (examples): 128 Hz, 512 Hz, 1 kHz, 2 kHz, 8 kHz, 33 kHz, 65 kHz, 83 kHz (availability depends on model).
• Receiver passive/fixed frequencies: radio, 50 Hz, 100 Hz plus the selectable active frequencies above.
• Transmitter output power: up to 10 W, continuously adjustable.
• Location depth: typically up to 6 m depending on model, frequency, soil and target conditions (some models indicate 3 m in specific modes).
• Models/features overview: A/B/C/D/E variants with differing active location frequency counts, passive frequency support, mains filter presence, fault-detection timing and data-storage capabilities.
• Battery: rechargeable lithium packs; full recharge supports a typical day of outdoor use.
• Optional features: GPS mapping, professional analysis software, data storage on selected models, external induction clamp accessory.