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vLoc3-DM Pipeline Coating Fault Detector

Technical datasheet · ACVG / DCVG coating condition survey

vLoc3-DM Pipeline Coating Fault Detector
Technical Datasheet

Overview

A third-generation coating integrity detector for oil and gas pipelines. It pinpoints coating defects on transmission and distribution pipelines and, with the A-frame accessory, performs ACVG surveys. The low-frequency optimised 2D antenna array stays accurate in distorted signal conditions, every reading is recorded with GPS coordinates, and faults are mapped as you walk the line — with real-time current and ACVG curves displayed on screen.

  • Real-time colour display with intelligent coating-defect identification
  • Colour-coded signal distortion indication — trust every reading
  • Built-in Bluetooth and GPS with automatic data logging
  • High-precision automatic depth and compass bearing display
  • Cloud data access and mobile app for downloads and firmware upgrades

Key specifications

Survey technologiesACVG (with A-frame) · DCVG · current attenuation
Effective range0 – 30 m depth on traversable pipelines
Transmitter output4 A single-phase · 3 A three-phase signal
Grounding requirementLow — works on dry soil, asphalt and concrete
CrossingsSurveys across rivers, lakes, railways and roads
Current logging3 Hz + 128 Hz dual-frequency current, simultaneous
Measurement intervalsCurrent points every 30 – 50 m · A-frame points every 10 – 20 m
Data displayReal-time current curves and real-time ACVG curves
Internal memory50,000,000 records · GPS coordinates with date and time stamps
Export formatsxls · txt · csv — ready for GIS integration
AntennaLow-frequency optimised 2D array · omni-directional array · detachable LF sonde support
PowerAlkaline approx. 12 h · Li-ion approx. 27 h field use
ProtectionIP65 · NEMA 4
PortsUSB (data-log download, firmware upgrade) · A-frame port

Typical applications

  • New pipeline coating acceptance (as-built QC)
  • Rapid coating fault finding and pinpointing
  • Segmented coating insulation assessment
  • Casing and mechanical damage checks
  • Weld-joint and repair-quality inspection
  • Cathodic-protection shielding evaluation
  • Route mapping and soil-depth measurement on trunk lines

Specifications sourced from the manufacturer's product literature and subject to change without notice. Contact us for the latest revision or a quotation tailored to your project.

Need this instrument?

Tell us your site conditions — we will confirm the configuration.

Send the target type, depth range and ground conditions. Chiyu engineers reply with a recommended configuration within one working day.