Product Overview

The Mitech MTH-7D Digital DC Spark Leak Detector is a professional-grade inspection tool designed for fast and accurate detection of defects in anti-corrosion coatings. Whether you're working on pipelines, tanks, cables, or ship hulls, this portable device identifies pinholes, cracks, and weak spots by generating a visible spark and audible alarm at the flaw location.

Engineered for on-site operations, the MTH-7D is powered by a 12V high-capacity battery pack, eliminating dependence on fixed power sources. Its intuitive controls, adjustable high-voltage output, and real-time LCD feedback make it a go-to solution for industrial maintenance and coating inspection.

Key Features

• Wide Detection Range: Suitable for coating thicknesses from 0.05 to 10 mm.
  
  

• Adjustable Output Voltage: Ranges from 0.2 kV to 30 kV (±5%), adaptable to different coatings.
  
  

• Battery-Powered Mobility: Operates on 12V DC, perfect for remote and field applications.
  
  

• LCD Display: View real-time voltage output for precise monitoring.
  
  

• Flexible Probes: Comes with two standard probes; customizable for specific needs.
  
  

• User-Friendly Design: Lightweight, compact, and simple to operate with low power consumption.
  
  

Applications

• Coating inspection on:
  
  

• Oil & gas pipelines
  
  

• Glass-lined equipment
  
  

• Epoxy, rubber, and enamel coatings
  
  

• Cable sheathing
  
  

• Metal casting pipes and ship hulls
  
  

Technical Specifications

Working Principle

By applying a high-voltage pulse to the anti-corrosive coating, the MTH-7D detects flaws where the voltage breaks through, causing a spark and triggering audio/visual alarms. This allows for precise pinpointing of coating integrity issues.

Usage Conditions

• Operate in dry, clean environments.
  
  

• Avoid exposure to moisture or corrosive gases.
  
  

• Ensure proper grounding during use.
  
  

Safety & Maintenance Notes

• Do not use while charging.
  
  

• Keep probe and tested surface dry and clean.
  
  

• Avoid probe contact with grounded surfaces.
  
  

• Select proper probe type and maintain optimal spacing during inspection.
  
  

Downloads

PDF Specification Sheet - Download