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725a Pocket Combustible Gas Leak Detector – 40ppm Sensitivity


The 725a offers 40 ppm sensitivity to detect combustible gasses including natural gas, methane, propane (LPG), diesel, and kerosene.

In stock

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Trace fuel lines, tanks and containers for gas leaks. Once a leak is detected, the 725 will sound an alarm and the red LED’s will light showing level of leak.

  • 40 ppm sensitivity
  • Trace natural gas lines and fittings for leaks
  • Check gas equipment for leaks
  • Test propane tanks, fittings, lines, and heaters for leaks
  • Check propane tanks, fitting lines, and heaters for leaks
  • Test confined spaces for gas build-up
  • Fits in shirt pocket
  • Responds instantly

Standard accessories:

  • Instruction Manual
  • Battery and Sensor (Installed and Calibrated)



Product Documentationpdf-icon1

Click below to view or download product documentation PDFs:

725A Manual

725A Data Sheet


 Model 725A Specifications
 Combustible Gasses Detected (Partial List) Methane, Natural Gas, Gasoline, Diesel, Propane (LPG), Butane, Kerosene
 Sensitivity 40 ppm (methane)
 Operating Temperature 32° to 104°F or 0° to 40°C
 Response Time Instantaneous
 Leak Indication Audio / Visual
 Battery 1.5 volt, AAA Alkaline (2 each)
 Battery Life 3 hours continuous use

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