Flame ionisation detectors for inspecting underground gas lines

The PORTAFID® M3K portable gas detector is the perfect tool for above-ground inspections of underground gas lines. It is reliable and highly accurate, resistant to interference from moisture and only responds selectively to hydrocarbons. The PORTAFID® M3K features an 0.4 l fuel gas bottle, which is carried separately on the user's back.


  • Automatic ignition on switch-on/manual re-ignition
  • Automatic zero point setting
  • Linear display from 0 - 10,000 ppm
  • Adjustable alarm threshold
  • Automatic alarm activation
  • Volume flow and flame monitor
  • 2-step pressure regulator with high pressure stability
  • Remaining operating time displayed
  • Adjustment options of 10, 100, 1,000 or 10,000 ppm methane
  • Measurement values can be output using RS-232C interface (connection option for PC, GPS and leak plotter systems, Sewerin software)
  • Illuminated liquid crystal display
  • Analogue and digital measurement display
  • Automatic and manual measuring range changeover
  • Slider for displaying maximum concentration
  • Operating time (rechargeable battery) with pump running, eight hours
  • Fully charged within 2.5 hours