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Budget-Friendly, Feature-Filled Combustion Analyzer

Fyrite® InTech™ - Residential Combustion Gas Analyzers

The Fyrite® InTech® residential combustion analyzer is a next generation redesign of our popular Tech 50/60, developed on the proven INSIGHT® platform to include more features with a lower cost of ownership. It provides rugged, reliable, long-running performance in a light, handheld unit - offering service technicians the easiest and most affordable way to gain the benefits of electronic-combustion testing.

B-Smart® pre-calibrated CO sensors (0-2,000 ppm), 6 pre-programmed fuels including propane (10 for EU version), and a high-contrast graphic display, with backlighting and adjutable font size, make the Fyrite® InTech® a feature-packed, easy-to-use instrument. The InTech® is capable of storing up to 10 complete records internally and can output an unlimited number of records via an infrared printer with the optional reporting kit.

Fyrite® InTech® Reporting Kit:

  • CO, O2
  • Includes printer, rubber boot, probe, 8 AA batteries, hard-carry case, USB cable, Fyrite® User Software, spare filters

Fyrite® InTech® Features:

  • High-contrast, backlit LCD display
  • Combustion and efficiency analyzer - 6 pre-programmed fuels (10 for EU version)
  • Direct measurement of O2, CO (0-2,000 ppm), stack, combustion air and ambient temperatures
  • Calculated measurement of combustion efficiency CO2, CO (air-free) and excess air
  • Easy access to sensors
  • New B-Smart® technology for in-field pre-calibrated sensor replacement
  • O2 and sensor life indicator
  • Calibration reminders
  • Fyrite® User Software (PC) and reporting package (optional)
  • Customize printed reports with your company name and logo
  • Software updates
  • Internal storage for up to 10 complete test records
  • Print unlimited records via optional wireless printer
  • NEW! High CO Shut-Off/Protection feature to prevent over-range exposure and promote longer sensor life.
  • Measures and stores combuston air temperature for combustion calculations.


  • Measurement Ranges:
    • Ambient Temperature: 23° F to 113° F (-5° C to 45° C)
    • Flue Gas Temperature: -4° F to 1,202° F (-20° C to 650° C)
    • Oxygen (O2): 0.0% to 20.9%
    • Carbon Monoxide (CO): 0 - 2,000 ppm
  • Calculated Ranges:
    • Combustion Efficiency: 0.1 to 100%
    • Carbon Dioxide (CO2): 0.1 to a fuel dependent maximum (in %)
    • Carbon Monoxide (Air-Free): 0 to 9,999 ppm
    • Excess Air 0 to 250%
  • Selectable Fuels:
    • 6 pre-programmed: Natural Gas, Oil #2, Oil #6, Kerosene, B5,
      and propane/LPG | (10 fuels available with Siegert version)
  • Data Capacity: Up to 10 complete records, internal storage
  • Dimensions: 8.0"h x 3.6"w x 2.3"d (20.3 cm x 9.1 cm x 5.8 cm)
  • Weight: 16 oz. with batteries (0.45 kg)
  • Power: 4 AA alkaline batteries (included)
  • Run Time: Minimum 20 hours, typical battery life
  • Approvals: EN 50270, CE mark, EN 50379
  • Warranty: Instrument, CO and O2 sensors - 2 Years
  • Display Languages Available**: English, French, Spanish, Polish, German, Italian, Dutch, Danish (**depending on configuration)

Ordering Information

Part NumberDescription
0024-8511Fyrite® InTech® (CO, O2 , includes probe, 4 AA batteries, soft-carry case)
0024-8523Fyrite® InTech® Kit - without printer (CO, O2 , includes rubber boot, probe,
4 AA batteries, hard-carry case)
0024-8512Fyrite® InTech® Reporting Kit - (CO, O2, includes printer, rubber boot, probe, 8
AA batteries, hard-carry case, USB cable, Fyrite® User Software, spare filters)
0024-8513 Fyrite® InTech® Siegert Model* (CO, O2 , Includes probe, 4 AA batteries,
soft-carry case)
0024-8514 Fyrite® InTech® Reporting Kit Siegert Model* - (CO, O2 , includes printer,
rubber boot, probe, 8 AA batteries, hard-carry case, USB cable, Fyrite® User
Software, spare filters)
* European based calculations.

Replacement Parts & Accessories

Part NumberDescription
0024-1400 IrDA Printer w/ Disposable Batteries
0024-1310 Printer Paper (5 rolls)
0024-1461 Protective Boot with Magnet
0024-0865 Hard Carrying Case
0024-1505 NOx Filter Kit
0019-3265 Replacement Water Trap/ Filter Assembly (for Probe Assembly)
0007-1644 Replacement Filters for Water Trap (package of 3)