Kane 255 Combustion Analyser



  • Ideal for engineers who install/service Oil or Gas boilers.
  • Measures: CO, CO2 & Temperature.
  • Calculates: O2, CO/CO2 Ratio & Efficiency.
  • A truly versatile and cost effective option.
(Size: 435.3 KB)
(Size: 696.8 KB)
More Information
Warranty6 years
Price MatchNo

The Kane 255 has been discontinued and replaced with the Kane 258.

The Kane 255 Combustion Analyser measures carbon dioxide (CO2), carbon monoxide (CO) and flue temperature. It also calculates oxygen (O2), CO/CO2, ratio, losses, combustion efficiency (Nett, Gross or Condensing) and excess air.

A useful feature for when a CO Alarm is triggered, is that the Kane 255 Combustion Analyser's CO sensor checks CO levels in ambient air. Reading in ppm or mg/m3, the CO reading can be referenced to the oxygen.

The Kane 255 is supplied with a flue probe with integral temperature sensor and also has a protective rubber cover with integral magnet for hands-free operation.

The large display shows two readings at a time. An optional infrared printer is also available for which all data can be printed on. The printed data can be 'live' data, 'frozen data' or stored data. Twenty sets of tests can be stored. Two lines of sixteen characters can be added to the header of printouts.

The Kane 255 Combustion Analyser is controlled using just four buttons and a rotary dial.

  • Function Buttons x 4
  • Rotary Switch
  • Battery Charging Indicator
  • Temp & Pressure Connections
  • Flue Gas Inlet
  • Water Trap
  • Particle Filter


Temp Measurment
Flue Temperature0-600°C0.1°C±2°C
±0.3% reading
Inlet Temperature
(Internal Sensor)
±0.3% reading
Inlet Temperature
(External Sensor)
±0.3% reading
Flue Gas Measurement
Carbon Monoxide
(H2 compensated)
21-2,000ppm nom
4,000ppm max for 15 mins
±5% of reading
Carbon Dioxide*10-20%0.1%±0.3% volume
Efficiency (Net or Gross)*20-99.9%0.1%±1.0% reading
Efficiency High (C)*20-119.9%0.1%±1.0% reading
Excess Air*20-250%0.1%±0.2% reading
CO/CO2 ratio*20-0.9990.0001±5% reading

*1 Using dry gases at STP
*2 Calculated

Pre-programme fuelsNatural gas, Light Oil, Propane, Butane, LPG, Wood Pellets.
Weight1kg / 2.2lb
Handset200mm / 7.9" x 45mm / 1.8" x 90mm / 3.5"
ProbeL300mm / 11.8" x Dia 6mm / 0.25" with 200mm / 7.8" long stainless steel shaft, type K thermocouple and 3m / 6ft long neoprene hose
Ambient Operating Range±0°C to ±40°C / 32-104°F
10% to 90% RH non-condensing
Storage Capacity20 sets of test results in volatile memory
Battery Life4AA cells
> 8 hours using Alkaline AA cells
Charger (optional)110Vac/220 Vac nominal for NMiH batteries only
12V in vehicle charger for NMiH batteries only

What's Included

Calibration report

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