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Add the 255 Combustion Analyser to your store or catalog  
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OFTEC and HETAS Engineers favourite analyser
Features
  • Rotary switch for ease of use
  • Infra-red output to the optional printer
  • Data hold
  • Internal memory
  • Long life sensors

Specifications

Ambient Operating Range

  • ± 0° to ± 40° C / 32° to 104° F
  • 10 to 90 % RH, Non-Condensing

Battery Life

  • > 8 Hours Using Alkaline AA Cells
  • 4 AA Cells

Charger (Optional)

  • 100 VAC / 220 VAC Nominal for NMiH Batteries Only
  • 12 V in Vehicle Charger, for NiMH Batteries Only

Flue Gas Measurement Accuracy

  • Carbon Dioxide: ± 0.3 % Volume
  • Carbon Monoxide (For 0-60 ppm Range): ± 3 ppm
  • Carbon Monoxide (For 61-2,000 ppm Nom Range): ± 5 % of Reading
  • CO / CO₂ Ratio: ± 5 % of Reading
  • Efficiency (Net or Gross), Efficiency High (C): ± 1.0 % of Reading
  • Excess Air: ± 0.2 % of Reading
  • Oxygen: ± 0.3 %

Flue Gas Measurement Range

  • Carbon Dioxide: 0 - 20 %
  • Carbon Monoxide: 0 - 60 ppm
  • Carbon Monoxide: 4,000 ppm, Max.
  • Carbon Monoxide: 61 - 2,000 ppm Nom
  • CO / CO₂ Ratio: 0 - 0.999
  • Efficiency (Net or Gross): 0 - 99.9 %
  • Efficiency High (C): 0 - 119.9 %
  • Excess Air: 0 - 250 %
  • Oxygen: 0 - 21 %

Flue Gas Measurement Resolution

  • Carbon Monoxide: 1 ppm
  • CO / CO₂ Ratio: 0.0001
  • Oxygen, Carbon Dioxide, Efficiency (Net or Gross), Efficiency High (C), Excess Air: 0.1 %

Pre-Programmed Fuels

  • Natural Gas, Light Oil, Propane, Butane, LPG, Wood Pellets

Sensor, Probe

  • L300 mm / 11.8" x Dia 6 mm / 0.25" with 200 mm / 7.8" Long Stainless Steel Shaft, Typical K Thermocouple & 3 M / 6 feet Long Neoprene Hose

Storage Capacity

  • 20 Sets of Test Results in Volatile Memory

Temperature Measurment Accuracy

  • Flue Temperature, Inlet Temperature (External Sensor): ± 2.0° C ± 0.3 % of Reading
  • Inlet Temperature (Internal Sensor): ± 1.0° C ± 0.3 % of Reading

Temperature Measurment Range

  • Flue Temperature, Inlet Temperature (External Sensor): 0° to 600° C
  • Inlet Temperature (Internal Sensor): 0° to 50° C

Temperature Measurment Resolution

  • Flue Temperature, Inlet Temperature (Internal & External Sensor): 0.1° C
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