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The Nova 352 Series Portable Flue Gas Analyzer has been designed for accuracy, reliability, ease of use and ease of service. It uses customer replaceable sensors which respond quickly to the oxygen (O2),  carbon monoxide (CO) and combustibles present in the flue gas sample. The sensor life expectancy is between 3 and 4 years.

In operation, a built in sample pump draws in the flue gas sample through the stainless steel probe, 12 ft. (4 m) sample hose, condensate removal filter, secondary filter, flow meter, then on to the O2, CO and combustibles sensors. The detected gases are displayed on LCD digital meters which have a switchable backlight for use in dark areas. A built in air makeup system ensures that the combustibles detector will always have sufficient O2 for proper operation regardless of sample O2 content.

A rechargeable battery provides enough power for about 6 hours of continuous operation and the analyzer can be used while it is being recharged. A red LED tells when to recharge and a green LED verifies that it is receiving recharging power. The recharger is included.

The Nova 352T indicates stack temperature for doing fuel efficiency calculations. The temperature sensor is built into the sampling probe. Efficiency charts for each fuel are provided
Unit of Measure


N/A Catalytic oxidation detector for combustibles; expected life is 3-4 years for each Customer replaceable electrochemical O2 and CO sensors


N/A 0-1800°F or 0-1000 °C stach temperature (Model 352T) 0-2000PPM and 4.00% CO (switch selectable) 0-25.0% O2 0-5.0% or 0-10.0% combustibles


N/A 0.1% O2, CO and combustibles


N/A ±1% full scale, based on 20.9% O2; ± 2% of full scale combustibles


N/A <2% full scale per 8 hours of continuous operation


N/A 5-8 seconds for O2; 20-30 seconds for combustibles


N/A 0 to 40.5 ºC32 to 105 ºF


N/A ±1% full scale O2 and CO; ±2% of full scale combustibles


N/A Suitcase (K): 14" L x 10 1/2" W x 6" H @ 12 lbs (36 x 27 x 15 cm @ 5.5 kg) Weather Proof (WP) Case: 10" L x 7 1/2" H x 8" W @ 8 lbs (25 x 19 x 20 cm @ 3.6 kg)


N/A AC/DC Operation, 115 VAC, 60 Hz for recharging (Other voltages available)


N/A 4-20 mA or 0-1 VDC


N/A The 352 Series should not be used for detecting these gases in ambient atmospheres for personnel safety purposes.

All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.


N/A Flue Gas or Emissions


N/A Steel Making


    Analysis of oxygen (O2), carbon dioxide (CO) and combustibles. For checking the combustion efficiency, and burner & control performance of furnaces, heaters, and boilers. May be used in commercial, industrial, and residential settings.


  • Rugged design that is easy to operate and maintain
  • Fast warm-up and response
  • Long-life catalytic combustibles sensor
  • Long-life electrochemical O2 and CO sensors
  • Digital readout meters with backlight
  • Rechargeable battery operation
  • Built in sample pump, filter and flow meter
  • Active condensate removal
  • Stainless steel probe with sample hose
  • Use on flue gas from any fuel
  • Pays for itself in months through fuel savings
  • Weatherproof cabinet is standard


  • Recorder outputs of 0-1 V or 4-20 mA (can be isolated)
  • Stack temperature readout (Model 352T)
  • High temperature probes
  • Sample pre-cooler
  • Suitcase (K) style cabinet available
  • Detachable/portable data logger


  • On air for O2 span and CO and combustibles zero.
  • On analyzed mixture of carbon monoxide (CO) and methane (CH4) in nitrogen (N2) for combustibles and CO span and O2 zero.

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