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The Nova 870 Series Analyzer System has been designed with the flexibility and robustness required in the indistrial environments that characterize the steel & metal industries.

The Nova 870 Series utilizes high-stability infrared detectors for the simultaneous measurement of CO, CO2, and CH4. In addition, the analyzer can also be supplied with a non-consumable, long-life thermal conductivity cell for H2 that is compensated for the interference effects of CO, CO2, and CH4. This ensures that H2 will always read correctly regardless of the background gas composition.  A non-depleting paramagnetic or electrochemical sensor may be used for O2 analysis.  All sensors/detectors are temperature-controlled or temperature-compensated for maximum analytical stability. 

Auto calibration functionality allows easy calibration without user intervention.  The included Serial Output Package allows connection of analyzer to personal computers via a choice of USB/RS-232/RS-485. Data recording software is also included.


Method of Detection

N/A NDIR infrared detector for CO, CO2 and CH4 Paramagnetic detector or electrochemical sensor for O2 Thermal conductivity cell for H2

Ranges Available

N/A 0-10.0%, 0-50.0%, 0-100.0% CH4 0-10.0%, 0-50.0%, 0-100.0% CO 0-10.0%, 0-50.0%, 0-100.0% CO2 0-2.0%, 0-25.0%, 0-50.0%, 0-100.0% O2 0-5.0%, 0-50.0%, 0-100.0% H2


N/A 0.1% for all gases

Accuracy & Repeatability

N/A ± 1.0-1.5% of full scale, depending on gas measured


N/A Less than 2% of full scale per month

Response Time (T-90)

N/A 20-30 seconds to 90% step change

Ambient Temperature Range

N/A 40-104 °F (4 to 40°C). Optional -22 to 158 °F (-30 to 70 °C) with Outdoor Packages


N/A ± 1.5% of full scale

Size & Weight

N/A 24" H x 24" W x 10" D @ 90 lbs (61 x 61 x 25 cm @ 20 kg). Physical data will vary depending on model and enclusure required


N/A 115 VAC 60 Hz (220 VAC 50 Hz available)

Output Options

N/A Isolated 4-20 mA standard RS232, RS485, MODBUS®, Ethernet outputs optional


N/A High and/or low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating.


For continuous monitoring of atmospheres associated with steel-making and metal-working or other industrial processes. Analysis of any combination of methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), hydrogen (H2) and oxygen (O 2). Offers a viable and more economical alternative to mass spectrometer analysis for these gases.



  • Infrared detector for reliable measurement of CO, CO2 and CH4. Detector may be cleaned in the field.
  • Thermal conductivity cell for H2
  • Oxygen analysis by choise of electrochemical or paramagnetic oxygen sensor
  • Sensors/detectors temperature controlled or compensated for maximum analytical stability
  • H2 reading is compensated for the interference effects of the other gases measured
  • High ranges on each channel available (up to 100%)
  • Touch-screen display for gas readings
  • Built-in sample pump or pressure regulator
  • Automatic calibration & serial output package
  • Isolated 4-20 mA analog recorder outputs
  • Durable stainless steel tubing & sample components
  • Automatic moisture removal system included

  • Options


  • Calculations performed on gas readings such as gas ratios and heating value of flammable gases
  • Hi/Low gas, low flow and other alarms available
  • Sample conditioning systems available for acidic gas and dust
  • Cabinet purge system available for use in hazardous areas
  • Environmental management packages for operation in extreme temperatures, out doors or in dusty environments

  • Calibration


  • Ambient air for O2 and to zero all other gases
  • Analyzed calibration gas with representative concentrations for span of all other gases

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