MRU NOVA Plus Combustion Gas Analyzer
This product has been retired.


MRU Instruments

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  • Standard O2 sensor 0 to 25%
  • CO (H2 compensated) sensor 0 to 10,000 ppm
  • Differential temperature
  • O2 referencing (normalization) to user definable
  • Emission calculations:
    • mg/m3, with calculation of NO(x)=1,05*NO and NO(x) as mg/m3 NO2
  • Complete combustion calculation using large, country specific fuel type list
  • High performance gas sampling pump
  • Condensate separator with PTFE (Teflon) coated PTFE filter
  • Docking station for remote control
  • Mini-USB interface to PC and SD-card slot
  • Internal data storage up to 16,000 measurements

The MRU NOVA Plus Combustion Gas Analyzer can simultaneously measure up to eight gas components. Its built to meet the most stringent requirements. The NOVA Plus provides fast accurate of all gas, oil and solid fuel combustion's. It's also suitable for CHP's (co-generation heat and power engines). The NOVA Plus Combustion Gas Analyzer comes standard with an O2 sensor (0 to 25%) and a CO (H2 compensated) sensor 0 to 10,000 ppm.

The NOVA Plus Emission Analyzer is built with a robust metal enclosure mounted inside an aluminum framed case. Its low weight and size make it easy to transport. The O2 long life sensor has an expected life time of 4-5 years. The NOVA Plus is provided with a built-in printer with easy paper loading. The units also measure gas/air temperature, differential pressure and stack draft.

Measuring ranges include:

  • CO; 0 to 4,000 ppm
  • CO2; single NDIR 0 to 20%, tripple NDIR 0...3% up to 30%
  • O2; 0 to 21 Vol-% abs.
  • NO; 0 to 1,000 ppm
  • NO2; 0 to 200 ppm
  • NO(x); True NOx using NO and NO2
  • SO2; 0 to 2,000 ppm
  • H2S; 0 to 200 ppm
  • C3H8; tripple NDIR Bench, 0…..2,000ppm up to 5,000 ppm
  • CH4; tripple NDIR Bench, 0…..10,000ppm up to 3%
  • Fluegas temperature; less than/equal 1,200°F (650°C), less than/equal 2,000°F (1,100°C)

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

MRU 63981 / 63982 Industrial Probe Handle
Industrial Probe handle with sampling line
MRU L-Type Pilot Tubes
L-Type Pilot Tube with or without temperature measurement


CO ranges from 0 to 40,000 ppm, for use with NOVA Plus Emission Analyzer
MRU 63937 RCU NO Sensor
For use with the NOVA Plus and AMPRO 2000, 0 to 1,000 ppm range
MRU NO2 Sensor
0 to 200ppm (over range to 1000ppm) for use with the NOVA Plus
MRU 63990 SO2 Sensor
For use with NOVA Plus Emission Analyzer, 0 to 2,000 ppm
MRU 63991 H2S Sensor
For use with NOVA Plus Emission Analyzer, 0 to 500 ppm


Please consider these optional accessories.

MRU 64618 CO2 Infrared Module
Single gas NDIR Infrared Module
MRU 65648 CO2 / CxHy Infrared Module
Dual gas NDIR CO2 / CxHy Infrared Module
MRU CO / CO2 / CxHy Infrared Module
Triple gas NDIR, CO / CO2 / CxHy Infrared Module
MRU 63866 Peltier Gas Cooler
Low energy, high efficiency Peltier Gas Cooler with condensate pump
MRU 63903 Internal Sample Flow Monitoring
Internal Sample Flow Monitoring to check internal filters, pump, hoses
MRU 64012 Triple Gas NDIR
Triple gas NDIR, CO / CO2 / CxHy Infrared Module
MRU 64198 Automatic Zeroing of Analyzer
Automatic zeroing of analyzer
MRU 65718 CO Sensor Protection
CO sensor protection using additional purging pump and CO cut off valve
MRU 65028 CO Sensor Protection
Separate CO sensor protection by Purafil filter, recommended for use at CHP engines