NOVAplus Portable flue gas analyser for up to 8 gas emission measurements


For emission monitoring and combustion checking of various industrial sites.

The combination of infrared measurement technology and electrochemical sensors ensures versatility and reliable analysis even of small measuring ranges.  NOVAplus EMI – portable industrial measurement at attractive budget prices.

USB App: MRU4u

· O2 measurement: 0 - 25,00%, using new longlife O2 sensor                                    
· Gas temperature up to 800°C using stainless steel / up to 1.100°C using Inconel steel probe tubes
· Combustion air temperature: 0 - 300°C  (short plug for ambient air is included)
· Stack / Differential pressure: -100 mbar ... +100 mbar                                    
· Differential temperature mesurement                                    
· O2 referencing (normalisation) to user settable value                                    
· Emission calculations like: mg/m3, with true measurement of NO(x) = NO + NO2 and NO(x) as mg/m3 NO2                                
· Complete combustion calculation using large, country specific fuel type list                                      
· Strong, high performance  gas sampling pump for high suction sampling                                    
· Large condensate separator with PTFE (Teflon) coated PTFE filter                                    
· Docking station for remote control with wireless, inductive charging of remote control unit RCU                                
· Mini-USB interface to PC and SD-card slot for large volume data logging, incl. SD-card                                    
· Internal data storage for up to 16.000 measurements!                                    
· High energy Li-Ion battery, for up to 10 hrs operation time                                    
· Wall-plug, universal grid power supply, 100-240Vac/50-60Hz / 12V dc                                    
· Built-in speed printer with easy paper loading                                    
· Robust metal enclosure mounted inside aluminium framed case                                    
· Low weight (6,5 kg) and size W 470 x D 220 x H 300 mm, durable and easy to transport                                    
· Automatic measurement incl. data logging function                                    
· PC software *MRU4win* for data collection, measurement report, address management                                    
   * "light" * version, available in MRU download area                                    
   * "complete" * version optionally available, see page 6 under "DOCUMENTATION / DATA TRANSFER / PC SOFTWARE"                                   


3-gas NDIR bench CO/CO2/CH4

CO 2.000ppm ... 10%
CO2 0...40%
CH4 2.000ppm ... 4%

3-gas NDIR bench CO/CO2/CH4

CO 2.000ppm ... 10%
CO2 0...40%
CH4 2.000ppm ... 4%

3-Gas NDIR bench CO/CO2/C3H8

CO 2.000ppm...10%
CO2 0...40%
C3H8 2.000ppm...20.000ppm


0...1.000, overload up to 5.000 ppm



0...40,00%/100...40.000ppm (NDIR)

CO-measurement (H2 compensated)

0...10.000, overload up to 20.000ppm


CO(very high)-measurement

0...4,00, overload up to 10,00%


NO measurement (NOx calculated)

0 ... 1.000 ppm, overload up to 5.000 ppm


0...200 overload up to 1.000 ppm



0...2.000, overload up to 5.000 ppm



0...500, overload up to 2.000 ppm


Wireless remote control unit "Basic"

Wireless remote control unit "Comfort"

as an alternative to RCU "Basic"

Gas sampling probe handle Type F

for exchangeable tubes

Heated gas sampling probe head

incl. heated sampling line, 3m or 5m long

Exchangeable probe tube Type F, 180 or 300mm

from 300 mm up to 2.000 mm length

Heat deflector shield

Ø 150mm for Ø 10mm tubes

Automatic soot measurement

incl. soot probe with heated probe handle

Gas cooler

Thermoelectrical gas cooler, with dual heat exchanger and constant +4 °C dewpoint

Active VENT port with forced sample gas ventilation

via internal pump


Additional compartment Nplus

attachable to standard case (B 470 x H 120 x T 220 mm)

Pre-filter for high concentrations of dirt

for all unheated probes

Combustion air temperature probe, 300 mm

w/ PTFE cone and 2,7m cable

Stack draft probe

250/8 mm with 3m silicone hose

Detector probe

  • Detector probe for fast leakage detection
  • 1,95 m cable and flex. goose neck
  • adaptable to all AUX sockets

Sensor for HC leakage detection

adaptable to detector probe (plug and play)

Sensor for spillage test

Pitot tube, L-type, with temperature measurement

100 x Ø 3mm

Pitot tube, S-type, with temperature measurement

500 x Ø 8mm, with 28mm protection tube,
TIG welding for 0...1.000° operating temperature

CO-sensor protection by purafil filter

recommended for use at CHP engines

CO-sensor protection by separate purging pump

required if both, CO regular and CO high or very high, are installed

Technical Data
Measuring range
O2 0 ... 25,00 %
CO (H2 compensated) 0 ... 10.000 ppm* overload up to 20.000 ppm (option)
CO low 0...300 ppm
NO 0...1.000 ppm
NO low 0...300 ppm
NO2 0...200 ppm
NO2 low 0...300 ppm (with 0,1 ppm resolution)
NO(x) 0 ... 1.000 ppm* overload up to 5.000 ppm (option)
SO2 0.2.000 ppm
SO2 low 0...300 ppm (with 0,1 ppm resolution)
H2S 0...500 ppm
H2S low 0...300 ppm (with 0,1 ppm resolution)
Differential pressure at basic unit ± 100hPa, at remote control ± 200hPa
Fluegas temperature 0 ... 800°C (stainless steel tube) 0 ... 1.100°C (inconeltube)
Relative humidity 3 ... 98 %
External temperature sensor K-type standard
Calculated values
Dew point calculated °C
Losses 0 ...99,9 %
Excess air
Combustion efficiency
Dimensions and other data
Gas conditioning illuminated condensate trap, alternatively gas cooler
Sample gas flow monitoring optional, standard with soot measurement
Soot measurement optionally available as built-in feature
Operating temperature + 5 ... + 45 °C, max. 95 % RF, non condensing
Power supply Wall-plug grid power supply, 100 – 240 Vac / 50 ... 60 Hz, 12 V DC/5A
Battery capacity basic unit up to 10 hours resp. with gas cooler up to 6 hours / remote control up to 30 hours
Weight 7,4 kg with 2 sensors, probe, power supply, case
Dimensions 470x314x235 mm (HxWxD)
TÜV approval By RgG 296
Data storage internally 1MB or externally 2 GB
Data transfer via USB cable, optionally via Bluetooth
PC-interface mini-USB, optionally Bluetooth
Display 3,5" TFT colour display