Infrared gas analyser - ZRE

Simultaneous, continuous measurement of gas concentration

Fields of application

Control of pollutant emissions from boilers, industrial furnaces, engines or waste incinerators.


  • Simultaneous and continuous measurement of the concentration of 5 gases:
  • Excellent stability over time
  • Compact and easy to use
  • No influence of humidity on measurement
  • Automatic calibration, communication and alarms
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This gas analyser is used to measure NO, CO2, CO, CH4, SO2 and O2. NO, CO2, CO, CH4 and SO2 gases are measured by non-dispersive infrared, while O2 is measured by the electrochemical, paramagnetic or zirconia method. It can analyse up to 4 gases plus oxygen simultaneously. For the infrared part, it uses a highly sensitive mass flow meter as detector. The single-beam photometric system ensures simplified maintenance and excellent stability over time. The analyser is particularly well suited to monitoring pollutant emissions.


Measurable componentsNO, CO2, CO, CH4, SO2 and O2
Measuring principleNon-dispersive infrared absorption method.
Single source, single beam
NO, SO2, CO2, CO, CH4
Electrochemical or paramagnetic method (measuring element incorporated intoanalyser) or zirconia method (analyser ).O2
Repeatability±0.5% of full scale
Linearity±1% of full scale
Zero drift±2% of full scale/week
Negligible when using automatic zero calibration
Scale drift±2% of full scale/week
Response time (for 90% of full scale)Electrical response :1 to 15 sec
Less than 60 seconds, including cell purge time and a flow rate of 0.5 l/min. This time depends on the number and scale of gases measured.
Power supplyVoltage100 V to 240 V AC
Scale range85 V to 264 V AC
Operating temperature-5˚C to 45˚C (40˚C for 2 optical benches at 240 V ac)
Operating humidityMax. 90% RH (non-condensing)
HousingSteel for indoor mounting
ColorFront panel: Black (DIC P 1000-F) or light gray (PANTON IC-F)
Housing: Light gray (PANTON IC-F)
Display4-digit digital display
(LED backlit LCD)
Dimensions19'' rack mount: 133 × 483 x 418mm
Panel mounting: 133 × 443 x 418mm
WeightApprox. 8 kg


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Infrared gas analyser - ZRE

Reference : ZRE