NDIR Gas Analyzers

Measurement of the concentration of 1 to 5 components

The Fuji Electric extractive multigas analyser range consists of non-dispersive 5-gas infrared analyzers. They allow simultaneous and continuous measurement by extraction of 1 to 5 gases from:

  • CO, CO2, NOx, SO2, CH4 and N2O by single or double beam NDIR technology
  • O2 by paramagnetic, Zirconia or electrochemical technology

Features and Benefits

  • Simple maintenance thanks to self-diagnostic functions
  • Good precision and excellent stability of the measurement over time
  • Large backlit display
  • Automatic zero and span calibration
  • Correction with oxygen
  • Modbus® protocol digital link
  • Large scale dynamics (1 to 20 configurable)

Detection principle

The mass flow meter determines the amount of infrared light absorbed by the measuring cell.
Mass flow meter:

  • It converts the absorption of infrared light into an electrical signal.
  • Excellent resistance to interference thanks to the low impedance sensor.
  • The absence of moving parts makes the analyzer particularly resistant to vibrations.

ZKJ – 5 components analyser – NDIR dual beam

CO2  –  CO  –  CH4  –  NOX  –  SO2  –  O2  –  NO  –  N2O

Ideal for controlling polluting emissions

Uses a highly sensitive mass flow meter as a detector.

Simultaneous and continuous measurement of 5 gases :

Characteristics :

  • The reference cell of the double beam principle offers excellent performance
  • Low scales from 0-20 ppm
  • Excellent zero point stability: ± 1% FS per week
  • Integrated interference detectors help reduce cross interference optimally
  • Clean and intuitive interface with advanced diagnostic and calibration features

Measuring principle:

  • NOx, SO2, CO, CO2, CH4, NO: Non-dispersive infrared absorption method.
  • O2: Paramagnetic or electrochemical method (measuring element incorporated in the analyzer) or zirconia method (external analyzer type ZFK7)

ZRE – 5 gas NDIR analyser – Single beam

CO2  –  CO  –  CH4  –  NOX  –  SO2  –  O2  –  NO  –  N2O

Compact and easy to use

  • Excellent stability over time
  • No influence of humidity on the measurement
  • Automatic calibration, communication and alarms

Simultaneous and continuous measurement of the concentration of 5 gases:

Characteristics :

  • Simultaneous and continuous measurement of one to five components
  • Possibility for the user to select two scopes for each component and to modify them freely
  • Simple internal structure for easy maintenance
  • Compact and lightweight: 483 (W) × 133 (H) × 418 (D) mm, 8 kg
  • Complete range of O2 measurement technologies: electrochemical, paramagnetic or zirconia

Measuring principle:

The amount of infrared radiation absorbed in the measuring cell is detected with a micro mass flowmeter. The low impedance micro mass flowmeter has excellent interference immunity, and the sensor, without moving part, is insensitive to vibrations.

Measuring components and ranges

Type ZRE ZKJ
Model ZRE - 5 components analyser - NDIR single beam technology ZKJ - 5 components gas analyser
Range Minimum range Maximum range
NO 0-200ppm 0-5000ppm
SO2 0-200ppm 0-10 vol%
CO2 0-100ppm 0-100 vol%
CO 0-200ppm 0-100 vol%
CH4 0-500ppm 0-100 vol%
N2O _ _
O2 (electrochemical) 0-10 vol% 0-25 vol%
O2 (paramagnetic) 0-10 vol% 0-25 vol%
O2 (external analyser) 0-5 vol% 0-25 vol%

Infrared Gas Analyzer High Performance Model (ZPB Series)

Infrared Gas Analyzer Low-Concentration Measurement Model (ZPG Series)

Paramagnetic Oxygen Analyzer (ZKG Series)