Measuring Principles

Measuring principles applied to analyzers and measuring instruments

HORIBA offers a variety of analyzers and instruments based on technologies including our proprietary methods and existing principles as optimal solutions to help customers solve problems through the measurement of gases, particles (airborne soot and dust), temperature, glosses, and radiation.

This section introduces the principles applied to typical analyzers and instruments in simple terms, including the structure and operation of the analyzers.

Measuring Principle of Continuous Gas Analyzer

Non-Dispersive Infrared Absorption Method (NDIR)

Measurement method for various gases such as SO2, NOx, CO, CO2, CH4, N2O, etc.

Non-Dispersive Ultraviolet Absorption Method (NDUV)

Ozone (O3) specific measurement method

Ultraviolet Fluorescence Method (UVF)

Specialized measurement method for sulfur dioxide (SO2)


Chemiluminescence Method

Specialized measurement method for NO,NO2,NOx,NH3

Flame Ionization Detector Method (FID)

Specialized measurement method for  THC,NMHC,CH4

Thermal Conductivity Detector Method (TCD)

Specialized measurement method for hydrogen(H2

Measurement Methods for Oxygen

Five typical methods for measuring oxygen (O2)

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