Biogas composition analysis systems and landfill gas analyser are a critical component of industries like landfill gas power plant, wastewater treatment, waste management, biomass fuel production or agriculture. By monitoring specific components such as methane, hydrogen, sulfide, carbon dioxide or oxygen, they help guarantee the quality of the biogas and biomethane while ensuring compliance with environmental regulations and landfill gas monitoring guidelines.
The Fuji Electric ZPAF biogas analyser continuously and simultaneously measures the 4 main components of biogas and landfill gas:
Methane (CH4)
Carbon dioxide (CO2)
Oxygen (O2)
Hydrogen sulfide (H2S)
This analyser is unique on the market thanks to its design and performance:
Simple maintenance
Digital link
Good precision
excellent stability
The Fuji Electric ZPAF Biogas Analyser measures the biogas components with the ranges shown in the following table:
CH4 (Methane) - Measurement ranges:
CO2 (Carbon Dioxide) - Measurement ranges:
H2S (Hydrogen Sulfide) - Measurement ranges:
O2 (Oxygen) - Measurement ranges:
The single-beam NDIR principle is based on the specific absorption of gases in the infrared, enabling precise measurements within specified ranges.
This method uses a special electrode that reacts selectively with hydrogen sulfide, providing an accurate measurement with a long service life.
The electrochemical cell measures oxygen by reacting with a specific electrolyte, offering a reliable solution for applications requiring precise oxygen detection.
The Fuji Electric ZPAF biogas analyser has the following technical specifications and metrological performances, making it an indispensable measurement and control instrument for biogas plants.
These specifications testify to the stability and accuracy of the analyser, ensuring reliable measurements even under changing conditions.
The rapid response of the analyser guarantees near-instantaneous detection of changes in gas composition, which is crucial for sensitive applications.
This variety of input/output and communication options allows easy integration with other systems and precise control according to specific needs.
The clear, backlit display provides real-time information, making data easy to read even in poor lighting conditions.
The versatile power supply and compact design make it easy to integrate the analyser into a variety of environments, while offering ease of use and maintenance.
To measure the composition of biogas, a biogas analyser uses different analytical methods depending on the component to be analysed.
CO2 and CH4 are measured using non-dispersive infrared (NDIR) absorption technology.
The measurement principle of an infrared gas analyser (NDIR) is described on the Fuji Electric multigas infrared analyser page.
O2 and landfill gas oxygen are measured by the electrochemical method.
The measurement principle of the electrochemical O2 cell is as follows:
Two electrodes are enclosed in the cell filled with electrolyte. When biogas enters the cell, a chemical reaction occurs, generating a flow of electrons and thus an electric current, proportional to the amount of oxygen present in the biogas.
H2S is measured by the electrolytic method at constant potential.
Two chemical reactions are required for this method.
The H2S to be measured reacts with the moisture (H2O) present in the cell at the working electrode.
Reaction at the working electrode
H2S+ 4H2O-> H2SO4 + 8H+ + 8e-
In the same time, at the auxiliary electrode, a second reaction takes place between the oxygen (O2) also present and the hydrogen ions (H+) generated by the first reaction.
Reaction at auxiliary electrode
O2 + 4H + + 4E- -> 2H2O
The flow of electrons varies in proportion to the amount of H2S present in the cell.
For both reactions to take place, it is therefore necessary that the cell contains not only the H2S to be measured but also a minimum of oxygen and moisture..
The Fuji Electric ZPAF analyser measures H2S continuously because it is provided with an automatic regeneration system for the H2S measuring cell..
Since the H2S measuring cell uses the electrolytic constant potential method, it is imperative to include oxygen and moisture in the gas to be analysed. With this automatic regeneration system, ambient air is supplied to the transmitter at regular intervals to allow the analysis of the biogas, which is often oxygen-free and dried out before analysis.
Fuji Electric is helping to preserve our environment, develop renewable energies and save energy.
Accurate continuous measurement of biogas composition.
Up to 4 components including H₂S measured continuously and simultaneously.
H2S - CH4 - CO2 - O2 -
Pressure - Temperature - Flow rate
Analysis cabinet - wall-mounted box
Biogas production and processing sites are subject to environmental constraints in terms of corrosivity and toxicity (presence of H2S), explosivity (presence of CH4), but also potentially high thermal stress and dust.
The Fuji Electric ZPSB biogas analysis system has been designed to measure the composition of biogas at industrial sites such as non-hazardous waste landfills (NHWL), sewage treatment plants and anaerobic digesters and fermenters. The landfill gas analyser allows the landfill gas management and landfill gas monitoring.
Proven excellent performance of Fuji Electric gas analysers
Simultaneous & continuous measurement of CH4, CO2, O2 and H2S
Flexible solutions that adapt to the specifics of the site
Flexible solutions that adapt to the specifics of the site
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The ZPSB biogas analysis system incorporates the biogas ZPAF analyser. It features the following technical characteristics:
These cutting-edge technologies ensure exceptional precision and reliability in the measurement of these critical components.
These extensive measurement ranges cover a variety of applications, while the versatile power supply facilitates integration in diverse electrical environments.
This performance testifies to the speed and precision of the analyser, guaranteeing reliable real-time monitoring.
A variety of outputs and means of communication ensure easy integration with other systems, while the backlit LCD display provides clear visualization of data.
These conditions enable use in a variety of environments, while the sampling options guarantee accurate measurement.
The multipoint system offers greater flexibility for complex applications, with advanced configuration and monitoring functions.
