Biogas flow meter for landfill gas and WWTP gas

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The Fuji Electric flow meter has been developed specifically for the biogas market using pitot tube and differential pressure sensor flow measurement technology. This custody transfer gas flow measurement directly determines the gas flow rate at a standard pressure and temperature.

Benefits of the biogas flow meter fuji electric

Benefits of the biogas flow meter

The Fuji Electric biogas flow meter provides instantaneous and totalized measurements of the biogas flow to know the quantity and quality produced.

  • Standardised flow rate with multivariate compensation for pressure and temperature
  • Optimisation of your plant's energy recovery for the TGAP
  • Measurement of methane content (optional) and net calorific value
  • MID MI-002 biogas certification / CET biogas


Technical-advantages-of-the-biogas-flow-meter-fuji-electricTechnical advantages

  1.     High-precision transactional measurement
  2.     Integrated gas composition correction
  3.     Minimal influence on the environment
  4.     Low-pressure drop
  5.     High robustness
  6.     Safety of the installation
  7.     Long-term stability


What is biogasWhat is biogas?

Biogas is a fuel that consists mainly of methane. This energy is renewable.

The process is produced by the fermentation of organic matter from plants and animals, biological waste, and effluents from food processing industries.
Methanisation is caused by anaerobic (complete absence of oxygen) fermentation in digesters used to treat wastewater, landfill or agricultural waste products.
Biomethane can be converted into green energy when it has been purified.
This gas is used to produce heat or power and to generate electricity.



Why do we need to measure the biogas flow rate?

Optimisation of the biogas fermentation process requires data on the process and the quantity produced.
Accurate and reliable measurement of the biogas flow rate and composition is recommended to monitor the fermentation process and ensure quality (gas analysis).
With this information, corrective actions can be taken to correct system malfunctions.

Why we need to measure flow rate of biogas

How to measure the biogas flow rateHow to measure the biogas flow rate?

The prerequisite for a reliable, accurate and reproducible measurement is the determination of the flow rate under standard conditions.

A Fuji Electric measuring instrument is equipped with a differential pressure transmitter with a pitot tube, a temperature sensor and an absolute pressure transmitter to correct the volume flow at standard pressure and temperature.

For flow calculation under normal reference conditions (0° C, 1.01325 bar), the COF CH4 multi-channel computer allows the acquisition and visualisation of 1 to 6 counting channels.

An optional ZSPB gas analyser can be fitted to measure methane content and carbon dioxide CO2, O2 and H2S levels in the anaerobic digester.


biogas monitoringWhat are the applications of biogas flow meters?

Fuji Electric flow meters are low-pressure meters designed to monitor :

  •     biogas from landfills (collected, recovered, flared)
  •     waste gas from anaerobic digestion and agricultural anaerobic digestion
  •     Pumped-storage gas (PST)
  •     gas engines.

The operation of the measurement probe is perfectly suited to determine concentrations of biogas containing high CO2 or other substances in lower quantities such as H2S.


What are the difficulties in measuring biogas?

As biogas is a wet and corrosive gas, the longevity and stability of the measurement over the long term are essential to consider.

The raw materials used, the types of waste and the conditions under which they are processed cause the quality of the digestate to vary and thus the composition of the gas to differ.

Fluctuations caused by batch operation (solid waste processing/composting plant) or ageing of landfills lead to another challenge: the accuracy of measurement readings can degrade if the concentration of CH4 methane volume varies.

It is therefore essential that the measurement is compensated for if the accuracy and quality of the manufacturing process are to be guaranteed.

What are the advantages of the Fuji Electric biogas flow mete

What are the advantages of the Fuji Electric biogas flow meter?

Fuji Electric's meter technology has no moving parts, guaranteeing a long service life and low maintenance.

The sensors are easy to dismantle and clean.
They are suitable for use with low or high methane content.
These stainless steel sensors are highly resistant to chemical attack compared to other technologies (Vortex meter, ultrasonic flow meter, thermal mass flow meter).

These instruments ensure the safety of installations thanks to their hazardous area approvals (Atex ex d).


Biogas flow meter for landfill gas and WWTP gas documentation