Gas Quality Monitoring

AVENISENSE offers sensing technologies for the surveillance of refined, natural, and industrial gases

Gas Quality Monitoring

Real-time monitoring of gas quality

Gas density is directly affected by its composition. It can be used to estimate the calorific value for burner optimization and correct the flow measurement of gas through differential pressure flow meters.

Typical applications of NORTHDOME for Gas Quality Monitoring :

  • Energy content (WI, BTU, heating value)

  • Gas flow measurements

  • Natural gas quality control

  • Fuel gas combustion control (furnaces, heaters…)

  • Gas turbine control

  • Flare gas analysis / monitoring

  • SF6 concentration (high-voltage switchgear)

NORTHDOME, the unique sensor to measure the density and temperature of a gas in real time, enables you to monitor the gas quality. Either implemented into process lines or used as a instrument in an analyzer for quality control, the NORTHDOME has proven high metrological performances together with an unrivalled endurance to process conditions. By adding a SPHERE pressure sensor, it is possible to calculate the density under reference conditions, and the molecular weight.



Converting a gas wet test volumetric meter to mass meter

Your tasks:

Problem: Do you have to make a mass balance around a pilot plant but only have volumetric flow information? Do you have to grab samples of gas and send it to a lab for analysis and wait days for the results? Do you have to use an expensive on-line gas chromatograph or mass spectrometer to arrive at the density/composition of the pilot plant off gas?

Solution: By applying an in-line gas density measurement along with a wet test low volume flow meter, you have a real-time indication of the mass flow rate and total flow of off-gas from the pilot plant. The NORTHDOME the gas density meter, provides this key information to the pilot plant operator for better control and evaluation of these critical process.


  • Ability to measure gas density and temperature
  • Calculation of gas specific gravity, composition and molar mass with addition of SPHERE pressure sensor
  • Analog and digital data communication to the pilot plant control system
  • Hazardous area installation classification
  • Low pressure drop design for easy integration to a wet test meter

Your benefits:

  • Quality. The off-gas density value is an indication of the operation of the pilot plant.
  • Safety. Online measurement makes tedious and time-consuming manual measurements a thing of the past. You see the current state of your pilot plant process with a mouse click.
  • Cost saving. The online measurement enables you collect data in a timely manner. The result? An increase in operating efficiency of the pilot plant process with shorter and more experiments.

Product in use:

Read more

AVENISENSE_NORTHDOME APPLICATION_Measuring Biogas Composition (application 886.97 KB)
AVENISENSE_NORTHDOME APPLICATION_Real-time inline process monitoring (application 886.97 KB)
AVENISENSE_NORTHDOME APPLICATION_Integration int Wobbe index and BTU Analyzers (application 880.42 KB)