Thermal flow meters measure the mass flow rate of gas. Here is a list of the thermal mass flow meter applications within specific industries and the common gases they measure.

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Thermal Mass Flow Meter

Thermal Mass Flow Meter Applications and the Industries ServedThermal mass flow meters are popular in industrial applications because of their design. They have no moving parts, require no temperature or pressure corrections, and retain excellent accuracy over a substantial range of flow rates. Additionally, whenever there is a limited straight run, common in many industrial applications, and a developed profile cannot be achieved, flow conditioning can solve the issue. Flow conditioning can create a known and repeatable velocity profile and enhance the flow meter’s accuracy.

Industry and Thermal Mass Flow Meter Application

Industrial Processing Plants – Pulp and Paper, Steel, Chemical, and Petrochemical Plants

Nitrogen tank blanketing
Nitrogen tank blanketing

Compressed air monitoring
Natural gas to boilers
Combustion air flow to boilers
Hydrogen monitoring
Gas additives/gas mixing
Valve and regulator leak testing
Secondary air inlet control and kilns
Air and nitrogen purge monitoring
Digester gas/Biogas
Gas flow to test separators
Oxygen monitoring and water purification
Dryer air flow
Flare stack gas monitoring
Fluid bed dryer air flow
Nitrogen blanketing
Nitrogen seal leak detection
Propane line monitoring
Accumulator tank air flow

Steel/Aluminum Fabrication

Argon and nitrogen flow rates
Coke/oven gas
Air flow rates
Aluminum smelter chlorine and argon flow
Turbo airflow
Natural gas of annealing operations
Natural gas to smelting and casting ops
Nitrogen flows to the annealing process
Compressed air

Power Plants

Combustion air flow
Primary and secondary air flow
Natural gas to power generators/gensets
Heated air to coal mill
Condenser air leakage
Contaminant unit vent air flow

Wastewater Digester Gas at WW Treatment Plant as Energy Source
Within a contemporary wastewater treatment process, there are many opportunities to use thermal mass flow meters to measure digester gas flow or flare gas flow.

Water and Wastewater

Aeration air flow
Ozone measurement
Digester gas

Specialty Gas Producers

Nitrogen, argon, CO2, and hydrogen usage
Custody transfer/pay meter

Food Processing/Pharmaceutical Industry

Tablet and pill coating air and nitrogen flow
Exhaust gas
CO2 in beer manufacturing
Nitrogen in mayonnaise manufacturing
Ventilation systems
Compressor air flow
Hydrogen in hydrogenated oil production
CO2 fermenter off-gas

Automotive Industry

Compressed air monitoring
Natural gas consumption
Powder plant air flow
Paint booth/paint oven ventilation
Engine test stands air flow measurement
Fuel cell hydrogen flow


Compressed air to mine shafts
Ventilation air monitoring
Air injection into flocculation vessels


Air balancing
Duct flow
Energy conservation
Laminar flow benches

Glass/Ceramics Manufacturing

Oxygen and natural gas to burners
Natural gas to furnaces and kilns


Flare stack gas monitoring
Fuel gas monitoring
Air intake flow

Natural Gas Transmission

Natural gas to compressor stations
Natural gas to gas-fired compressors

Landfill Gas Monitoring, Recovery, and Flaring
Accurate measurement of landfill gas is needed throughout the system whether the objective is monitoring, LFG to energy or recovery, or GHG emissions reporting.

Plastics Industry

Air and nitrogen flow monitoring


Landfill gas/dump gas flow


Common Gases

  • Air
  • Ammonia
  • Biogas
  • Butane
  • Chlorine
  • Compressed air
  • Carbon monoxide
  • Carbon dioxide
  • Digester gas
  • Dump gas
  • Ethane
  • Ethylene
  • Helium
  • Hydrogen
  • Methane
  • Mixed gases
  • Natural gas
  • Nitrogen
  • Oxygen
  • Propane

If you have an application and need an accurate measurement of gas flow, contact Sage Metering and speak with one of our customer service representatives to recommend the appropriate meter.