Flare Gas Flow Meters for Direct Mass Measurement in Flare and Combustor Gas Applications

Fox Thermal Flow Meters for Flare Applications

Flare stacks and enclosed combustors (or vapor combustors) are used to burn waste gases from oil and gas production, gas processing facilities, dehydration facilities, tank batteries, tank farms, and industrial plants. These flares often convert chemical and organic hydrocarbons into primarily water vapor and CO2. Some processes also use relief valves to vent flammable gases to the flare stack during upset conditions.

Other applications for combustor and flare gas flow meters include oil and gas well drilling operations, oil refineries, chemical process plants, gas distribution infrastructure, and landfills. Flares and combustors are subject to stringent regulations, requiring operators to measure, record and report the number of flared gases.

Due to the potential for large changes in flow rates, density, pressure and gas composition, flare gas measurement is one of the most difficult and demanding flow applications. Fox Thermal mass flow meters have demonstrated their ability to measure the low flow rates typical of normal flare conditions, and also the high velocities found in upset conditions. A flare gas flow meter by Fox Thermal is especially equipped for flare applications.

Fluid composition and installation anomalies can also affect meter performance. Fox Thermal’s Calibration Lab employs a wide range of gases, gas mixtures, temperatures, pressures and line sizes to simulate actual fluid and process conditions while calibrating flare gas flow meters. This real-world approach improves installed accuracy and minimizes measurement uncertainty.

There are a number of advantages to choosing Fox Thermal:

  • Exceptional low-flow sensitivity for accurate measurement over a wide range of flaring operations
  • Heated stainless steel sensor is suitable for corrosive, particulate-laden gas streams
  • No temperature and pressure compensation required
  • Direct Mass Measurement - no temperature or pressure compensation required!
  • Repeatability and exceptionally broad measurement range: up to 1000:1 (100:1 typical)
  • Built-in alarms, totalizers and a wide variety of communications protocols available for easy interfacing with emissions management systems

Flares and combustors are known for having varying velocities. For this reason, a flow meter that can handle both very low and high flow rates of gas flow is ideal for these applications. The model FT4X was designed to withstand these conditions. It is a rugged flow meter perfect for use in oil and gas applications needing accurate and repeatable gas flow measurement.

Fox Thermal flow meters offer the Digital Difference. Watch our video to learn about the DDC-Sensor™, Gas-SelectX®, and CAL-V™ calibration validation.

Configure a Fox Thermal meter for your flare or combustor gas application now!

Read more about oil and gas applications and how to stay in compliance with current and developing greenhouse gas emissions regulations.

Fox Thermal strives to design and manufacture the most innovative and reliable flare gas flow meters for our customers. All Fox Thermal meters measure mass flow rate and are available in insertion and inline models. 

If you’re not sure which meter is right for your flare and combustor gas application, use our Help Me Choose app to find the ideal meter or contact us today!

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