Vent Gas Flow Meters for Direct Mass Measurement in Vent (Flash) Gas Applications

Advantages of Fox Vent and Flash Gas Flow Meters

Fox Thermal Flow Meters for Vent Gas Applications

Thermal Mass Flow Meters from Fox Thermal Instruments are often used to monitor vent or flash gas from tank batteries in the Oil and Gas industry. Vent/flash gas and flare gas can often be tricky gases for some types of technology. Some monitor flow well only at high velocities, and others only at lower velocities. Thermal mass flow meter technology is a popular solution to this problem. The thermal mass flow meter can measure gas flows at very high and very low flow rates.

At Fox Thermal Instruments, our meters are rugged and have a proven track record of accurate flow rate measurement across a wide range of applications. Most commonly, the Model FT3 is used in Oil and Gas applications like vent gas applications, but all Fox meters are rugged and accurate meters that can be used in a wide variety of applications involving low and high velocity gas flows. With repeatability and a low turndown, Fox thermal gas mass flow meters were designed to be durable and versatile.

To view a summary of Fox flow meters side-by-side, check out the Fox Product Comparison to find the right meter with the right specifications for your application.

Here are some other advantages to choosing a Fox meter:

  • Exceptional low-flow sensitivity provides accurate measurement over a wide range of venting and flaring operations
  • Heated stainless steel sensor is suitable for corrosive, particulate-laden gas streams
  • No temperature and pressure compensation required
  • Direct Mass Measurement
  • Built-in alarms, totalizers and a wide variety of communications protocols available for easy interfacing with emissions management systems

Vent Gas Flow Meters for Direct Mass Measurement

Fox Thermal Vent Gas Flow Meters for Direct Mass Measurement

Rising levels of volatile organic compounds (VOCs) in the atmosphere are a subject of general concern and increasing environmental regulation. For instance, US EPA’s 40 CFR Part 98 is comprised of a body of regulations meant to improve air quality. This body of regulations is broken into a multitude of sections dedicated to different industries.

In order to monitor and quantify emissions, VOC concentrations as well as VOC flow rates must be measured to evaluate mass emission rate. Purchasing flash gas flow meters or vent gas flow meters is a common way to measure these emissions.

The major reason for monitoring VOC emissions is to provide information for environmental audits. However, VOC monitoring with a flash gas flow meter or vent gas flow meter can also help you:

  • Identify opportunities to reduce emissions
  • Evaluate performance of existing abatement equipment
  • Identify and correct sources of fugitive emissions
  • Demonstrate continual improvement in environmental performance
  • Meet health and safety requirements and improve working conditions
  • Optimize process flows throughout the plant or storage facility

The thermal mass flow meter’s ability to provide a direct reading of mass flow rate without additional pressure and temperature instrumentation makes it ideal for measuring flow rates in flare stacks, ducts and tank vents. A flash gas flow meter or vent gas flow meter from Fox is the ideal way to measure these emissions. See how the Model FT3 is used frequently for this purpose in this Fox case study on VOC emissions.

Read more about Oil & Gas applications.

Fox Thermal Instruments strives to design and manufacture the most innovative and reliable thermal mass flow meter products to our customers. All Fox meters measure mass flow rate and are available in insertion and inline models. Fox models FT1, FT2A and FT3 are mass flow meters and temperature transmitters providing isolated 4-20mA and pulse output for flow rate, and a 4-20mA pulse output for process gas temperature or a second flow rate output.

Fox flow meters are often calibrated to measure air flow. Please review the product features for Models FT1, FT2A and FT3 for further information about our thermal mass flow meter products. If you’re not sure which meter is right for your vent gas application, use our Help Me Choose app to find the ideal meter or Contact Us today!

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