Pure Gas Flow Meter Applications

Accurate, Low-Maintenance Pure Gas Flow Measurement with Thermal Mass Flow Meters

For the most accurate measurement of pure gas flow, thermal flow meters for pure gas applications from Fox Thermal provide high accuracy and fast response, all in a no-moving-parts design to reduce maintenance costs.

Fox Thermal Pure Gas Flow Meters Deliver

Highest Accuracy Flow Measurement

Pure gas mass flow meters from Fox Thermal deliver the highest level of accuracy, with exceptional low-flow sensitivity, over a wide range of industrial applications.

Low Cost/High-Value Pure Gas Flow Measurement

Compare the price, ease-of-use, and flexibility of Fox Thermal mass flow meters and their features versus the features and cost of our competitors.

Great Customer Service and Short Lead Times

Not only will you experience great customer service from Fox Thermal and its representatives, but you will also avoid the long lead times of other brands.

More About Pure Gas Flow Measurement

Pure and mixed gases are used in manufacturing processes for pharmaceuticals, vehicles, electronics, and many more applications. These gases must maintain high purity or else they risk diminishing product quality.

Large shops or manufacturers often store gases on-site and then pipe the gas to equipment. Measuring the flow of gases to track usage and compare to purchase manifests allows operators to find inefficiencies or leaks.

Detecting leaks early is crucial to maintain stock and keep costs under control. Finding inefficiencies early can allow the operator to make key decisions for maintenance or replacement strategies.

Fox Thermal mass flow meters provide the ideal solution to control leaks with easy installation, a no-moving-parts design, and a wide turndown (up to 1,000:1, 100:1 typical).

Help Me Choose A Flow Meter
Welding is an application for pure gas flow meters.

Thermal Mass Meters for Pure Gas Flow Meter Applications

Pure gases are used in a multitude of ways across different industries, requiring accurate flow measurements. Pure gas flow monitoring is essential for specialty gas producers of nitrogen, argon, carbon dioxide, hydrogen, oxygen, etc.

Other applications for pure gas flow meters include food processing and beverage manufacturing, fluid bed dryers, water purification, tablet and pill coating, welding, annealing, and purge monitoring.

Fox Thermal manufactures the following thermal mass flow meters for pure gas flow measurement:

  • Air flow meters
  • Argon flow meters
  • Butane flow meters
  • Carbon dioxide flow meters
  • Ethane flow meters
  • Helium flow meters
  • Hydrogen flow meters
  • Methane flow meters
  • Nitrogen flow meters
  • Oxygen flow meters
  • Propane flow meters
Pure gas flow monitoring is critical in the beverage manufacturing industry.

Avoid Downtime with Gas-SelectX® and CAL-V™ Calibration Validation for Pure Gas Flow Meter Applications

When measuring pure gas flow, the flow meter must be calibrated to the actual gas composition. Fox Thermal’s Gas-SelectX® gas selection feature - available on our FT1, FT4A, and FT4X flow meters - allows the user to easily switch from monitoring the flow of one gas to another.

So, for example, Gas-SelectX® comes with a Pure Gas menu, allowing the user to change from measuring pure Nitrogen to pure Oxygen. This avoids sending the meter back to the factory for recalibration to the new pure gas type - eliminating the time out of service, process downtime, and service charges from manufacturers.

Another key feature from Fox Thermal, the CAL-V™ Calibration Validation test feature, is available on the FT1, FT3, FT4A, and FT4X flow meter models. A CAL-V™ test can be run anytime and under process flow conditions.

The test produces a pass/fail result that ensures the flow meter retains its NIST-traceable calibration from the factory. This allows the user to avoid shutting down the process while checking that the meter is still measuring the gas flow accurately.

By offering these features, Fox Thermal helps make downtime a thing of the past.

Help Me Choose A Flow Meter
Model FT1 for pure gas flow measurement.

How to Get Flow Meters for Measuring High Purity Gases

Our new app can help you choose the right flow meter model fast.

If you’re not sure which flow meter is right for your needs, our Help Me Choose app walks you through a short series of questions to help you choose the ideal meter.

Enter some basic details in the configurator form

Simply enter your process data and measurement requirements into our automated product configurator. Drop-down menus and Help icons will guide you to answer each question.

Save and submit your application data to us for a quote — it’s that easy!

Save the data you entered into the configurator to create a PDF with a model code and application ID. When you're ready, submit your application to the team at Fox Thermal for a quote.

Discover the Fox Thermal Advantage

Flow Meters for Pure Gas Applications

fox thermal product ft1

Model FT1

The FT1 is the most popular flow meter for pure gas applications. Features include a list of pure gases in the Pure Gas menu on Gas-SelectX®, Calibration Validation with CAL-V™, a great price point, and a short lead time.

Model FT1
fox thermal product ft2A meter

Model FT2A

The Model FT2A has a large selection of communication protocol options available. Options include BACnet MS/TP, RS485 Modbus RTU, Profibus-DP, DeviceNet, or Ethernet Modbus TCP. Ideal for measuring Argon shielding gas or other atmospheric gas needs.

Model FT2A
fox thermal product ft3 meter

Model FT3

Fox Thermal’s Model FT3 can be used to measure Hydrogen in its purest form or mixed with other gases. These thermal mass flow meters come with FM/FMc, ATEX, or IECEx approvals and NIST traceable calibration for higher accuracy.

Model FT3
fox thermal product ft4A meter

Model FT4A

The Fox Thermal Model FT4A includes the Gas-SelectX® expanded gas selection menu, including the Pure Gas menu, and the CAL-V™ calibration validation feature. It is CE, FM, and FMc approved, along with ATEX and IECEx. Applications include gas separators and vapor recovery units.

Model FT4A
fox thermal product ft4X meter

Model FT4X

The Fox Thermal Model FT4X thermal mass flow meter comes with a BLM accuracy-compliant data logger which maintains a 7-year history. Includes the Gas-SelectX® & CAL-V™ calibration validation features. The FT4X flow meter is available cleaned and bagged for Oxygen service.

Model FT4X

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News & Innovation

Hydrogen Gases Are on the Rise in the Industrial and Energy Sectors

One answer to cleaner global energy supplies is the conversion of fossil fuels to hydrogen. Accurate pure gas flow measurement solutions, like thermal mass flow meters, are key to efficient process control for hydrogen applications.

Learn More
Flow Meter Comparison: Thermal Mass Flow Meters vs Competing Technology

There are a few key characteristics to consider when choosing the best flow meters for pure gas testing applications.

Learn More
Tech Talk - Industries That Use Thermal Flow Meters in Their Operations

Plant managers and maintenance managers often use several thermal mass flow meters to determine precisely where their valuable high-purity gases are being consumed and possibly wasted.

Learn More

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