# Sage Metering > Sage thermal mass flow meter models accurately measure direct gas mass \(natural gas, compressed air, N2, and more\) flow over a dynamic range\. Generated by Yoast SEO v26.8, this is an llms.txt file, meant for consumption by LLMs. ## Pages - [Home](https://sagemeterstage.wpenginepowered.com/) - [About Sage Metering](https://sagemeterstage.wpenginepowered.com/about-us/) - [Contact Us](https://sagemeterstage.wpenginepowered.com/contact-us/) - [Approvals](https://sagemeterstage.wpenginepowered.com/approvals/) - [Thermal Mass Flow Videos and FAQ](https://sagemeterstage.wpenginepowered.com/videos/) ## Posts - [Air Fuel Ratio Effect Combustion Efficiency and Air Fuel Ratio](https://sagemeterstage.wpenginepowered.com/combustion-efficiency/air-fuel-ratio-effect-on-combustion-efficiency/) - [Sage Thermal Mass Flow Meter](https://sagemeterstage.wpenginepowered.com/back-to-basics/thermal-mass-flow-meter-working-principle-and-theory/) - [Flow Conditioners: Enhancing Accuracy in Gas Flow Measurement](https://sagemeterstage.wpenginepowered.com/back-to-basics/what-is-flow-conditioning/): Flow conditioners enhance flow meter accuracy by creating uniform flow profiles at the sensor location\. Discover how these devices reduce straight\-run requirements while maintaining measurement precision across various pipe configurations, even in challenging installation environments\. - [Choosing the Right Flow Meter: Inline vs\. Insertion Style Thermal Mass Flow Meters](https://sagemeterstage.wpenginepowered.com/back-to-basics/faq-what-are-the-benefits-of-the-inline-vs-insertion-flow-meter/): Thermal mass flow meters come in two primary configurations: inline and insertion styles\. Each offers distinct advantages for different applications\. This guide helps you understand which configuration best suits your industrial gas measurement needs based on installation requirements, space constraints, and operational parameters\. - [Stoichiometric Combustion Impact on Boiler Efficiency](https://sagemeterstage.wpenginepowered.com/combustion-efficiency/stoichiometric-combustion-and-its-impact-on-boiler-efficiency/): Discover stoichiometric combustion \- the theoretical optimal point where perfect oxygen and fuel mixing achieves maximum boiler efficiency\. Learn how thermal mass flow meters enable precise combustion control, reducing energy costs while improving process efficiency in industrial applications\. ## Products - [Sage Model 51 HVAC Thermal Mass Flow Meter](https://sagemeterstage.wpenginepowered.com/products/model-51/): \Revolutionize Your HVAC Natural Gas Monitoring\ Introducing the Sage Model 51 HVAC Series \- the ultimate flow meter for precise natural gas and air flow measurement in commercial and institutional buildings\. Whether you're managing a sprawling university campus, a busy hospital, or a complex office building, our thermal mass flow meter delivers unparalleled accuracy and efficiency\. \[button size="medium" style="is\-outline primary" text="Request a Quote Now" link="https://sagemeterstage\.wpenginepowered\.com/message\-us/" target=""\]   - [Sage Prime Thermal Mass Flow Meter](https://sagemeterstage.wpenginepowered.com/products/sage-prime/): \[button size="medium" style="is\-outline primary" text="Request a Quote Now" link="https://sagemeterstage\.wpenginepowered\.com/message\-us/" target=""\] The Prime® is Sage’s long\-standing industrial thermal mass flow meter for measuring air and gas mass flow and is available in inline, Insertion, and remote styles\. Ideal for process gas flow, the meter achieves gas mass flow accuracy of \+/\- 0\.5% of full scale \+/\- 1\.0% of reading\. Among the strengths thermal technology offers include application versatility, wide turndown, and no moving parts\. The Sage meters use a proprietary digital hybrid circuit sensor that delivers no drift and improved performance, resolution, and reproducibility\. Sage is the pioneer of the first In\-Situ Calibration Verification\. The Prime has continuous diagnostics, showing the meter’s raw calibration milliwatts \(mW\) on the display\. This data is vital to the quick and easy 3\-step In\-Situ Calibration Verification to verify that the sensor performs correctly, is clean, and remains in calibration\. It validates that the meter operates correctly, eliminating the need for annual factory calibrations\. SageCom software is optionally available for the Prime permitting the user to perform diagnostics, ensuring the meter functions correctly\. SageCom also can reconfigure certain parameters in the flow meter, such as changing full scale, introducing a low flow cutoff, or modifying the filtering \(e\.g\., smoothing the signal output, if needed\)\. \(See the \Paramount\ meter should you need the most advanced options, an advanced microprocessor for the fastest response to temperature changes, and room for expansion\.\) \[button size="medium" style="is\-outline primary" text="Sage Prime Brochure" link="https://sagemeterstage\.wpenginepowered\.com/pdf/PrimeFlyerRev17\-011813\.pdf" target=""\] - [Paramount Industrial Thermal Mass Flow Meter](https://sagemeterstage.wpenginepowered.com/products/paramount/): The Sage \Paramount 400 Series\ is a rugged thermal mass flow meter built for precise gas mass flow measurement in demanding industrial environments\. Available in insertion, inline, and remote styles, it’s ideal for natural gas, biogas, flare gas, and other process gas applications where reliability and repeatability matter\. \
\Contact a specialist\\Configure a meter\\ \Key Features of the Paramount Gas Flow Meter\ \ \\High accuracy on actual gas composition\ – ±1\.0% of reading ±0\.5% of full scale for all gases\ \\Ultra\-low flow sensitivity \– Detects flow rates down to 5 SFPM\ \\Wide measurement range\ – Accurate across a 100:1 turndown\ \\In\-Situ Calibration Verification\ – \Quickly check sensor health and NIST\-traceable accuracy\ in minutes, without removing the meter\ \\Smart connectivity\ – Use \SageCom™ software\ to configure and diagnose the meter via USB \(standard\) or Bluetooth \(optional\)\ \\\EPA compliant\\ – Supports greenhouse gas \(GHG\) reporting and carbon credit protocols\ \\Space\-saving installation\ – Built\-in flow conditioning needs just 3D of straight pipe for inline meters \(optional for insertion style\)\ \\Low power operation\ – Draws under 3W with no trade\-off in performance\ \\System integration\ – Supports HART™, Ethernet/IP, Modbus/TCP, Profinet IO, and BACnet/IP for seamless communication with control systems\ \\Hazardous\-rated\ – Class I, Div 2 \(Div 1 optional\) with NEMA 4X enclosure\ \ \More resources:\ \