Flow Measurement instrumentation for superior natural gas measurement & control - Oil, Gas & Refineries - Gas

Precise measurement of natural gas requires high accuracy, low pressure drop and direct mass flow reading—all the hallmarks of Sierra’s immersible thermal, mass vortex and thermal mass flow controllers. Our mass flow controllers are ideal for natural gas flow measurement with 100:1 turndown and no moving parts, providing a robust MFC solution. Our natural gas flow measurement instruments can also handle liquefied natural gas (LNG) via our cryogenic mass vortex meters.

Sierra has a proven full line of natural gas measurement products with over 25,000 units sold across the applications ranging from natural gas distribution, boiler efficiency, burner control, and allocation and billing.  To effectively measure natural gas, our flow meters are easy to install and retrofit into existing piping, and have greenhouse gas certification.

Our digital communications solutions, for use in conjunction with mass flow controllers for measuring natural gas, also offer engineers and systems integrators full industrial system integration and networking capability with Sierra's industrial flow meters.

Boiler MACT Certified
Thermal mass flow meters are also ideal for compliance for Boiler MACT regulations for inlet fuel measurement for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD).

Boiler MACT


Natural Gas Distribution


Green House Gas (GHG)


Boiler Efficiency


Burner Control: Flame Temp


Precision Burner Control for Natural Gas Flow


Fuel/Air Ratio


LNG Measurement


Allocation & Billing