Skip to content
Family Owned & Operated Since 1971• Bakersfield, CA
Valley Instrument
Rosemount 3418 Eight-Path Gas Ultrasonic Flow Meter
Rosemount

3418 Eight-Path Gas Ultrasonic Flow Meter

SKU: 3418

Eight-path gas ultrasonic flow meter — combines two interlocked 4-path British Gas design meters in one flow meter body. The second set of chords is the mirror image of the first, allowing the meter to mathematically cancel out the effects of swirl and cross-flow. OIML 0.5 Accuracy Class certified for fiscal custody transfer. Requires only five diameters of straight run upstream and no flow conditioner — the lowest installation footprint in fiscal gas measurement. Best for sophisticated fiscal applications: international interconnects, high-pressure pipelines, fiscal export terminals where every fraction of a percent matters.

Contact us for pricing on this product.

Authorized Dealer
Calibration Available
Nationwide Shipping
Expert Support

Eight-path gas ultrasonic flow meter — combines two interlocked 4-path British Gas design meters in one flow meter body. The second set of chords is the mirror image of the first, allowing the meter to mathematically cancel out the effects of swirl and cross-flow. OIML 0.5 Accuracy Class certified for fiscal custody transfer. Requires only five diameters of straight run upstream and no flow conditioner — the lowest installation footprint in fiscal gas measurement. Best for sophisticated fiscal applications: international interconnects, high-pressure pipelines, fiscal export terminals where every fraction of a percent matters.

The Rosemount 3418 Eight-Path Gas Ultrasonic Flow Meter # 3418 is manufactured by Rosemount. Valley Instrument Service is an authorized Rosemount dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.

Have questions about this product?

Our team can help with product selection, specs, pricing, and application support.

Contact Us or Call (661) 327-8681

Related Products

Rosemount 3410 Series Electronics for Gas Ultrasonic Flow Meters # 3410
Rosemount

3410 Series Electronics for Gas Ultrasonic Flow Meters

Standalone electronics module that drives the entire Rosemount gas-ultrasonic line — the 3412 / 3414 / 3415 / 3416 / 3417 / 3418 in-line meters and a retrofit upgrade for older Daniel-branded gas ultrasonic spool pieces. Next-generation processors deliver superior low-flow accuracy and linearity throughout the calibrated flow range. Quick local access to 10 scrolling variables on an optional LED display. True 100Base-T Ethernet connectivity. Smart Meter Verification Basic feature included in current firmware. Operating range -40°C to +85°C; -20°C/-50°C low-temp storage with T-21/T-22 transducers.

Request Quote →
Rosemount 3412 JuniorSonic Two-Path Gas Ultrasonic Flow Meter # 3412
Rosemount

3412 JuniorSonic Two-Path Gas Ultrasonic Flow Meter

Cost-effective two-path gas ultrasonic flow meter for non-fiscal allocation and check metering — fully redundant dual-bounce path design with field-proven T-21 transducers engineered for wet, rich, and/or dirty gas applications. AGA 8 Compressibility and AGA 10 Speed of Sound auto-calculations. MeterLink software gives operators easy access to real-time diagnostics and detection of flow disturbances. Field-replaceable transformer module simplifies maintenance. Best for upstream gas allocation, well-pad flow, and check-meter installations where the 4-path 3414 SeniorSonic is over-spec.

Request Quote →
Rosemount 3414 SeniorSonic Four-Path Gas Ultrasonic Flow Meter # 3414
Rosemount

3414 SeniorSonic Four-Path Gas Ultrasonic Flow Meter

SeniorSonic four-path gas ultrasonic flow meter — field-proven British Gas chordal design with ultra-fast Rosemount 3410 series electronics. Four chordal measurement paths cover the full velocity profile, delivering the sampling speed needed for fast-changing flow dynamics. Used for fiscal custody transfer of natural gas, line balancing, and any high-precision gas measurement application below the 8-path 3418's range. SIL 2 capable. AGA 9 / API Chapter 14.10 compliant. T-20, T-21, or T-22 transducer options for sweet, wet/rich, or cryogenic gas service.

Request Quote →
Rosemount 3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter # 3415
Rosemount

3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter

4+1 dual-configuration gas ultrasonic flow meter — combines the 3414 SeniorSonic 4-path chordal British Gas design (custody transfer) with a single-path reflective check meter in one body. The 4-path measures custody-grade fiscal flow; the +1 path provides continuous real-time measurement verification and early warning of process drift, contamination, or meter deviations. Same single-spool installation as a 3414. Used wherever you want fiscal accuracy plus built-in self-checking for high-confidence custody transfer.

Request Quote →