

SKU: 3412
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.
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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.
The Rosemount 3412 JuniorSonic Two-Path Gas Ultrasonic Flow Meter # 3412 is manufactured by Rosemount. Valley Instrument Service is an authorized Rosemount dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
Our team can help with product selection, specs, pricing, and application support.
Contact Us or Call (661) 327-8681Cost-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.
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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.

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.

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.

4+2 dual-configuration gas ultrasonic flow meter — combines a 4-path SeniorSonic chordal British Gas custody meter with a 2-path reflective check meter in one body. The +2 reflective check provides continuous independent verification of custody readings. More robust than the 3415's +1 check (two independent comparison paths instead of one). Best when fiscal-transfer reliability requires more than one redundant check path but the full 4+4 of the 3417 is over-spec.