Industry： Refining & Chemicals

Customer： Sinopec Zhenhai Refining & Chemical Company

Application： Large‑diameter acid gas measurement (DN700, low‑pressure)

Challenge

• Imported ultrasonic meter limited by low‑pressure, large‑bore acid gas conditions
• Wide flow variation; need real‑time mass and density for operations
• Lower pressure loss and simplified maintenance desired

Solution

• Customized SA80T Vortex Precession (DN700) for low‑pressure acid gas
• Owner‑collaborative pilot; on‑site calibration and structural optimization
• Outputs: 4-20 mA / Pulse / RS485 (Modbus RTU); density & mass flow enabled

Results

• Worldʼs first DN700 SA80T successfully delivered
• Wide turndown covers large flow swings; real‑time mass/density
• Accuracy ±0.5%; quick response; no periodic recalibration
• ~40% lower pressure loss vs. traditional devices; improved unit efficiency
• Parallel with imported ultrasonic for 2 years, performance verified and praised

Remarks

• Demonstrates feasibility of vortex precession at extra‑large diameters under low‑pressure acidic gas

Products Used： SA80T Swirl Flowmeter 

Industry： Polysilicon

Customer： Xinjiang Daqo New Energy

Application：Hydrogen measurement in reduction furnaces (periodic operation)

Challenge

• Low‑density hydrogen → weak signal at low Reynolds numbers
• Extreme range from min to max flow; must support interlock control
• Require high stability and repeatability in dynamic cycles

Solution

• Enhanced SA80T Vortex Precession with low‑Re signal acquisition & filtering
• Cycle‑aware calibration envelope tailored on site

Results

• Reliable detection of weak hydrogen signals at low Re
• Superior repeatability & stability, outperformed mass flow meters in comparison tests
• 1‑year parallel validation with existing meters; adoption scaled across lines

Remarks

• Set a benchmark for hydrogen lines in polysilicon reduction processes

Products Used： SA80T Swirl Flowmeter

Industry： City Gas / Utilities

Customer： Xinjiang Gas Group

Application：Process control & metering at a pressure regulation station

Challenge

• Extreme seasonal variation: winter vs. summer flows differ drastically
• Need one instrument to cover full range without switching meters

Solution

• Enhanced SA80T with custom calibration to widen effective turndown and maintain accuracy

Results

• Achieved 100:1 turndown in field operation
• Single meter replaced dual‑meter winter/summer setup
• Year‑round accuracy; simplified maintenance; operational efficiency improved; strong client feedback

Remarks

• Eliminated seasonal changeover risk and reduced OPEX

Products Used：SA80T Swirl Flowmeter 

Industry： Polysilicon

Customer： GCL

Application：Hydrogenation, rectification, reduction, tail‑gas recovery

Challenge

• Very wide turndown from ultra‑low to high flows
• Aggressive media: hydrogen and chlorosilane (SiH₃Cl) with condensation and fouling risks

Solution

• Enhanced SA80T with anti‑corrosion internal treatments and anti‑clog structural optimizations
• Multi‑media calibration windows; handling for condensation scenarios

Results

• Wear & clog resistance: sustained fault‑free running in aggressive media
• Precision + interlock: hydrogen ±0.5%; chlorosilane ±0.3% stable measurement
• ~15% annual throughput increase attributed to stable metering and process optimization

Remarks

• Applicable reference for corrosive, condensation‑prone polysilicon units

Products Used：SA80T Swirl Flowmeter 

Industry： Refining & Chemicals

Customer： Sinopec Yangzi Petrochemical

Application：Key metering points during refinery structural adjustment 

Challenge

• Legacy international vortex meter had insufficient turndown, leaving low‑flow blind spots

Solution

• Replaced with SA80T Vortex Precession at critical points; seamless DCS integration

Results

• 50:1 turndown achieved on site
• ~20% improvement in measurement accuracy and process control

Remarks

• Retrofit accomplished with minimal disruption; standard outputs simplified commissioning

Products Used：SA80T Swirl Flowmeter