Industry-Choice For Bulk High Purity Gas Custody Transfer To Semicon Fabs

• Industry-choice for bulk gas distribution custody transfer service in semiconductor fabs
• Ultra high purity interior finishes
• Built and shipped to ultra high purity claen room standards
• Sierra's state-of-the-art ISO 9000 closed loop calibration facility for best accuracy
• Built-in flow conditioning elements drastically reduce upstream straight-run requirements
• Buttweld connections and a VCR probe-connection fitting
• Field Validation/Configuration to assure operating performance: Watch video...

• Field rangeability
• Flow totalizer and alarms
• Very low pressure drop
• No moving parts
• Flow-range adjustment and validation and diagnostics
• Dual-range capability
• Large LCD display and pushbutton interface, remote enclosure mounting available
• Free computer interface software: Download now...

• Accuracy: +/- 1% of reading plus +/- 0.5% of full scale
• Repeatability: +/- 0.2% of full scale
• Pipe sizes from 0.5 to 12 inches (1.27 to 30.4 cm) 
• Flow range to 20,000 sfpm (100 smps)
• Measure all inert gases and all non-condensing clean gases
• Flammable gases: methane, propane, hydrogen, digester gas, natural gas
• Corrosive gases compatible with 316L stainless steel
• Turndown: 100:1 
• Temperature:
  • Operating: -40°F to 350°F (-40°C to 200°C)
  • Ambient: -40°F to 120°F (-40°C to 50°C)
• High temperature (HT) option to 750°F (400°C)
• Response time is one second to achieve 63% of final value
• Power supply:
  • 18 to 30 VDC (regulated), 625 mA maximum
  • 100 to 240 VAC, 50/60 Hz, 15 watts maximum

View All Specs

• Electropolished  7-10 Ra 316 stainless steel construction
• Output signals: RS-232, 0 to 5 VDC, 0 to 10 VDC, 4 to 20 mA  
• User definable pulse output for totalized flow
• Digital communications: Foundation Fieldbus, HART, Modbus RTU, and Profibus DP
• Hazardous-Area Location Enclosure (IP66) and NEMA 4X (IP65)
• Approvals:
  • FM (USA) Class I, Div I, Groups B,C,D
  • CSA and CRN (Canada)
  • CE
  • PED (EU)
  • GOST R (Russian Federation)
  • Chinese Pattern Approval (China)