Sierra Instruments, Inc.

- Model 240S Inline - Vortex Flow Meters

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Sierra was the first to introduce multivariable mass vortex flow meters to the market in the late 1990s with the InnovaMass 'S-Series' product line--the 240S and 241S. The InnovaMass 240S inline version is a true workhorse in applications ranging from large pipes and ducts, to high pressure and saturated or superheated steam. The InnovaMass 241S is manufactured as a volumetric only version or a multivariable version.

The iSeries Has Arrived!

Today, our next generation vortex product line, the iSeries InnovaMass 240i and 241i ,is fully redesigned with new cutting-edge innovation, featuring Sierra's proprietary Raptor II OS flow engine and robust Smart Interface Portal (SIP) for easy field validation.

Reduce Costs with Just One Process Connection

Five-In-One: The multivariable version of the Sierra's vortex flow meters allows one instrument and one process connection to measure five process parameters at the same time to simultaneously measure mass flow rate, temperature, pressure, volumetric flow rate, and fluid density.

  • Highly reliable with no moving parts
  • Flexibility with volumetric or multivariable versions
  • No leaks with all welded gasket-free flow body
  • Loop power option available

  • Mass & Volumetric flow monitoring of most gases, liquids and steam
  • Measures five process variables with one process connection :  
    • Mass flow rate
    • Volumetric flow rate
    • Temperature
    • Pressure
    • Fluid density
  • Rugged, long-lasting design for the toughest applications
  • Sensors located behind bluff body are well protected from pressure shocks and water hammer
  • Easy to Install, lots of field installation options
  • Loop-powered design simplifies wiring and signal processing
  • Fully field configurable field-configuration
  • Rangeable down to Reynold's number of 5000
  • Field validation/configuration to assure operating performance
  • Flow totalizer and alarms
  • Reduced installation cost and improved performance
  • An insertion probe version up to 72 inches (2 m) in length - 241S or our next generation 241i

  • Measures steam, gases and liquids
  • Pipe sizes from 0.5 to 8 inches  (1.3  to 20.3 cm); up to 72 inches (2 m) available   See 241S or next generation 241i
  • Flow range (30:1 Turndown):
    • Liquids:
      • 1 ft/s (0.3 m/s) Velocity Minimum
      • 30 ft/s (9.1 m/s) Velocity Maximum
    • Gas & Steam:
      • 10 ft/s (3.05 m/s) Velocity Minimum
      • 300 ft/s (91.5 m/s) Velocity Maximum
    • Accuracy:
      • Mass flow: +/- 1% of reading (liquids);    
        +/- 1.5% of reading  (gas & steam)
      • Volumetric:   +/- 0.7% of reading (liquids);    
        +/- 1% of reading   (gas & steam)
  • Repeatability:
    • Mass flow: +/- 0.2% of full scale
    • Volumetric: +/- 0.1% of full scale
    • Temperature: +/- 0.2°F (+/- 0.1°C)
    • Pressure: +/- 0.05% of full scale
    • Density: +/- 0.1% of full scale
  • Rangeability up to 30:1 
    (accuracy maintained across entire range
  • Process fluid temperature:
    • Standard: -40°F to 500°F (-40°C to 260°C)
    • High temperature (HT): up to 750°F (400°C)
    • Low temperature (CT): down to -330°F (-200°C)
  • Ambient temperature:
    • Operating: -5°F to 140°F (-20° to 60°C)
    • Storage: -40°F to 150°F (-40° to 65°C) 0 to 98%
      relative humidity, noncondensing conditions
    • Process pressure:
      • Standard: up to 1500 psia (100 bara)
      • High pressure to 5000 psig (345 barg)
    • Power supply options:
      • 12 to 36 VDC, 100 mA (add 20 mA per output up to 60 mA)
      • 100 to 240 VAC, 50/60 Hz, 25 watts
      • Active loop, loop powered with 4 to 20ma output
    • Output signals:
      • Three programmable 4 to 20 mA   
      • User definable pulse output for totalized flow
    • Response time is adjustable from 1 to 100 seconds316 stainless steel construction (other materials available
    • Hazardous-Area Location Enclosure (IP66) and NEMA 4X (IP65)
    • Digital communications: See next generation240i.
    • Approvals:
      • FM
      • CSA
      • ATEX
      • IEXEx
      • CE

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