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Sierra - Model SteelMass 640S -Insertion Gas Mass Flow Meter
The SteelMass 640S insertion flow meter provides more accurate monitoring of peak, low flow and total air/gas mass flow rates, a critical part of many industrial process control systems. If you need a portable analog or digital air flow meter that easily inserts into industrial ducts and pipes up to 72 inches (2 m), choose SteelMass 640S.
- Insertion, totalizing air/gas mass flow meter
- Eliminate drift with patented DrySense™ sensor
- Increase flexibility with low pressure drop, high turndown
- Validate in the field for easy in-situ calibration
- Backed by lifetime sensor warranty
Named North America`s #1 selling thermal mass flow meter (2009 Flow Research, Boston MA), Sierra’s SteelMass Model 640S delivers precise measurements for heavy-duty industrial gas mass and air flow meter measurement applications. This insertion thermal mass air/gas flow meter offers precision SCFM (standard cubic feet per minute), SFPM (surface feet per minute) and SMPS (standard meters per second) measurement of gas mass flow rate in industrial environments.
The SteelMass 640S insertion flow meter provides more accurate monitoring of peak, low flow and total air/gas mass flow rates, a critical part of many industrial process control systems. If you need a portable analog or digital air flow meter that easily inserts into industrial ducts and pipes up to 72 inches (2 m), choose SteelMass® 640S.
The 640S compressed air flow meter is GHG certified and ideal for:
- Air volume flow metering
- Compressed air flow
- Aeration basin air flow
- Combustion air flow
- Natural gas fuel flow
- Custody transfer
- Stack gas emissions flow monitoring
Operating Principle: Thermal dispersion technology provides direct mass flow measurement featuring: no pressure or temperature compensation needed; no moving parts; low pressure drop; and high turndown. Watch the video to learn about Thermal Principle of Operation.
- Features our patented zero drift DrySense™ velocity sensor: Watch video...
- Lifetime warranty on sensor
- Sierra`s state-of-the-art ISO 9000 closed loop calibration facility matches each application for best accuracy
- Greenhouse Gas (GHG) certified to meet EPA (40 CFR Part 98)
- Optimized (CH4) as well as N20, SF6, HFCs, PFCs and CO2, per the EPA mandate
- Popular choice for landfill gas (LFG) measurement at low pressure (20 - 40 mBarg) and about 40-60°C (100°F) variable flows require a large turndown
- Custom options available:
- Wide range of process connections
- Low and high pressure hot tap
- High temperature option 750°F (400°C)
- Self-cleaning purge for dirty flow environments
- Axial probe design for dirty flow environments
- Longer probe lengths
- Multipoint flow averaging arrays for very large ducts
- Flow-range adjustment and validation and diagnostics
- Dual-range capability
- Field validation/configuration to assure operating performance: Watch video...
- Field rangeability
- Flow totalizer and alarms
- Large LCD display and pushbutton interface, remote enclosure mounting available
- Small-diameter, 3/4 in. (19.1 mm) sensor probe
- Range of process connections (including hot tap)
- Pipe/duct sizes up to 72 inches (2M)
- An inline flow conditioned version is also available - Model 780S
- Very low pressure drop
- No moving parts
- Free computer interface software: Download now...
- Digital communications: Modbus RTU
- Accuracy: +/- 1% of reading plus +/- 0.5% of full scale
- Repeatability of +/- 0.2% of full scale
- Flow range to 20,000 sfpm (100 smps)
- Turndown: 100:1
- 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
- 100:1 turndown
- Gas temperature -40°F (-40°C) to 350°F (200°C)
- Ambient temperature -40° F to 120° F (-40° C to 50° 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
- Accuracy: +/- 1% of reading plus +/- 0.5% of full scale
- Repeatability of +/- 0.2% of full scale
- Flow range to 20,000 sfpm (100 smps)
- Turndown: 100:1
- 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
- 100:1 turndown
- Gas temperature -40°F (-40°C) to 350°F (200°C)
- Ambient temperature -40° F to 120° F (-40° C to 50° 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