Overview

North America's #1 selling inline thermal mass flow meter (2009 Flow Research, Boston MA) delivers precise measurements with heavy-duty industrial gas mass and air flow meter measurement applications.  Choose from a wide variety of inline and insertion thermal mass air flow meters for precision CFM (cubic feet per minute) measurement of gas mass flow rate in industrial environments. 

Product Benefits

• Built-in flow conditioning elements drastically reduce upstream straight-run requirements

• Features our no-drift DrySense velocity sensor

• Lifetime warranty on sensor

• 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

• Wide range of materials like Kynar and Hastalloy

• Self-cleaning purge  for dirty flow environments

• Ultra-High Purity 7-10 Ra to 20-25Ra interior finishes

• Flow-range adjustment and validation and diagnostics

• Dual-range capability

• Field validation/configuration to assure operating performance

• Field rangeability

• Flow totalizer and alarms

• Large LCD display and pushbutton interface, remote enclosure mounting available

• An insertion version for pipes/ducts up to 72" (2M) available - Model 640S

• Very low pressure drop

• No moving parts

• Free computer interface software

• Digital communications: Foundation Fieldbus, HART, Modbus RTU, Profibus DP

   

Specifications

• Accuracy: +/- 1% of reading plus +/-0.5% of full scale

• Repeatability of +/- 0.2% of full scale

• Pipe sizes from 1.0" to 8.0"  (2.5cm  to 20.3cm) 

• 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

• 100:1 turndown

• Temperature:

• Gas: -40°F (-40°C) to 350°F (200°C)

• Ambient: -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

• 316 stainless-steel construction (Other materials available)

• Output signals: RS-232, 0–5 VDC, 0-10 VDC, 4–20 mA  

• User definable pulse output for totalized flow

• Digital communications solutions include: 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)

• ATEX

• CE

• PED (EU)

• GOST R (Russian Federation)

• Chinese Pattern Approval (China)