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Steel Mass 640S Flow Meter

  • Direct mass flow monitoring eliminates need for separate temperature and pressure inputs
  • Accuracy +/- 1% of reading plus 0.5% of full scale
  • Patented Dry-Sense™ technology eliminates sensor drift
  • State-of-the-art calibration facility insures a highly accurate calibration that matches the application
  • Field validation of meter electronics and sensor resistance verifies flow meter performance
  • One-second response to changes in flow rate
  • FM, CSA, PED, ATEX and GOST R/RTN certified for hazardous areas
  • CE approved
  • High temperature option to 750°F (400°C) available
  • Multipoint options available
  • Integrated self-cleaning purge option available for dirty flows
  • Low and high pressure hot taps available
  • Optional HART, Modbus and Profibus DP available, Foundation Fieldbus (pending)

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Sierra Instruments’ SteelMass® Model 640S immersible thermal mass flow meter is designed for the toughest industrial gas flow measurement applications.

The versatile microprocessor-based transmitter integrates the functions of flow measurement, flow-range adjustment, meter validation and diagnostics in either a probe-mounted or remote housing. Mass flow rate and totalized flow, as well as other configuration variables, are displayed on the optional 2 x 12 LCD display. The programmable transmitter is easily configured via an RS-232 communication port and Sierra’s Smart Interface™ software, or via the display and magnetic switches on the instrument.

Sierra’s state-of the-art calibration facility insures that the calibration will match the application, and our patented Dry-Sense™ thermal sensor insures the Model 640S will hold this calibration over time.

Sierra’s Smart Interface™ software guides you through a procedure to fully validate instrument performance, thus field-verifying meter functionality. The meter is available with a variety of input power, output signal, mounting and packaging options

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