Sierra Instruments, Inc.

- Model 730 - Fast-Response, Ultra-Stable Mass Flow Meter

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Designed for applications that require fast response and low flow sensitivity, the 730 FastTrak is an industry proven work-horse that provides +/- 1.0% of full-scale accuracy, and +/-0.2% of full-scale repeatability over a wide temperature and pressure range. With a very small footprint, 6.4: x 1.1 with a 3.1” to 5” F/B, the in-line mass flow meter is well suited for OEM applications. The fast-response (200 ms) flow meter measures flow rates of non-corrosive gases, including methane gas, in ranges from .5 to 50 scfm, and delivers a linear output signal proportional to total gas mass flow rate. This direct mass flow monitoring method eliminates the need for separate temperature and pressure inputs, improves measurement accuracy and helps to reduce system cost.The 730 is available in a water-resistant NEMA 2 enclosure, which can be mounted directly or remotely.

  • Fast 200 millisecond response to changes in flow rate
  • Field-proven ultra-stable glass/ceramic flow sensor
  • Small footprint for in-line bodies at ¼ inch to ¾  inch
  • Water-resistant NEMA 2 enclosure (indoor applications only)
  • Low pressure loss

  • Ideal for OEM applications
  • 200 millisecond response to changes in flow rate
  • Ultra stable Glass/Ceramic flow sensor
  • Exceptional sensitivity over a wide range of flows
    • Minimum < 0.5 slpm (0.02 scfm)
    • Maximum > 700 slpm (25 scfm)
    • Always calibrated to individual needs
  • Low pressure loss
  • Available in 316 Stainless Steel and Anodized Aluminum
  • Outstanding performance at an economical price!
  • Direct mass flow monitoring eliminates need for separate temperature and pressure inputs
  • Large installed base

  • Accuracy:  +/- 1.0% of full scale over 32° to 120°F (0° to 50°C) and 5 to 30 psia (0.3 to 2 barg)
  • Repeatability: +/- 0.2% of full scale
  • Temperature Coefficient:
  • +/- 0.02% of reading per °F within +/- 50°F (25°C) of customer specified conditions
  • +/- 0.03% of reading per °F within +/- 50° to 100°F (25°C  to 50°C) of customer specified conditions
  • Pressure Coefficient: 0.02% per psi for air, consult factory for other gases
  • Response Time: 200 milliseconds to 63% of final velocity value
  • Most non-combustible, non-corrosive gases
  • Gas pressure up to 150 psig (10 barg)
  • Pressure drop negligible
  • Gas Temperature: 15°F to 176°F(-10°C to 80°C)
  • Ambient Temperature:32°F to 120°F (0°C  to 50°C) of customer specified conditions
  • Output signal linear 0-5 VDC or 0-10 VDC (choice of one)
  • 316 stainless steel or anodized aluminum; glass-coated sensor; epoxy; Viton® 'O'-rings

Accuracy
+/- 1.0% of full scale over 32° to 120°F (0° to 50°C) and 5 to 30 psia (0.3 to 2 barg)

Repeatability
+/- 0.2% of full scale

Temperature Coefficient
+/- 0.02% of reading per °F within +/- 50°F (25°C) of customer specified conditions
+/- 0.03% of reading per °F within +/- 50° to 100°F (25°C to 50°C) of customer specified conditions

Pressure Coefficient
0.02% per psi for air, consult factory for other gases

Response Time
200 milliseconds to 63% of final velocity value

Gases
Most non-combustible, non-corrosive gases including Air, Argon, CO2 Helium and Nitrogen

Gas Pressure
Maximum 120 psig (8 barg)

Mass Flow Rate
Standard flow rates shown below. Lower and higer flow rates are available upon request. Ranges change with other gases (contact factory).

Wetted Material
316 stainless steel or anodized aluminum; glass-coated sensor; epoxy; Viton® 'O'-rings

Enclosure
Anodized aluminum NEMA 2

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