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Sierra Fast-Response FastFlo™ 620S Insertion Thermal Mass Air Flow Sensor
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Sierra Fast-Response FastFlo™ 620S Insertion Thermal Mass Air Flow Sensor

Sierra Fast-Response FastFlo™ 620S Insertion Thermal Mass Air Flow Sensor

Product Code: FastFlo 620S

Manufacturer: Sierra Instruments


The FastFlo™ 620S is an insertion thermal mass air flow sensor designed to give you a highly reliable, responsive and affordable mass flow measurement for light industrial applications where a NEMA 4X (IP65) enclosure is acceptable. This mass airflow sensor:

  • Includes a compact, versatile, microprocessor-based transmitter
  • Integrates flow-range adjustments, and meter validation and diagnostics
  • Gives you the ability to “field-validate” your meter’s calibration

How does a thermal mass flow meter for industrial applications work? An insertion thermal mass air flow sensor provides precision measurement of total mass flow rate of gases flowing through closed conduits such as pipes and ducts. Thermal dispersion technology for direct mass flow measurement features: no pressure or temperature compensation needed, no moving parts, low pressure drop, and high turndown.

  • Increase efficiency with fast response time within 200 milliseconds
  • Optimized air, nitrogen, and inert gas measurement for 1, 2, 3, 4 inch sch. 40 pipe sizes
  • Wide flow ranges from 0 to 42,000 scfh
  • Easily install in the field or retrofit
Datasheet Download
Instruction Manual Download
Product Line Catalogue Download
How Thermal Mass Flow Meter Technology Works Watch
In-Situ Thermal Mass Flow Meter Calibration Validation Watch

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