Sierra 620S FastFlo Insertion Thermal Mass Air Flow Sensor

Sierra 620S FastFlo Insertion Thermal Mass Air Flow Sensor

Sierra 620S FastFlo Insertion Thermal Mass Air Flow Sensor 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

Sierra Instruments’ FastFlo™ 620S Immersible Thermal Mass Flow Meter provides an economical solution for gas flow measurement applications. The meter’s sensor offers long-term reliability and 200 millisecond response to changes in flow rate.

The versatile microprocessor-based transmitter integrates the functions of flow-range adjustment, meter validation and diagnostics in a probe-mounted NEMA 4X (IP65) housing. Mass flow rate and totalized flow, as well as other configuration variables, can be displayed on the meter’s optional 2 x 12 backlit LCD panel.

The meter also provides an optical/galvanic isolated 4-20 mA output and two alarm outputs. The programmable transmitter is easily configured via RS-232 and Sierra’s Smart Interface™ Windows™ based software or three push buttons in the device. Modbus RTU is also supported. The 620S is suitable for pipes or ducts from 1-inch to 48-inches (DN50 to DN1200).

Sierra 620S FastFlo Insertion Thermal Mass Air Flow Sensor Features

  • Fast response flow meter ideal for gas mass flow measurement applications
  • 200 millisecond response to changes in flow rate
  • Smart electronics permit field adjustment of critical flow meter settings
  •  Field validation of flow meter calibration
  • Outstanding rangeability
  • Optional 2 x 12 backlit LCD display
  • Minimal flow blockage and low pressure drop
  • CE approved
  • Optional Modbus RTU

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Specifications

  • Measure air and all clean inert gases
  • Accuracy: +/- 1% of full scale
  • Repeatability of +/- 0.2% of full scale
  • Pipe sizes from 3.7″ (9.3cm) up to 24″ (61cm)
  • Small-diameter, 3/8-inch (9.5mm) sensor probe
  • 100:1 turndown
  • Temperature:
    • Gas: -40°F to 176°F (-40°C to 80°C)
    • Ambient: -40°F to 120°F (-40°C to 50°C)
  • Response time is 200 milliseconds to achieve 63% of final value
  • Power supply 15 to 18 VDC (regulated), 625 mA draw maximum
  • Output signals: Linear 0–5 VDC and 4-20 mA
  • User definable pulse output for totalized flow
  • Digital communications solutions include:  Modbus RTU
  • Enclosure NEMA 4X (IP65); remote electronics mounting available
  • CE approved

Download Datasheet: Sierra Fast-Response Insertion Thermal Mass Air Flow Sensor

Reference: sierrainstruments.com

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