Description
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 โfield-validateโ your meterโs calibration
Sierra Instrumentsโ FastFloโข 620S Immersible Thermal Mass Flow Meter provides an economical solution for gas flow measurement applications. The meterโs 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 meterโs 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 Sierraโs Smart Interfaceโข Windowsโข 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
Specifications
- Measure air and all clean inert gases
- Accuracy: +/- 1% of full scale
- Repeatability of +/- 0.2% of full scale
- Pipe sizes from 3.7โณ (9.3cm) up to 24โณ (61cm)
- Small-diameter, 3/8-inch (9.5mm) sensor probe
- 100:1 turndown
- Temperature:
- Gas: -40ยฐF to 176ยฐF (-40ยฐC to 80ยฐC)
- Ambient: -40ยฐF to 120ยฐF (-40ยฐC to 50ยฐC)
- 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 0โ5 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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