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Honeywell Sensing & Control HAF Zephyr Digital and Analog Airflow Sensors

Honeywell HAF Zephyr™ Digital Airflow Sensors provide high sensitivity and accuracy (2.5%) for very precise measurements of airflow (or absence of airflow) and other non-corrosive gases in medical and industrial applications. Honeywell HAF Sensors feature high stability to reduce errors due to thermal effects and null shift to provide accurate readings over time. The high stability often eliminates the need for system calibration after PCB mounting and periodically again over time.

HAF series sensors offer enhanced reliability, digital accuracy, and repeatable measurements. The combination of rugged housings with a stable substrate makes these sensors extremely robust and the sensors meet ISO 9001 standards. Also available now is the Honeywell Zephyr™ HAF Series of Analog Airflow Sensors that provide an analog interface for reading airflow over the specified full-scale flow span and temperature range. The analog version was designed for users who are either replacing legacy analog parts or who prefer to operate with an analog sensor. With the newest models, this series offers the industry's broadest airflow sensing range, from as low as 10 SLPM to as high as 300 SLPM.

Features

  • High ±2.5% accuracy
  • Full calibration and temperature compensation
  • Customizable for specific end-user needs
  • High sensitivity at very low flows
  • High stability
  • Low pressure drop
  • Linear output provides more intuitive sensor signal
  • Fast response time
  • High 12-bit resolution
  • Low 3.3VDC operating voltage
  • ASIC-based I2C digital output
  • Bidirectional flow sensing capability
  • Insensitivity to mounting orientation
  • Insensitivity to altitude
  • Small PCB size
  • RoHS-compliant materials meet Directive 2002/95/EC

Applications

  • Anesthesia delivery machines
  • Hospital diagnostics (spectrometry, gas chromatography)
  • Nebulizers
  • Oxygen concentrators
  • Patient monitoring systems (respiratory monitoring)
  • Sleep apnea machines
  • Spirometers
  • Ventilators
  • Laparoscopy
  • Ventricular assist devices (heart pumps)
  • Ventricular assist devices
  • Air-to-fuel ratio
  • Analytical instrumentation (spectrometry, chromatography)
  • Fuel cells
  • Gas leak detection
  • Gas meters
  • HVAC filters
  • VAV system on HVAC systems
  • Fume hoods
  • Process control gas monitoring
  • Vacuum pump monitoring

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Published: 2010-04-09 | Updated: 2022-03-11