Honeywell HAFBLF0400CAAX3

The Honeywell Zephyr™ HAF Series sensors provide an analog interface for reading airflow within a specified full-scale flow range and compensated temperature range. Thermally isolated heater and temperature sensing elements help these sensors respond rapidly to air or gas flow. Zephyr sensors are designed to measure mass flow of air and other non-corrosive gases. Standard flow ranges are ±50, ±100, ±200, ±400, or ±750 SCCM. Custom flow ranges are also available. The sensors are fully calibrated and temperature compensated via an onboard ASIC. The HAF Series is compensated over a temperature range of 0°C to 50°C [32°F to 122°F] and operates over a temperature range of -20°C to 70°C [-4°F to 158°F]. Advanced ASIC-based compensation provides an analog output with a response time of 1 ms.

• Total error band as low as ±0.25% FSS for precise airflow measurement
• Fast response time enables rapid reaction to airflow changes in customer applications
• Wide airflow range: Zephyr measures mass flow in standard ranges of ±50, ±100, ±200, ±400, or ±750 SCCM, or custom flow ranges
• Customizable flow ranges and configurable package styles to meet specific end-user requirements
• Full calibration and temperature compensation typically allow customers to remove additional signal conditioning components from the PCB
• High sensitivity at very low flow rates provides faster response time when flow starts or stops
• Linear output delivers a more intuitive sensor signal than the raw output of basic airflow sensors
• High stability reduces errors caused by thermal effects and zero drift for long-term accurate readings
• Low pressure drop typically improves patient comfort in medical applications and reduces noise and system wear on other components such as motors and pumps
• 0.039% FS resolution enhances the ability to detect minor airflow changes
• Low 3.3 Vdc operating voltage option and low power consumption enable use in battery-powered and other portable applications
• Orientation insensitivity allows customers to position the sensor at the most optimal location within the system
• Altitude insensitivity eliminates customer-implemented altitude compensation in the system
• Small form factor occupies less space on the PCB

• Anesthesia delivery machines
• Ventricular assist devices
• Hospital diagnostics
• Nebulizers
• Oxygen concentrators
• Air-fuel ratio
• Analytical instruments
• Fuel cells
• Gas leak detection
• Variable air volume systems