Honeywell Zephyr™ Analog Airflow Sensors (HAF Series-High Accuracy), provide an analog interface for reading airflow over the specified full scale flow span and temperature range. These new analog sensors join the Honeywell Zephyr™ Digital Airflow Sensors that were launched in April 2010. The analog version offers the same features, benefits, value to customers, and potential applications as the digital version. The Zephyr™ analog airflow sensor is designed for customers that are either replacing legacy analog parts or who prefer to operate with an analog sensor.
BENEFITS
• Deliver enhanced functionality driven by our customers’ product performance needs
• Customizable devices provide enhanced reliability, accuracy and repeatable measurements to meet many
application specifications
• Offer key competitive advantages not found in other analog airflow sensors available in the industry
today
• Designed to measure mass flow of air and non-corrosive gases
• Available in standard flow ranges, and are fully calibrated and temperature compensated with an on-board
Application Specific Integrated Circuit (ASIC)
• Provide an analog interface for reading airflow over the specified full scale flow span and temperature
range
• Thermally isolated heater and temperature sensing elements help provide a fast response to air or gas
flow
provide value for our customers by:
(
= competitive differentiator)
Meet
high accuracy specifications: High ± 2.5% accuracy allows for very precise airflow measurement,
often ideal for demanding applications with high accuracy requirements
Customizable: Allows the sensor to be designed to meet specific end-user needs.
High
sensitivity at very low flows: Allows the customer’s application to detect presence or absence of
airflow.
High
stability: Reduces errors due to thermal effects and null shift to provide accurate readings over
time, often eliminating need for system calibration after printed circuit board (PCB) mount and periodically
over time.
Improves
patient comfort: Low pressure drop typically improves patient comfort in medical applications, and
reduces noise and system wear in components such as motors/pumps.
Saves
customers time and money: Linear output provides a more intuitive sensor signal than the raw output
of basic airflow sensors, often eliminating the need for customers having to linearize the output which can
help to reduce production costs, design, and implementation time.
• Small size: Occupies less space on PCB, allowing easier fit and potentially
reducing production costs; PCB size may also be reduced for easier fit into space-constrained
applications.
• Flexible: Low 3.3 Vdc voltage option and low power supply allows for
battery-driven and other portable applications.
Medical
• Anesthesia delivery machines
• Hospital diagnostics (spectrometry, gas chromatography)
• Nebulizers
• Oxygen concentrators
• Patient monitoring systems (respiratory monitoring)
• Sleep apnea machines
• Spirometers
• Ventilators
• Ventricular assist devices
Industrial
• Air-to-fuel ratio
• Analytical instrumentation spectrometry, chromatography)
• Fuel cells
• Gas leak detection
• Gas meters
• HVAC filters
• VAV system on HVAC systems
