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Honeywell HAF Series Zephyr Digital Airflow Sensors

Honeywell HAF Series Zephyr Digital Airflow Sensors feature a digital interface for reading airflow over specified full-scale flow and compensated temperature ranges, as well as thermally isolated heaters and temperature sensing elements that aid in providing a quick response to air or gas flow. The HAF airflow sensors include a broad airflow range, efficient sensitivity at very low flows, and a high 12-bit resolution that improves the ability to detect minute airflow changes. These HAF digital airflow sensors offer an operating temperature range from -20°C to +70°C and are available in supply voltage ranging from 3Vdc to 10Vdc. Ideally, HAF airflow sensors are used in anesthesia delivery machines, ventilators, fuel cells, process control gas monitoring, and vacuum pump monitoring.

Features

ASIC-based I2C digital output
CE and UKCA certified
Choice of port styles:
- G 3/8 female threaded fitting
- Manifold mount, 22mm OD tapered male fitting
Fast response time
High 12-bit resolution increases the ability to sense small airflow changes
High sensitivity at very low flows
High stability reduces errors due to thermal effects and null shift
Linear output provides a more intuitive sensor signal than the raw output of basic airflow sensors
RoHS-compliant
Wide airflow range

Applications

Consumer
Industrial:
- Air-to-fuel ratio
- Analytic instrumentation (spectrometry and chromatography)
- Fuel cells
- Fume hoods
- Gas leak detection
- Process control gas monitoring
- Vacuum pump monitoring
Medical:
- Anesthesia delivery machines
- Laparoscopy
- Spirometers
- Ventilators
- Ventricular assist devices (heart pumps)

Technical Specifications

Parameters		Values
Flow response time		1ms
Maximum power rating	3Vdc	60mW
Maximum power rating	10Vdc	200mW
Maximum supply current		20mA
Operating temperature range		-20°C to +70°C
Standard flow ranges		10, 15, 20, 50, 100, 200, and 300SLPM
Supply voltage range		3Vdc to 10Vdc