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Honeywell has announced the Honeywell Zephyr analogue airflow sensors that provide an analogue interface for reading airflow over the specified full-scale flow span and temperature range.

These sensors are the analogue version of the Honeywell Zephyr digital airflow sensors that were launched in April 2010.

This version offers the same features as the digital version and is designed for customers that are either replacing legacy analogue parts or prefer to operate with an analogue sensor.

Honeywell said that its Zephyr analogue airflow sensors offer features such as: a 2.5 per cent accuracy that allows for precise airflow measurement; customisation, which allows the sensor to be tailored to meet specific end-user needs; high sensitivity at very low flows to enable the detection of the presence or absence of airflow in the application; high stability to reduce errors due to thermal effects and null shift to provide accurate readings over time and periodically over time; low-pressure drop, which typically improves patient comfort in medical applications and reduces noise and system wear in components such as motors and pumps; and linear output that provides a more intuitive sensor signal than the raw output of basic airflow sensors, which can help customers reduce production costs and implementation time.

The Honeywell Zephyr analogue airflow sensors occupy less space on the PCB.

Their low 3.3V DC voltage option and low power supply requirements allow for use in battery-powered and portable applications.

Honeywell Zephyr analogue airflow sensors are designed to measure mass flow of air and other non-corrosive gases.

They are available in standard flow ranges and are fully calibrated and temperature compensated.

They provide an analogue interface for reading airflow over the specified full-scale flow span and temperature range, and their thermally isolated heater and temperature sensing elements help provide a fast response to air or gas flow.

Potential medical applications include anesthesia delivery machines, hospital diagnostics (spectrometry, gas chromatography), nebulizers, oxygen concentrators, patient monitoring systems (respiratory monitoring), sleep apnoea machines, spirometers, ventilators and ventricular assist devices.

Potential industrial applications include air-to-fuel ratio, analytical instrumentation (spectrometry, chromatography), fuel cells, gas leak detection, gas meters, HVAC filters, meteorology equipment and variable air volume (VAV) systems on HVAC systems.

Honeywell Sensing and Control

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