HAFBSF0200C2AX5

HAFBSF0200C2AX5 Datasheet

Part	Datasheet
HAFBSF0200C2AX5	HAFBSF0200C2AX5 (pdf)

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PDF Datasheet Preview
DESCRIPTION Honeywell Zephyr Digital Airflow Sensors HAF Series-High Accuracy, provide a digital interface for reading airflow over the specified full scale flow span and temperature range. Their thermally isolated heater and temperature sensing elements help these sensors provide a fast response to air or gas flow. Zephyr 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 with an on-board Application Specific Integrated Circuit ASIC . The HAF Series is compensated over the temperature range of 0 C to 50 C [32 F to 122 F] and operates across a temperature range of -20 C to 70 C [-4 F to 158 F]. The state-of-the-art ASIC-based compensation provides digital I2C outputs with a response time of 1 ms. These sensors operate on the heat transfer principle to measure mass airflow. They consist of a microbridge Microelectronic and Microelectromechanical System MEMS with temperature-sensitive resistors deposited with thin films of platinum and silicon nitride. The MEMS sensing die is located in a precise and calculated airflow channel to provide repeatable flow response. Zephyr sensors provide customers with enhanced reliability, digital accuracy, repeatable measurements and the ability to customize sensor options to meet many specific application needs. The combination of rugged housings with a stable substrate makes these products extremely robust. They are designed and manufactured according to ISO 9001 standards. FEATURES AND BENEFITS competitive differentiator accuracy allows for very precise airflow measurement, often ideal for demanding applications with high accuracy requirements Full calibration and temperature compensation typically allow customer to remove additional components associated with signal conditioning from the PCB, reducing PCB size as well as costs often associated with those components e.g., acquisition, inventory, assembly for specific end-user needs sensitivity at very low flows allows a customer’s application to detect presence or absence of airflow stability reduces errors due to thermal effects and null shift to provide accurate readings over time, often eliminating need for system calibration after PCB mount and periodically over time pressure drop typically improves patient comfort in medical applications, and reduces noise and system wear on other components such as motors and pumps output provides more intuitive sensor signal than the raw output of basic airflow sensors, which can help reduce production costs, design, and implementation time Fast response time allows a customer's application to respond quickly to airflow change, important in critical medical i.e., anesthesia and industrial i.e., fume hood High 12-bit resolution increases ability to sense small airflow changes, allowing customers to more precisely control their application Low Vdc operating voltage option and low power consumption allow for use in battery-driven and other portable applications ASIC-based I2C digital output compatibility eases integration to microprocessors or microcontrollers, reducing PCB complexity and component count Bidirectional flow sensing capability eliminates the need for two airflow sensors, helping to reduce production costs and implementation time Insensitivity to mounting orientation allows customer to position sensor in most optimal point in the system, eliminating concern for positional effects Insensitivity to altitude eliminates customer-implemented altitude adjustments in the system, easing integration and reducing production costs by not having to purchase additional sensors for altitude adjustments 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 RoHS-compliant materials meet Directive 2002/95/EC POTENTIAL APPLICATIONS Medical Anesthesia delivery machines Ventricular assist devices heart pumps Hospital diagnostics spectrometry, gas chromatography Nebulizers Oxygen concentrators Patient monitoring systems respiratory monitoring Sleep apnea machines Spirometers Ventilators Industrial Air-to-fuel ratio Analytical instrumentation spectrometry, chromatography Fuel cells Gas leak detection Gas meters HVAC filters VAV system on HVAC systems Meteorolgy Table 1 Absolute Maximum Ratings1 Characteristic Supply voltage on output pin Storage temperature range Maximum flow change Maximum common mode pressure Parameter Vdc to Vdc V to Vsupply -40 C to 125 C [-40 F to 257 F] SLPM/s 25 psi at 25 C [77 F] CAUTION IMPROPER USE Do not use these products to sense liquid or fluid flow. Failure to comply with these instructions may result in product damage. Maximum flow 10 SLPM Note 1 Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and mechanical characteristics are not guaranteed as the maximum limits above recommended operating conditions are approached, nor will the device necessarily operate at absolute maximum ratings. Table 2 Operating Characteristics Characteristic

PDF Datasheet Preview

DESCRIPTION Honeywell Zephyr Digital Airflow Sensors HAF Series-High Accuracy, provide a digital interface for reading airflow over the specified full scale flow span and temperature range. Their thermally isolated heater and temperature sensing elements help these sensors provide a fast response to air or gas flow.

Zephyr 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 with an on-board Application Specific Integrated Circuit ASIC .

The HAF Series is compensated over the temperature range of 0 C to 50 C [32 F to 122 F] and operates across a temperature range of -20 C to 70 C [-4 F to 158 F]. The state-of-the-art ASIC-based compensation provides digital I2C outputs with a response time of 1 ms.

These sensors operate on the heat transfer principle to measure mass airflow. They consist of a microbridge Microelectronic and Microelectromechanical System MEMS with temperature-sensitive resistors deposited with thin films of platinum and silicon nitride. The MEMS sensing die is located in a precise and calculated airflow channel to provide repeatable flow response.

Zephyr sensors provide customers with enhanced reliability, digital accuracy, repeatable measurements and the ability to customize sensor options to meet many specific application needs. The combination of rugged housings with a stable substrate makes these products extremely robust. They are designed and manufactured according to ISO 9001 standards.

FEATURES AND BENEFITS competitive differentiator
accuracy allows for very precise airflow
measurement, often ideal for demanding applications with
high accuracy requirements

Full calibration and temperature compensation typically allow customer to remove additional components associated with
signal conditioning from the PCB, reducing PCB size as well
as costs often associated with those components e.g., acquisition, inventory, assembly
for specific end-user needs sensitivity at very low flows allows a customer’s
application to detect presence or absence of airflow
stability reduces errors due to thermal effects and null
shift to provide accurate readings over time, often eliminating need for system calibration after PCB mount and periodically
over time
pressure drop typically improves patient comfort in
medical applications, and reduces noise and system wear on
other components such as motors and pumps
output provides more intuitive sensor signal than the
raw output of basic airflow sensors, which can help reduce
production costs, design, and implementation time

Fast response time allows a customer's application to respond quickly to airflow change, important in critical
medical i.e., anesthesia and industrial i.e., fume hood

High 12-bit resolution increases ability to sense small airflow changes, allowing customers to more precisely control their application Low Vdc operating voltage option and low power consumption allow for use in battery-driven and other portable applications ASIC-based I2C digital output compatibility eases integration to microprocessors or microcontrollers, reducing PCB complexity and component count Bidirectional flow sensing capability eliminates the need for two airflow sensors, helping to reduce production costs and implementation time Insensitivity to mounting orientation allows customer to position sensor in most optimal point in the system, eliminating concern for positional effects Insensitivity to altitude eliminates customer-implemented altitude adjustments in the system, easing integration and reducing production costs by not having to purchase additional sensors for altitude adjustments 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 RoHS-compliant materials meet Directive 2002/95/EC

POTENTIAL APPLICATIONS

Medical Anesthesia delivery machines Ventricular assist devices heart pumps Hospital diagnostics spectrometry, gas chromatography Nebulizers Oxygen concentrators Patient monitoring systems respiratory monitoring Sleep apnea machines Spirometers Ventilators

Industrial Air-to-fuel ratio Analytical instrumentation spectrometry, chromatography Fuel cells Gas leak detection Gas meters HVAC filters VAV system on HVAC systems Meteorolgy

Table 1 Absolute Maximum Ratings1

Characteristic Supply voltage on output pin Storage temperature range Maximum flow change Maximum common mode pressure

Parameter Vdc to Vdc V to Vsupply -40 C to 125 C [-40 F to 257 F]

SLPM/s 25 psi at 25 C [77 F]

CAUTION

IMPROPER USE Do not use these products to sense liquid or fluid flow. Failure to comply with these instructions may result in product damage.

Maximum flow
10 SLPM

Note 1 Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and
mechanical characteristics are not guaranteed as the maximum limits above recommended operating conditions are approached, nor will the device necessarily operate at absolute maximum ratings.

Table 2 Operating Characteristics

Characteristic

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Datasheet ID: HAFBSF0200C2AX5 636453