HAFBSD200CAX5 [HONEYWELL]
HONEYWELL ZEPHYR DIGITAL AIRFLOW SENSORS: HAF SERIES-HIGH ACCURACY; HONEYWELL ZEPHYR数字气流传感器： HAF系列 - 高精度
| 型号： | HAFBSD200CAX5 |
| 厂家： | 
Honeywell |
| 描述： | HONEYWELL ZEPHYR DIGITAL AIRFLOW SENSORS: HAF SERIES-HIGH ACCURACY |
| 文件： | 总6页 (文件大小：555K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
™
DESCRIPTION
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.
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).
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.
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.
FEATURES AND BENEFITS (= competitive differentiator)
High ±2.5% 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)
High 12-bit resolution increases ability to sense small airflow
changes, allowing customers to more precisely control their
application
Low 3.3 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
Customizable for specific end-user needs
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
High sensitivity at very low flows allows a 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 PCB mount and periodically
over time
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
Low pressure drop typically improves patient comfort in
medical applications, and reduces noise and system wear on
other components such as motors and pumps
Linear 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)
applications
RoHS-compliant materials meet Directive 2002/95/EC
™
POTENTIAL APPLICATIONS
Medical
Industrial
Air-to-fuel ratio
Anesthesia delivery machines
Analytical instrumentation (spectrometry, chromatography)
Ventricular assist devices (heart pumps)
Hospital diagnostics (spectrometry, gas chromatography)
Nebulizers
Fuel cells
Gas leak detection
Gas meters
Oxygen concentrators
HVAC filters
Patient monitoring systems (respiratory monitoring)
Sleep apnea machines
VAV system on HVAC systems
Meteorolgy
Spirometers
Ventilators
Table 1: Absolute Maximum Ratings1
Characteristic
Supply voltage
Parameter
-0.3 Vdc to 6.0 Vdc
-0.3 V to Vsupply
CAUTION
IMPROPER USE
Voltage on output pin
Storage temperature range
Maximum flow change
Maximum common mode pressure
Maximum flow
Do not use these products to sense liquid or
fluid flow.
Failure to comply with these instructions
may result in product damage.
-40 C to 125 C [-40 F to 257 F]
5.0 SLPM/s
25 psi at 25 C [77 F]
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
Supply voltage
Supply current
Power:
Parameter
3.3 Vdc 10%; 5.0 Vdc 10%
16 mA max.
Note
3.3 Vdc
23 mW typ.
5.0 Vdc
38 mW typ.
Operating temperature range
Compensated temperature range
Accuracy:
-20 C to 70 C [-4 F to 158 F]
0 C to 50 C [32 F to 122 F]
1
2, 4
forward flow
reverse flow
±0.25% FSS or ±2.5% of reading, whichever is greater
±0.25% FSS or ±9% of reading, whichever is greater
Total error band:
forward flow:
3, 4
±0.25% FSS or ±4.5% of reading, whichever is greater
reverse flow:
±0.25% FSS or ±9% of reading, whichever is greater
Null accuracy
Response time
Resolution
±0.02% FSS
1 ms typ.
12 bit min.
4, 10
5
Start up time
17 ms
30 ms
gaseous nitrogen
I2C, fast mode (400 kHz)
6
7
8
9
Warm up time
Calibration media
Bus standards
Null stability
±0.01% FSS maximum deviation from null output after 1000 hours at 25 C
Reverse polarity protection
no
Notes:
1. Custom and extended compensated temperature ranges are possible. Contact Honeywell for details.
2. Accuracy is the maximum deviation from the nominal digital output over the compensated flow range at a reference temperature of 25 C.
Errors include offset, span, non-linearity, hysteresis and non-repeatability (see Figure 3 for the Accuracy Error Band vs Flow).
3. Total error band includes all errors over the compensated flow range including all effects due to temperature over the compensated
temperature range (see Figure 4 for the Total Error Band).
4. Full Scale Span (FSS) is the algebraic difference between the digital output at the forward Full Scale (FS) flow and the digital output at the
reverse FS flow. Forward flow is defined as flow from P1 to P2 as shown in Figure 4. The references to mass flow (SCCM) refer to gas flows at
the standard conditions of 0 C and atmospheric pressure 760 (101.3 kPa).
5. Response time: time to electrically respond to any mass flow change at the microbridge airflow transducer (response time of the transducer
may be affected by the pneumatic interface).
6. Start-up time: time to first valid reading of serial number proceeding streaming 14-bit flow measurements.
7. Warm-up time: time to the first valid flow measurement after power is applied.
8. Default calibration media is dry nitrogen gas. Please contact Honeywell for other calibration options.
9. Refer to Honeywell Technical Note for I2C protocol information.
10. Null accuracy is the maximum deviation in output at 0 SCCM from the ideal transfer function over the compensated temperature range. This
includes offset errors, thermal airflow hysteresis and repeatability errors.
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Table 3. Environmental Characteristics
Characteristic
Humidity
Parameter
0% to 95% RH, non-condensing
100 g, 11 ms
Shock
Vibration
15 g at 20 Hz to 2000 Hz
ESD
Class 3B per MIL-STD 883G
Radiated immunity
Level 3 from (80 MHz to 1000 MHz) per spec IEC61000-4-3
Table 4. Wetted Materials
Characteristic
Covers
Parameter
high temperature polymer
PCB
Substrate
Adhesives
epoxy
Electronic components
Compliance
silicon, gold
RoHS, WEEE
Table 5. Recommended Mounting and Implementation
Characteristic
Parameter
5-40
0.68 N m [6 in-lb]
CAUTION
Mounting screw size
Mounting screw torque
Tubing for long port style
LARGE PARTICULATE DAMAGE
Use a 5-micron filter upstream of the sensor
to keep media flow through the sensor free of
condensing moisture and particulates. Large,
high-velocity particles or conductive particles
may damage the sensing element.
Failure to comply with these instructions
may result in product damage.
70 durometer, size 0.125 inch inside
diameter, 0.250 inch outside diameter silicone
tubing
O-ring for short port style
O-ring for long port style
Filter recommendation
AS568A, Size 7, Silicone, Shore A 70
AS568A, Size 10, Silicone, Shore A 70
5-micron filter upstream of the sensor
Figure 1. Nomenclature and Order Guide
Example Catalog
Listing
HAFBLS0200C2AX5 =
High accuracy airflow
sensor, bidirectional
forward flow optimized,
long port style, snap
mount housing, 200
SCCM, digital I2C output
with 0X29 address, 10%
to 90% transfer function,
5.0 Vdc supply voltage.
Customer-specific
Requirements
Apart from the general
configuration required,
other customer-specific
requirements are also
possible. Please contact
Honeywell.
Note:
1. The Long Port Port Style with the Snap Mount Housing Style is not a valid configuration.
Honeywell Sensing and Control
3
™
Figure 2. Nominal Digital Output
Ideal Transfer Function
Digital Output Code = 16383 * [0.5 + 0.4 * (Flow Applied/Full
Scale Flow)]
Flow Applied = Full Scale Flow * [(Digital Output Code/16383)
- 0.5]/0.4
Figure 3. Accuracy Error Band
Figure 4. Total Error Band
Figure 5. Long Port Style Flow vs Pressure
Flow
(SCCM)
-200
-150
-100
-50
Pressure Drop
(inches H2O)
-0.019
-0.013
-0.007
-0.001
0
0.000
50
0.005
100
0.010
150
0.016
200
0.022
Figure 6. Short Port Style Flow vs Pressure
Flow
(SCCM)
-200
-150
-100
-50
Pressure Drop
(inches H2O)
-0.470
-0.284
-0.143
-0.045
0
0.000
50
0.048
100
0.139
150
0.287
200
0.452
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Figure 7. Wave Solder Profile
300
250
200
150
100
50
Max. temp. = 243 °C
Max. temp. = 205 °C
Housing temp. (top of device)
Pin temp. (bottom of device)
0
0
20
40
60
80
100
Time (s)
Figure 8. Mounting Dimensions (For reference only: mm [in]). Additional port and housing styles available.
Long Port Style, Fastener Mount
Short Port Style, Snap Mount
22,00
[0.87]
MODEL NUMBER
LOT CODE
DIA. 2,30
[0.09]
MODEL NUMBER
LOT CODE
TERMINAL SIDE
7,20
[0.28]
3,0
[0.12]
2,00 TYP.
[0.079]
TERMINAL SIDE
1,00
[0.04]
6,50
[0.26]
10,40
[0.41]
3,50
[0.14]
1
2 3
4
26,00
[1.02]
7,20
[0.28]
2,00 TYP.
[0.079]
4,60
10,3
[0.40]
3,3
[0.13]
1,00
[0.04]
[0.18]
3,00
[0.12]
4,80
[0.19]
1
2 3 4
10,00
[0.39]
1,80
[0.071]
10,3
[0.40]
12,8
[0.50]
2X DIA. 5,35
[0.21]
6,50
[0.26]
36,00
[1.42]
2,50
[0.10]
2X DIA. 2,2 [0.086] THRU
HOLES FOR MOUNTING
7,20
[0.28]
18,00
[0.71]
4X DIA. 0,812
[0.032]
19,90
[0.78]
22,0
[0.866]
3,80
[0.150]
0,65
1
2
3
4
19,90
[0.78]
2X DIA. 3,40
[0.026]
7,20
[0.28]
[0.13]
1
2
3
4
6,35
[0.25]
4,00
2X 7,20
[0.28]
[0.157]
4X DIA. 0,812
[0.032]
12,70
[0.50]
28,80
[1.13]
2X DIA. 3,40
[0.134]
6,35
[0.25]
2X 2,50
[0.098]
36,00
[1.42]
2X PORTS
12,70
[0.50]
2X PORTS
SENSOR FOOTPRINT
VIEWED FROM TERMINAL SIDE
28,80
[1.13]
26,00
[1.024]
AIRFLOW DIRECTION, PORT SIDE
SENSOR FOOTPRINT
VIEWED FROM TERMINAL SIDE
AIRFLOW DIRECTION, PORT SIDE
Pinout (digital function)
1 = SCL
2 = Vsupply
3 = ground
4 = SDA
Honeywell Sensing and Control
5
WARNING
PERSONAL INJURY
WARNING
MISUSE OF DOCUMENTATION
The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective. The
foregoing is buyer s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Asia Pacific
+65 6355-2828
+65 6445-3033 Fax
+44 (0) 1698 481481
+44 (0) 1698 481676 Fax
+1-305-805-8188
Europe
Latin America
USA/Canada
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
+1-305-883-8257 Fax
+1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax
Sensing and Control
Honeywell
1985 Douglas Drive North
008178-3-EN IL50 GLO Printed in USA
May 2010
2010 Honeywell International Inc. All rights reserved.
Golden Valley, MN 55422
www.honeywell.com
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