Honeywell | Digital Airflow SensorsHAF Series-High Accuracy, ±50 SCCM to ±750 SCCM | Installation Instruction | Honeywell Digital Airflow SensorsHAF Series-High Accuracy, ±50 SCCM to ±750 SCCM Installation Instruction

Honeywell Digital Airflow SensorsHAF Series-High Accuracy, ±50 SCCM to ±750 SCCM Installation Instruction
Installation Instructions for the
Honeywell ZephyrTM Digital Airflow Sensors
HAF Series–High Accuracy
±50 SCCM to ±750 SCCM
GENERAL INFORMATION
50045178
Issue E
Table 2. Operating Specifications
CAUTION
IMPROPER USE
Do not use to sense liquid flow.
Failure to comply with these instructions may result in
product damage.
CAUTION
IMPROPER CLEANING
• Avoid cleaning the sensor; however, if it must be cleaned use
isopropyl alcohol and dry the device thoroughly before use.
Cap the ports or connect housing to the ports before cleaning
the sensor with alcohol. Using alcohol may remove the text on
the sensor label; however, the label ID is hard coded inside the
sensor.
• Do not use III Tri-chloroethane, methylene chloride, methyl
pyrrolidone, or any oxidizing type acid such as formic acid.
• Do not use ultrasonic cleaning.
Failure to comply with these instructions may result in
product damage.
CAUTION
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.
Table 1. Absolute Maximum Ratings
Characteristic
Supply voltage:
3.3 Vdc
5.0 Vdc
Power:
3.3 Vdc
5.0 Vdc
Compensated temperature
range
Operating temperature
range
Warm-up time
Calibration media
Bus standards
Parameter
Notes
3.3 Vdc ±10%
5.0 Vdc ±10%
—
40 mW max.
65 mW max.
0 °C to 50 °C
[32 °F to 122 °F]
-20 °C to 70 °C
[-4 °F to 158 °F]
30 ms
1
4
5
no
—
Reverse polarity protection
Notes:
1. Maximum power: Is measured under the conditions of the highest supply
voltage, Vsupply + 10%, 70 °C, full scale flow and with the minimum load
specified for that supply voltage.
2. Custom and extended compensated temperature ranges are possible.
Contact Honeywell for details.
3. Warm-up time: The time to the first valid flow measurement after power is
applied.
4. Default calibration media is dry nitrogen gas. Please contact Honeywell for
other calibration options.
5. Refer to the Technical Note “I2C Communications with Honeywell Digital
Airflow Sensors” for I2C protocol information.
Table 3. Environmental Characteristics
Characteristic
Humidity
Shock
Vibration
ESD
Parameter
0% to 95% RH, non-condensing
100 g, 11 ms
15 g at 20 Hz to 2000 Hz
Class 3B per MIL-STD 883G
Table 4. Wetted Materials
Supply voltage
-0.3 Vdc to 6.0 Vdc
Covers
Voltage on I/O output pin
-0.3 Vdc to Vsupply
Substrate
PCB
Adhesives
epoxy
Maximum common mode pressure
Maximum flow
3
I2C fast mode (up to 400 kHz)
Parameter
Maximum flow change
—
gaseous nitrogen
Characteristic
Storage temperature range
2
-40 °C to 125 °C [-40 °F to 257 °F]
5.0 SLPM/s
25 psi at 25 °C [77 °F]
10 SLPM
NOTICE
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 necessary operate at
absolute maximum ratings.
Characteristic
Electronic components
Compliance
Parameter
high temperature polymer
silicon, gold
RoHS, WEEE
Table 5. Recommended Mounting and Implementation
Characteristic
Mounting screw:
size
torque
Silicone tubing for long
port style
O-ring:
short port style
long port style
Filter
Parameter
5-40
0.68 N m [6 in lb]
70 durometer; 0.125 inch inside
diameter, 0.250 inch outside diameter
AS568A, Size 7, Silicone, Shore A 70
AS568A, Size 10, Silicone, Shore A 70
5-micron filter upstream of sensor
Honeywell ZephyrTM Digital Airflow Sensors
HAF Series–High Accuracy
±50 SCCM to ±750 SCCM
Issue E
50045178
Figure 1. Wave Solder Profile
Temperature (°C)
300
Max. temp. = 243 °C
Max. temp. = 205 °C
250
200
Housing temp. (top of device)
Pin temp. (bottom of device)
150
100
50
0
0
20
40
60
80
100
Time (s)
Dlgital Interface
For additional details on the use of Zephyr with digital output see the Technical Note “I2C Communications with Honeywell Digital Airflow Sensors”.
The sensor uses the I2C standard for digital communication with a slave address specified in the Nomenclature and Order Guide in Figure 2.
Following sensor power-up, each of the first two read sequences shown in Figure 9 will respond with 2 bytes of the unique 4-byte Serial Number.
The first read after power-up will respond with the two most significant bytes of the Serial Number, while the second read will respond with the two
least significant bytes of the Serial Number. For reliable performance, allow sensor to be powered for the sensor start-up time before performing
the first read, then allow a 10 ms command response time before performing the second read.
Figure 2. Sensor I2C Read and Write Sequences
I2C Read: Slave responds to Master with data
Data Byte 0 (Most Significant)
SDA
SCL
Data Byte 1 (Least Significant)
S A6 A5 A4 A3 A2 A1 A0 1 SA D7 D6 D5 D4 D3 D2 D1 D0 MA D7 D6 D5 D4 D3 D2 D1 D0 MN S
I2C Read: Master sends data to Slave
Command Byte
SDA
SCL
S A6 A5 A4 A3 A2 A1 A0 1 SA D7 D6 D5 D4 D3 D2 D1 D0 MA S
Bit
Name
Description
S
Start condition
Master pulls SDA from high to low while SCL remains high
S
Stop condition
Master allows SDA to float from low to high while SCL remains high
Address bit
I2C Slave Address is the 7 Most Significant Bits for the first transmitted byte
Read/write bit
Read = 1, Write = 0
A6
1
D7
Data bit
SA
Slave ACK
Slave pulls SDA low
MA
Master ACK
Master pulls SDA low
MN
Master NACK
Master allows SDA to float high
After the power-up read sequence described above, the sensor will respond to each I2C read request with a 16-bit (2 byte) digital flow reading.
Read requests taken faster than the Response Time (1 ms) are not guaranteed to return fresh data. The first two bits of each flow reading will be
‘00’.
The maximum sink current on SCL or SDA is 2 mA. Therefore, if the pull-up resistors are biased by VDD, and if VDD reaches the maximum supply
voltage of 6 V, then the pull-up resistors for SCL and SDA must be greater than 3.0 kΩ to limit the sink current to 2 mA. The typical value for SCL
and SDA pull-up resistors is 4.7 kΩ (this value depends on the bus capacitance and the bus speed).
2
Honeywell Sensing and Control
Honeywell ZephyrTM Digital Airflow Sensors
HAF Series–High Accuracy
±50 SCCM to ±750 SCCM
Issue E
50045178
Figure 3. Mounting Dimensions (For reference only: mm [in].)
LF: Long port, fastener mount
MODEL NUMBER
LOT CODE
Honeywell Zephyr™
HAFBLFXXXXXXXXX
0x123456789
Mounting Footprint
7(50,1$/6,'(
3,0
[0.12]
2,00 TYP.
[0.079]
1,00
[0.04]
3,50
[0.14]
7,20
[0.28]
36,00
[1.42]
18,00
[0.71]
10,3
[0.40]
7,20
[0.28]
4X DIA. 0,812
[0.032]
10,00
[0.39]
2X DIA. 5,35
[0.21]
;32576
6,50
[0.26]
6(1625)22735,17
9,(:(')5207(50,1$/6,'(
2X DIA. 3,40
[0.134]
19,90
[0.78]
7,20
[0.28]
2X DIA. 3,40
[0.13]
6,35
[0.25]
12,70
[0.50]
28,80
[1.13]
36,00
[1.42]
AIRFLOW DIRECTION, PORT SIDE
SF: Short port, fastener mount
MODEL NUMBER
LOT CODE
Honeywell Zephyr™
HAFBSFXXXXXXXXX
0x123456789
7(50,1$/6,'(
3,0
[0.12]
2,00 TYP.
[0.079]
1 2 3 4
1,00
[0.04]
Mounting Footprint
3,50
[0.14]
7,20
[0.28]
36,00
[1.42]
18,00
[0.71]
10,3
[0.40]
2,50
[0.10]
6,50
[0.26]
19,90
[0.78]
7,20
[0.28]
2X DIA. 4,00
[0.16]
7,20
[0.28]
4X DIA. 0,812
[0.032]
;32576
6(1625)22735,17
9,(:(')5207(50,1$/6,'(
2X DIA. 3,40
[0.134]
2X DIA. 3,40
[0.13]
6,35
[0.25]
36,00
[1.42]
12,70
[0.50]
28,80
[1.13]
AIRFLOW DIRECTION, PORT SIDE
Honeywell Sensing and Control
3
Honeywell ZephyrTM Digital Airflow Sensors
HAF Series–High Accuracy
±50 SCCM to ±750 SCCM
Issue E
50045178
Figure 3. Mounting Dimensions (continued)
SS: Short port, snap mount
22,00
[0.87]
MODEL NUMBER
LOT CODE
DIA. 2,30
[0.09]
Honeywell Zephyr™
HAFBSSXXXXXXXXX
0x123456789
7(50,1$/6,'(
3,3
[0.13]
6,50
[0.26]
26,00
[1.02]
2,00 TYP.
[0.079]
1,00
[0.04]
10,40
[0.41]
7,20
[0.28]
Mounting Footprint
4,60
[0.18]
4,80
[0.19]
3,00
[0.12]
1,80
[0.071]
10,3
[0.40]
12,8
[0.50]
3,80
[0.150]
4,00
[0.157]
2X 7,20
[0.28]
2X 2,50
[0.098]
;32576
19,90
[0.78]
12,70
[0.50]
22,0
[0.866]
0,65
[0.026]
2,50
[0.10]
6,35
[0.25]
2X DIA. 2,2 [0.086] THRU
HOLES FOR MOUNTING
4X DIA. 0,812
[0.032]
26,00
[1.024]
6(1625)22735,17
9,(:(')5207(50,1$/6,'(
28,80
[1.13]
AIRFLOW DIRECTION, PORT SIDE
10 5. Pinout
Table
Pin 1
Pin 2
Pin 3
Pin 4
SCL
Vsupply
ground
SDA
Figure 4. Nomenclature and Order Guide
For example, a HAFBLF0200C4AX5 part number defines a Honeywell ZephyrTM Digital Airflow Sensor, bidirectional forward flow optimized, long port, fastener mount, 200 SCCM,
I2C output with address 0x49, 10% to 90% transfer function, 5.0 Vdc supply voltage.
HAF
Product Series
HAF Series
High Accuracy
Airflow Sensor
B
L
F
0200
C
4
A
X
5
Flow
Direction
Port Style
Housing Style
Flow Range2
Unit
Output Format
Transfer
Function
Reserved for
Future Use
Supply
Voltage
B Bidirectional
L Long port1
X XXXXX
3 3.3 Vdc
forward flow
optimized
S Bidirectional
S Short port
symmetric
F Fastener 0050 50 long port
mount
style only
S
Snap
mount1
0100
0200
0400
0750
100 long port
style only
200 long or
short port
400 long port
style only
750 long port
style only
C SCCM
I2C address:
4 Digital
0x49
I C address:
5 Digital
0x59
2
6
7
A 10% to 90% of
Full Scale Output
(FSO)
Digital I2C address:
0x69
Digital I2C address:
0x79
The Long Port Port Style with the Snap Mount Housing Style is not a valid configuration.
The 200 SCCM Flow Range is available in the Long and Short Port Styles.
1
2
Apart from the general configuration required, other customer-specific requirements are also possible. Please contact Honeywell.
4
Honeywell Sensing and Control
5 5.0 Vdc
Honeywell ZephyrTM Digital Airflow Sensors
HAF Series–High Accuracy
±50 SCCM to ±750 SCCM
Issue E
50045178
WARNING
PERSONAL INJURY
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.
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.
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.
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.
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: sensing.honeywell.com
Phone and Fax:
USA/Canada
+1-800-537-6945
International
+1-815-235-6847; +1-815-235-6545 Fax
Sensing and Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
honeywell.com
50045178-E-EN IL50
June 2015
© 2015 Honeywell International Inc. All rights reserved.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising