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: email@example.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.
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