ISSUE 2 Installation Instructions for the AWM3000 Series Microbridge Mass Airflow Sensors 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. GENERAL INFORMATION AWM3000 Series Microbridge Mass Airflow Sensors operate on the theory that airflow directed across the surface of a sensing element causes heat transfer. Output voltage varies in proportion to the mass of air or other gas flowing through a given sensor's inlet and outlet ports. Current sink/source. Maximum current ratings are 10 mA sinking and 20 mA sourcing, governed by an LM224 operational amplifier in the final stage of the instrumentation amplifier. MEDIA CONTAMINATION Media flowing through the sensor should be free of condensing moisture and particulate contaminants. An inexpensive 5 micron filter upstream of the sensing element substantially reduces the risk of damage due to contaminants. PK 88671 SOLDERING INSTRUCTIONS Please note: sensor should be securely attached to printed circuit board before soldering. Hand soldering: Use temperature controlled soldering iron with 3,2 mm (1/8 in.) diameter tip. Set temperature at 400 °C [750 °F]. Hold tip on terminal for 5 seconds maximum. Use Type R flux rosin core solder and hand clean after soldering. Wave soldering: Set solder temperature at 250 °C [480 °F) maximum. Run belt at minimum of 1.54 m [5 ft] per minute. Cover tube ends when cleaning. OUTPUT CURVES AWM3100V Output Voltage vs Mass Flow AWM3200V Output Voltage vs Pressure CLEANING Cover the ends of the ports when cleaning. Certain solvents may attack the epoxy used to seal the chip tubes to the ceramic substrate. CAUTION CLEANING DAMAGE • DO NOT USE ultrasonics when cleaning. Ultrasonic cleaning may damage the sensor’s microstructure. • Solvent cleaning may attack the epoxy that seals the chip tube. Do not use III Trichloroethane, methylene chloride, methyl pyrrolidone, or any oxidizing type acid such as formic acid. Failure to comply with these instructions may result in product damage. Automation and Control Products AWM3300V Output Voltage vs Mass Flow © Honeywell 2002, All Rights Reserved AWM3000 Series Microbridge Mass Airflow Sensors Issue 2 PK 88671 SPECIFICATIONS Type Recommended excitation Power consumption Output voltage @ laser trim point Null voltage Null voltage shift @ -25 °C to 85 °C [-13 °F to 185 °F] Output voltage shift -25 °C to 25 °C [-13 °F to 77 °F] 25 °C to 85 °C [77 °F to 185 °F] Repeatability and hysteresis, max. Maximum Response Time Operating Temperature range: Storage Temperature range: Termination (2,54 mm [0.100 in] centers) Weight Shock rating (5 drops, ea. of 6 axes) Maximum Overpressure 1. 2. 3. 4. 5. AWM3100V 10 ± 0.01 Vdc 50 mW 5.00 Vdc @ 200 sccm 1.00 ± .05 Vdc AWM3150V 10 ± 0.01 Vdc 50 mW 1.5 Vdc @ 5 sccm 1.00 ± .10 Vdc AWM3200V 10 ± 0.01 Vdc 50 mW 5.00 Vdc @ 2” H2O 1.00 ± .08 Vdc AWM3300V 10 ± 0.01 Vdc (2) 50 mW 5.00 Vdc @ 1000 sccm 1.00 ± .10 Vdc ± 25 mV ± 75 mV ± 25 mV ± 25 mV -5% Reading +6% Reading ± 0.50% reading 3.0 msec -25 °C to 85 °C [-13 °F to 77 °F] -40 °C to 90 °C [-40 °F to 194 °F] 0,635 mm [0.025 in] square 10,8 g [0.381 oz] 100 g peak -5% Reading +6% Reading ± 1.0% reading 3.0 msec -25 °C to 85 °C [-13 °F to 77 °F] -40 °C to 90 °C [-40 °F to 194 °F] 0,635 mm [0.025 in] square 10,8 g [0.381 oz] 100 g peak +24% Reading -24% Reading ± 0.50% reading 3.0 msec -25 °C to 85 °C [-13 °F to 77 °F] -40 °C to 90 °C [-40 °F to 194 °F] 0,635 mm [0.025 in] square 10,8 g [0.381 oz] 100 g peak -5% Reading (4) +6% Reading ± 1.0% reading (3) 3.0 msec (1) -25 °C to 85 °C [-13 °F to 77 °F] -40 °C to 90 °C [-40 °F to 194 °F] 0,635 mm [0.025 in] square 10,8 g [0.381 oz] 100 g peak 25 psi 25 psi 25 psi 25 psi (5) Response time typically 1 ms from 10% to 90%. Initial warm-up time for signal conditioned circuitry is 1 minute maximum Output voltage is ratiometric to supply voltage. Repeatability and hysteresis tolerances reflect inherent inaccuracies of the measurement equipment. Temperature shifts in differential pressure devices are mostly due to the density change of the gas over temperature. Maximum flow rate to prevent damage to sensing element (includes flow pulse) is 5 LPM. OUTPUT FLOW VS. INTERCHANGEABILITY Flow sccm 200 175 150 125 100 75 50 25 0 AWM3100V Nom. Tol. (2 Vdc ± Vdc 5.00 4.80 4.50 4.17 3.75 3.27 2.67 1.90 1.00 0.15 0.16 0.17 0.18 0.19 0.19 0.17 0.13 0.05 AWM3150V Flow Nom. Tol. (2) sccm Vdc ± Vdc AWM3200V Pressure Nom. Tol. (2) in H2O Vdc ± Vdc 30 20 10 5 4 3 2 1 0 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00 3.75 2.90 1.95 1.50 1.40 1.30 1.20 1.10 1.00 0.70 0.45 0.20 0.07 0.08 0.08 0.07 0.06 0.05 5.00 4.59 4.16 3.70 3.25 2.65 2.15 1.55 1.00 0.15 0.15 0.16 0.20 0.22 0.22 0.19 0.11 0.08 AWM3300V Flow Nom. Tol. sccm Vdc (2) ± Vdc 1000 5.00 0.15 900 4.90 0.16 800 4.80 0.17 700 4.66 0.18 600 4.42 0.19 500 4.18 0.20 400 3.82 0.21 300 3.41 0.19 200 2.96 0.17 100 2.30 0.14 0 1.00 0.10 The unique design of the microbridge mass airflow sensor accommodates your special requirements. Custom laser trimming and flow channel dimensioning can conform performance characteristics to specific applications. Please contact your Honeywell sales office for assistance. 2 Honeywell • Automation and Control Products AWM3000 Series Microbridge Mass Airflow Sensors Issue 2 PK 88671 MOUNTING DIMENSIONS (for reference only mm/in) DESCRIPTION Catalog Listing AWM3100V AWM3150V AWM3200V AWM3300V OUTPUT CONNECTIONS Flow Range +200 sccm / + 0.2 in H2O full scale +30 sccm / + 1 in H2O full scale + 60 sccm (± 20 sccm) + 2 in H2O full scale +1000 sccm / 1.3 in (± 0.1 in) H2O full scale Pin 1 Pin 2 Pin 3 Output voltage + Supply voltage Ground Note: Positive flow direction is defined as proceeding into Port 1 (P1) and out of Port 2 (P2), and results in a positive output. Honeywell • Automation and Control Products 3 AWM3000 Series Microbridge Mass Airflow Sensors WARRANTY/REMEDY Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace 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. 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. 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. For application assistance, current specifications, or name of the nearest Authorized Distributor, contact a nearby sales office. Or call: 1-800-537-6945 USA 1-800-737-3360 Canada 1-815-235-6847 International FAX 1-815-235-6545 USA INTERNET www.honeywell.com/sensing [email protected] Automation and Control Products Honeywell 11 West Spring Street Freeport, Illinois 61032 PK 88671-2-EN IL50 GLO 0902 Printed in USA Issue 2 PK 88671 www.honeywell.com/sensing