AWM3000 Series Microbridge Mass Airflow Sensors

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