Datasheet
Airflow Sensors AWM3000 Series
Microbridge Mass Airflow/Amplified
Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
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FEATURES
1 Laser trimmed for improved sensor
interchangeability
1 Flow sensing up to 1.0 SLPM
1 Low differential pressure sensing
Like the AWM2000 Series, the dual
Wheatstone bridges control airflow mea-
surement. The AWM3000 Series is ampli-
fied; therefore, it can be used to increase
the gain and to introduce voltage offsets
to the sensor output. The schematic in
Figure 3 depicts the amplification circuitry
on board the sensor. Also, the heater con-
trol circuit (see Figure 1) and the sensing
bridge supply circuit (see Figure 2) are on
board the package.
Figure 1
Heater control circuit
Figure 2
Sensing bridge supply circuit
Figure 3
Differential instrumentation amplifier circuit
Airflow