The AWM2000 Series microbridge mass airflow sensor is a passive device comprised of two Wheatstone bridges. The heater control circuit is required for operation per specifications. The sensing bridge supply circuit-in is also required for operation per specifications. These two circuits are not on board the package and must be supplied in the application. The differential amplifier is a useful interface for the sensing bridge. It can be used to introduce the gain and to introduce voltage offsets to the sensor output.

The AWM3000 Series is amplified; therefore, it can be used to increase the gain and to introduce voltage offsets to the sensor output. The AWM3000 Series is ideal for ultra-low flow applications. Also, the heater control circuit and the sensing bridge supply circuit are on board the AWM3000 package.

Features:

Output Voltage Varies in Proportion to the Mass Air or Other Gas Flow Through the Package Ports

Low Differential Pressure Sensing

AWM2000 Products Have Bidirectional Sensing Capabilities

Actual Mass Air Flow Sensing (AWM2000)

AWM3000 Products Are Laser Trimmed for Improved Sensor Interchangeability

Flow Sensing Up to 1.0 SLPM (AWM3000)

Low Differential Pressure Sensing (AWM3000)

Specifications:

Operating Temperature: -13° to +185°F