Honeywell AWM90000 Series
The AWM90000 Series air flow sensors are available in two versions: mass flow and differential pressure. They offer a fast response time of just 1 ms and operate with a supply voltage ranging from 8.0 Vdc to 15.0 Vdc.
The AWM92100V provides a flow range of ±200 SCCM with a typical pressure drop of only 0.49 mbar (49 Pa | 0.007 psi). The AWM92200V is a differential pressure variant with a measurement range of ±2 inH₂O.
With a power consumption of just 50 mW, the series is ideally suited for portable devices and battery-powered applications. The compact plastic housing withstands a maximum overpressure of 1720 mbar (72 kPa | 25 psi) without compromising performance, offering a combination of proven reliability and reproducible flow measurement.
Possible applications
- Damper control for heating, ventilation, and air conditioning systems
- Gas analyzers
- Process control
- Medical devices and ventilators
- Oxygen concentrators
- Leak detectors
- Gas chromatography
Functionality
In simple terms, an air flow sensor is a device with two pressure ports through which gas flows from one port to the other (see Figure 1). Inside the sensor is a sensitive measuring element with a heated surface.
As air or gas flows through the sensing element, heat is transferred in the upstream direction, as shown in Figure 2. This creates a temperature difference that is proportional to the mass flow of the medium. The temperature difference is measured by an electronic circuit and converted into a corresponding output signal.
- Precise and fast response to the flow of air or other gases
- Bi-directional measurement function
- Compact design
- Fast response time (typically 1 ms)
- Low hysteresis (less than 0.35% of the measured value)
| AWM92100V | AWM92200V | ||
|---|---|---|---|
| Mass flow | Differential pressure | ||
| ±200 SCCM | ±5 mbar | ± 500 Pa | ±2.0 inH2O |
| AWM92200V |
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