Air Flow Measurements for Medical Applications
Air Flow Sensors
AdVanced Sensors has designed these Mass Air Flow Sensors from the ground up, incorporating the latest MEMS and microelectronics innovations. The sensor die uses a pair of thermopiles to detect changes in temperature gradient caused by mass flow, delivering ultra-low noise to signal, and unsurpassed repeatability. The “solid state” thermal isolation on the sensor die eliminates the need for a surface cavity or a fragile membrane, making the sensor resistant to clogging (from water vapor or dust particles) and pressure shock. The sensor’s signal conditioning circuitry leverages an off-the-shelf microcontroller, providing proven reliability and low cost.
Capabilities of AV Sensors Thermopile Flow Sensors
Fast Accurate Thermopile Technology
2% Overall Interchangeability
Mass Air Flow Measurements for Medical Applications
Sensitivity to Low flows
Resistance to Dust Particles and Water Vapor
Flow Ranges 12 to 300 SLPM
Fast response time (1ms typ.)
Voltage Output, 1-5 Vdc
Replaces AWM3000 series
Thermopile Sensor Technology
Regulated High Output Voltage
Advanced Sensors AWM 7 series of Mass Air Flow Sensors offer pin compatible upgrade solutions to the popular AWM7000 series. Using the robust Advanced Sensors Thermal Flow Sensor Die, and incorporating the latest microcontroller technology, AWM7 offers drastically improved interchangeability (< 2% full scale), temperature stability (< 3% full scale from 0°C to +50°C), and resistance to adverse environmental factors such as dust particles and water vapor that have plagued the AWM7000.