Mechanism and Modeling of Contaminant Accumulation on Hot-Film Air Flow Sensor

Figure 8

Circuit and physical diagram of microsilicon powder test. 1: air source; 2: regulator; 3: ball valve; 4, 5, 10, 11, and 12: Throttle valves; 6: microsilica powder; 7: powder generator; 8: motor; 9: mixing chamber; 13, 14, and 15: No.1, No.2, and No.3 sensors; 16: powder recycling; 17: gas tank; 18: aerosol particle monitor.

(a) Circuit diagram

(b) Physical diagram