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

Table 9

Theoretical and test values of cumulative thickness on No.6 and No.7 sensors.

Test time	Cumulative thickness on No.6 sensor(μm)		Cumulative thickness on No.7 sensor(μm)
(h)	Theoretical value	Test value	Theoretical value	Test value
300	6.905	6.344	10.263	10.012
600	10.272	10.706	15.046	14.801
900	12.867	13.156	18.724	18.331
1200	15.058	15.028	21.828	20.921