Air flow measuring element and air flow measuring apparatus therewith

摘要

A measuring element for an air flow rate measuring apparatus has upstream and downstream heating resistors and first and second temperature compensating resistors paired with the upstream and downstream heating resistors, respectively. The resistors are mounted on an electrically insulated substrate positioned within an air flow. A substantial part of resistor film of the temperature compensating resistor paired with the upstream heating resistor is positioned upstream on the insulated substrate relative to the resistor film of the compensating resistor paired with the downstream heating resistor.