Abstract: An automated fluid flow measurement system employs two temperature sensitive silicon resistors having tracking temperature coefficients. The resistors have equal impurity concentration but different values of resistance. The first temperature sensitive resistor is employed to measure the temperature of a flowing fluid. The second temperature sensitive resistor is electrically heated to a temperature at a predetermined amount greater than the measured temperature of the fluid. Because the rate of heat transfer from the heated temperature sensitive resistor to the fluid depends upon the rate at which the fluid passes this temperature sensitive resistor, the power required in order to maintain the predetermined temperature difference in the second temperature sensitive resistor is a measure of the flow rate of the fluid.