Anemometer compensator linearizer

In combination:

• a hot probe and an anemometer control unit for providing a bridge excitation output signal;
• a temperature sensing probe;
• a fluid static pressure sensing probe;
• squaring circuit means responsive to said bridge excitation output signal for providing an output signal representative of power;
• first amplifier circuit means coupled in circuit with said temperature sensing probe for providing an output signal which varies exponentially with fluid temperature;
• log converter circuit means responsive to said output signal which varies exponentially with fluid temperature for providing an output signal which is linear with fluid temperature;
• summing amplifier circuit menas responsive to said output signal which is linear with fluid temperature for providing a signal voltage representative of the difference between said hot probe operating temperature and fluid temperature;
• divider circuit means responsive to said output signal which is representative of power and said signal voltage representative of the difference between said hot probe operating temperature and fluid temperature for providing a signal representative of a non-linear function of fluid mass flow;
• and
• linearizer circuit means responsive to said signal representative of a non-linear function of fluid mass flow and the output of said fluid static pressure sensing probe for providing a signal representative of the steady state velocity component of the fluid and a further signal representative of the turbulence steady state value of the fluid.