Patent ID: 7860667

Claim:
A gas measurement system comprising: a probe ( 10 ); the probe ( 10 ) comprises a sensor circuit comprising a thermal dispersion sensor ( 23 ) and a reference thermistor ( 24 ); the thermal dispersion sensor and the reference thermistor are disposed within a shroud ( 20 ); the shroud partially enclosing the thermal dispersion sensor and the reference thermistor such that a gas flow through the shroud is substantially representative of the gas flow through a gas duct; the probe further comprises an elongate member ( 27 ) having an aerodynamic form, the shroud is mounted to the elongate member, the elongate member mountable within the gas duct; and a microprocessor for receiving a signal from the thermal dispersion sensor and the reference thermistor, the microprocessor calculating and displaying a gas velocity and gas temperature.