| 摘要 |
A gas analyser (1) for determining the respective proportions of the components of a mixture of two gases, includes a chamber (2) having an inlet (6) and an outlet (7) allowing the gas mixture to flow through the chamber. The analyser also includes tansmitter means (5) and receiver means (5) for respectively tansmitting and receiving ultrasonic pulses (12) and means to provide a measure of the proportions of the gaseous components from the transit time of a pulse transmitted by the transmitter means and received by the receiver means. |
