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US 5,060,514 AGranted
Ultrasonic gas measuring device
AssigneePuritan-Bennett Corporate
InventorAlonzo C. Aylsworth
Life of this patent
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AssigneePuritan-Bennett Corporate
InventorAlonzo C. Aylsworth
Estimating the term…
An ultrasonic gas measuring device including a housing, end walls for the housing, the end walls having a gas inlet and a gas outlet provided therethrough, ultrasonic detecting means provided within the housing means, the ultrasonic means having a transmitter, operatively mounted on one end wall, and a receiver, operatively mounted on the other end wall, arranged at spaced locations within the housing, the housing incorporating gas processing means for dividing the gas flow at least at some instance during its flow through the housing, electronic circuitry functioning to detect and generate a signal in cooperation with the ultrasonic detecting means representative of the concentration of gas passing through the housing, the electronic means also generating a reference signal corresponding to the electronic signal delivered to the ultrasonic means, a phase shift provided within the electronic circuitiy and effecting a shift of one of said signals to furnish an aligned phased relationship between the two signals whereby the concentration of the gas passing through the housing as detected by the ultrasonic means can be electronically computed and precisely determined by the said electronic means.
An ultrasonic gas measuring device for continuously monitoring a gas including a housing means, said housing means comprising a chamber having a first end wall and a second and opposite end wall, said housing means having a gas inlet through the first end wall, and a gas outlet provided through the second end wall, said gas inlet and gas outlet provided communicating through the chamber for passage of a gas to be measured, ultrasonic means provided within the housing means, said ultrasonic means having a transmitter connected to the first end wall, and a receiver at a spaced location provided at the second end wall of the housing means for transmission of its ultrasonic waves along the length of the chamber in alignment with the transfer of the passing gas, said housing means incorporating gas processing means for dividing the gas flow at least at some instance during the gas flow through the housing means, whereby gas flow turbulence is substantially reduced as the concentration of the gas is being measured by the ultrasonic waves of the ultrasonic means through resistance to the movement of the ultrasonic waves through the gas being measured as said gas and waves pass through the chamber of the housing means and along the length of the measuring device.
An ultrasonic gas measuring device including a housing means, said housing means having a gas inlet and a gas outlet provided therethrough for passage of a gas to be measured, ultrasonic means provided within the housing means, said ultrasonic means having a transmitter and a receiver at spaced locations within the housing means, for transmission of its ultrasonic waves along the length of the axis of movement of the passing gas, a pair of opposite end walls provided within the housing means, one of said transmitter and receiver of the ultrasonic means mounted upon one of each end wall, one of said end walls being adjustable within the housing means to provide for a presetting in the functioning of the measuring device in determining the concentration of any gas passing through the housing means during its operation, electronic means operatively associated with the housing means to measure the concentration of the gas flowing therethrough, said electronic means functioning to detect and generate in cooperation with the ultrasonic means a signal corresponding to a concentration of gas passing through the housing means, said electronic means also generating a reference signal corresponding to the electronic signal delivered to the ultrasonic means, a phase shift means provided within the electronic means and effecting a shift of one of said signals to furnish an aligned phased relationship between the two said signals wherein the concentration of the gas within a concentration range of that gas can be consistently computed and determined, said housing means incorporating gas processing means for dividing the gas flow at least at some instance during the gas flow through the housing means, whereby gas flow turbulence is substantially reduced as the concentration of the gas is being measured by the ultrasonic waves of the ultrasonic means through resistance to the movement of the ultrasonic waves through the gas being measured as it passes through the housing means and along the same length of movement of the gas being measured.
Dependencies are inferred from the claim text.