Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Lubricant testing
Patent
1977-06-21
1978-06-20
Ruehl, Charles A.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Lubricant testing
73597, G01N 2902
Patent
active
040954579
ABSTRACT:
Apparatus for detecting changes in parameters of a liquid flowing in a pipe based on the sing-around method, comprises: a set of a transmitting probe and a receiving probe arranged opposite to each other on the outer surface of a pipe for transmitting and receiving an ultrasonic pulse; a masking circuit for transmitting a masking signal in response to a signal from said receiving probe; a one-shot pulse generator circuit for transmitting a pulse in response to said masking signal from said masking circuit; a masking time setup circuit for setting up a masking time of said masking signal of said masking circuit; a receiving monitor-time setup circuit and a pseudo-pulse generator circuit for transmitting a pseudo-pulse; a voltage/power converter circuit for converting said pulse from said one-shot pulse generator circuit into a power signal; and an output section for taking out said pulse from said one-shot pulse generator circuit as an output.
REFERENCES:
patent: 3028749 (1962-04-01), Welkowitz
patent: 3100885 (1963-08-01), Welkowitz et al.
patent: 3715709 (1973-02-01), Zacharias, Jr. et al.
Koda Kazuo
Tsuchiya Masato
Nippon Kokan Kabushiki Kaisha
Ruehl Charles A.
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