Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1975-11-21
1976-08-31
Woodiel, Donald O.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73 675R, G01L 900
Patent
active
039772527
ABSTRACT:
An apparatus and method for controlling liquid pressure in pipelines wherein the apparatus comprises an ultrasonic measuring converter including an ultrasonic emitter and an ultrasonic receiver mounted on the outer surface of the pipeline; a measuring unit incorporated in the apparatus having a driving pulse generator connected to the emitter and connected via a time delay unit to a reference pulse shaper; the output of the reference pulse shaper is connected to one input of an information pulse shaper which has its other input connected, via a signal pulse shaper and an amplifier to the ultrasonic receiver; the output of the information pulse shaper is connected to an input of an information pulse control unit and to an input of a control pulse shaper which has an output connected to the other input of the information pulse control unit; an output of the information pulse control unit is connected to an information pulse converter which is connected to a recording instrument. The method and apparatus for controlling liquid pressure in pipelines enable the measurement of liquid pressure in pipelines over wide ranges of pressure and temperature with a high accuracy.
REFERENCES:
patent: 2700894 (1955-02-01), Valkenburg
patent: 2869357 (1959-01-01), Kritz
patent: 2978899 (1961-04-01), Kritz
Brazhnikov Nikolai Ivanovich
Krylova Eleonora Dmitrievna
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