Test method and measuring device for acoustic delay of gas ultrasonic flowmeter

A technology of ultrasonic flowmeter and measuring device, which is applied in the direction of measuring device, testing/calibrating device, liquid/fluid solid measurement, etc. It can solve the problems of installation error, long test time and environmental requirements, and affect the accuracy of sound delay measurement, etc., to achieve The effect of high accuracy, faster detection time, and easy operation
CN102589656AActive Publication Date: 2012-07-18上海中核维思仪器仪表股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海中核维思仪器仪表股份有限公司
Publication Date
2012-07-18

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Abstract

A test method and a measuring device for acoustic delay of a gas ultrasonic flowmeter relate to the technology for detecting ultrasonic wave propagation time of ultrasonic flowmeters, in particular to the technology for measuring time errors of electronic circuit signal propagation delay time, transducer signal delay time, signal sampling point delay time and signal cable delay time, and are suitable for sound velocity detection of various diameters of ultrasonic flowmeters. The test method for the acoustic delay is a measuring method for contrasting and proving acoustic delay data of a detected meter through a detected high-accuracy standard gas sound velocity measuring device, a computer and upper computer software according to standard sound velocity of a place where the detected gas ultrasonic flowmeter is located.
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Description

technical field

[0001] A gas ultrasonic flowmeter sound delay testing method and measuring device, relating to the detection technology of the ultrasonic wave propagation time of ultrasonic flowmeter instruments, especially related to the detection of electronic circuit signal transmission delay time, transducer signal delay time, and signal sampling point lag Time and signal cable delay time measurement time error technology is suitable for sound velocity detection of ultrasonic flowmeters with various calibers. Background technique

[0002] The sound delay measurement of the gas ultrasonic flowmeter is to detect the delay time (microsecond level) of the sound velocity sound signal sampling inherently involved in the operation of the flowmeter itself. The accuracy of the detection will directly affect the final quality of the instrument manufacturing.

[0003] At present, the traditional "mapping method" is used at home and abroad to measure the sound delay of the gas ultra...

Claims

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