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Method and device for correcting ultrasonic instrument

An ultrasonic and instrument technology, which is applied in the correction method and device field of ultrasonic instruments, can solve the problems of flow calibration accuracy reduction and achieve the effect of improving flow calibration efficiency

Active Publication Date: 2021-11-16
ZHEJIANG CHINT INSTR & METER +1
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  • Claims
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Problems solved by technology

[0003] When using the LED pulse to collect the accumulated amount for flow calibration, each LED pulse represents a certain amount of gas accumulation. When the accumulated amount of gas accumulated at the meter end is less than the accumulated amount represented by the LED pulse, the pulse will not be output, thus causing This part of the gas is ignored, resulting in a decrease in the accuracy of the flow calibration

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  • Method and device for correcting ultrasonic instrument
  • Method and device for correcting ultrasonic instrument
  • Method and device for correcting ultrasonic instrument

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Embodiment Construction

[0052] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, rather than all the embodiments. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0053] It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one e...

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Abstract

The invention discloses a method and device for correcting an ultrasonic instrument. The method comprises the following steps: acquiring a first cumulant of a to-be-corrected target instrument at a target flow value; under the condition that the monitoring index corresponding to the target flow value reaches a preset threshold value, obtaining a second cumulant of the target instrument; performing calculation based on the first cumulant and the second cumulant to obtain correction data; and writing the correction data into the target instrument, so that the target instrument is corrected according to the correction data. According to the embodiment of the invention, flow calibration is carried out by a method of reading the first cumulant and the second cumulant through the monitoring index, so that the problem that the gas cumulant of LED pulse meter calibration is ignored is solved, and the flow calibration efficiency can be improved.

Description

technical field [0001] The present application relates to the field of equipment testing, in particular to a correction method and device for an ultrasonic instrument. Background technique [0002] For ultrasonic speed gas meters, sonic nozzle meter calibration equipment is commonly used at present. The sonic nozzle meter calibration device outputs gas stably according to the set flow rate and the set cumulative amount, and then compares it with the cumulative amount measured by the meter end. By comparison, the measurement error can be obtained to correct the flow rate. When obtaining the cumulative amount at the meter end, it is usually obtained through the LED pulse at the meter end, and each LED pulse represents a certain cumulative amount. After the device outputs the flow rate, it collects the LED pulse at the meter end. After the flow stops outputting, it calculates the error according to the accumulated amount output by the device and the accumulated amount collecte...

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Application Information

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IPC IPC(8): G01F25/00
Inventor 宾曼琳陈州项勇蒋韦张伟郑哲璐
Owner ZHEJIANG CHINT INSTR & METER
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