This article describes the design of a high precision ultrasonic flowmeter.
文章报导了一种新型高精度超声波流量计的系统设计。
Principles, types and latest development jacketed ultrasonic flowmeter are also introduced.
介绍了管外夹装式超声波流量计的基本原理、类型及其最新进展；
Introduced are the structure, measuring principle and speciality of the memory ultrasonic flowmeter.
介绍了存储式超声流量计的仪器结构、测量原理和特点。
In the thesis, an ASIC for ultrasonic flowmeter is designed based on the principle of time difference.
论文根据时差法超声波流量计的测量原理，设计了一款超声波流量计专用芯片。
The method in this paper is used by the ultrasonic flowmeter and a very good effect has been obtained.
该方法已应用在超声波流量计中，收到了很好的效果。
The wide-wave ultrasonic flowmeter has the unique second channel to automatically adjust the zero point drift.
并通过宽波束流量计特有的第二通道对零点漂移进行自动调整。
Introduces the theory basis, structure, circuit principle, working mode and characteristics of ultrasonic flowmeter we designed.
介绍了生产测井超声流量计设计的理论基础以及仪器结构、电路原理、工作方式和特点。
There is provided a Doppler type ultrasonic flowmeter (1) for measuring a flow rate of a fluid (10) by using an ultrasonic Doppler shift.
提供了一种通过利用超声波多普勒频移来测量流体(10)的流速的多普勒型超声波流量计(1)。
This article points out that using the portable ultrasonic flowmeter can realize the large-caliber flowmeters on-line testing and calibration.
文章指出采用便携式超声波流量计可以实现在线大口径流量计的检测及校准，并介绍了检测步骤和检测时需要满足的条件。
Based on the characteristic of the Wide-beam ultrasonic flowmeter, automatic gain control amplifier and the tracking band-pass filter are devised.
并根据宽波束超声波流量计的特点重点进行了自动增益控制放大器和跟踪带通滤波器的设计。
The Portable Ultrasonic Flowmeter UFP-20, based on the same, ergonomically advanced design so popular in the UFP-10, features significant size reduction.
便携式超声波流量计的超微粒子- 20，人类工程学的先进设计，以便在超微粒流行基于同样- 10，具有重大的规模缩小。
We research corn harvest system of ultrasonic flowmeter by Doppler in this paper, start the prophase research work on corn harvest system and ultrasonic flowmeter.
以多普勒法的谷物收获超声波流量计为研究对象，进行谷物收获系统和超声波流量计的前期研究。
Logging data analysis of Well X7-11-632 proves that the design of this ultrasonic flowmeter is proper and can meet the need of injection profile logging of oilfields.
对杏711 63 2井的测井资料进行了分析，证明了该超声流量计设计合理，可以满足油田注入剖面测井的需要。
The precision of the ultrasonic flowmeter with small tube diameter and frequency difference method is affected by several factors, so to gain more accuracy is difficult.
小管径频差法超声波流量计的测量精度受各种因素的影响，因而获得较高精度比较困难。
Therefore, to design an ASIC for ultrasonic flowmeter not only could realize the integration of flowmeter, but also could reduce the cost, which is of great significance.
因此设计一款专用芯片不仅可以实现流量计的集成化，还可以降低流量计的成本，具有重要的意义。
The characteristics of natural gas ultrasonic flowmeter and the problems to be in need of solution are described, and the result of practical flow measurement is analyzed.
阐述了天然气超声波流量计的特点和待解决的问题，分析了实流测试的结果。
This paper presents the principle of a ultrasonic flowmeter and its design on software and hardware. Some methods to improve the precision and reliability are also given in the article.
本文介绍了电脑超声流量计的工作原理及软硬件系统设计思想，给出了提高测量精度、增强可靠性的方法。
This paper presents the electrocircuit design of a multi-path ultrasonic gas flowmeter.
介绍了一种多声道超声气体流量计的电路设计。
Work theory, measure method of ultrasonic waves flowmeter and its application in salt production is introduced, some questions in selection and application of the flowmeter are pointed out.
介绍了超声波流量计的工作原理，测量方法及其在制盐生产中的应用，并提出了选用时应注意的一些问题。
The measuring principle of ultrasonic transducer in open ditch flowmeter is described briefly.
简单叙述了超声传感器用于明渠流量计的测量原理。
The most successful part of the system is the selection of SL ultrasonic Doppler side-looking flowmeter and developed software.
其中选用的SL超声波多普勒侧视流量仪和开发的应用软件是本系统最为成功之处。
The repetition of the ultrasonic sound and the experiment of zero velocity in gas flowmeter are tested using this speed measurement system.
利用该测速系统，进行了超声波的重复性测试，以及在以空气为介质的零流实验。
The repetition of the ultrasonic sound and the experiment of zero velocity in gas flowmeter are tested using this speed measurement system.
利用该测速系统，进行了超声波的重复性测试，以及在以空气为介质的零流实验。
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