This paper verified TRQ-2004-02 natural gas flow measurement standard orifice plate design and management software, located the faults in standard orifice plate metering system that customer queried ,using the software designed and calculated diameter of the new standard orifice plate, compared the difference of the old and new standard orifice plate metering system, amended the wrong metering data, eliminated the metering objection.

This paper briefly introduces several test indexes for ultrasonic flowmeter , and preliminarily interprets the relationship between the sound velocity deviation in GB/T 30500-2014 "ultrasonic gas flow meter performance online audit-method using speed of sound checking" and the verification. The flowmeters that have been in use for six consecutive years (statutory longest inspection period) qualified, unqualified flow pattern, unqualified signal quality of flowmeters and unqualified sound velocity deviation are selected to track the results of their subsequent real-flow verification (additional sound velocity verification if necessary), and analyze the various evaluation indexes and flowmeters that are being inspected in use. The relationship between measurement performance and the possible reasons for unqualified indicators are further analyzed, and suggestions for investigation are given as far as possible. It is expected that the analysis of test results in use can provide reference for the field use of ultrasonic flowmeters.

介绍了基于临界流文丘里音速喷嘴法的移动式气体流量标准装置的基本构成、工作原理、不确定度评定及相关的实验应用。该类型标准装置的建成填补了国内通常作为固定式转化成移动式标准装置的空白，本装置具有整体扩展不确定度高、流量稳定性好、标准器检定周期长、动力系统小型化、可移动等特点。

水表耐久性试验装置是用于进行水表耐久性试验的设备，耐久性试验旨在检验水表在使用一段时间后，能否保持其性能特征。浙江省计量科学研究院于2007年研制了水表耐久性试验装置，填补了国内空白，实现了水表检测技术与国际接轨。JJF 1435-2013《水表制造计量器具许可考核必备条件》指出，企业应具备相应的部件检测设备中就包括了耐久性试验装置，且所有检测设备均应有连续有效的检定/校准证书或检测报告。耐久性试验装置如何检测成为了一个急需解决的问题。

电流探头通过转移阻抗将骚扰电流转换成可方便测量的骚扰电压，准确校准转移阻抗为电磁兼容测量提供重要技术支持。本文对电流探头转移阻抗的校准进行了总结研究，应用该校准方法得到的校准结果与出厂指标基本一致，校准结果对电流探头的使用提供较为可靠的参考。

In this paper, the thermal diffusivity of graphite, stainless steel, copper and corundum was tested in the range of (400～800) ℃ by using the vertical thermal diffusivity measurement device based on the laser flash method. The thermal diffusivity stability and repeatability of the material samples were evaluated. The thermal diffusivity test results were studied and analyzed. Suggestions on the selection of thermal diffusivity standard samples were put forward.

JJF 1317-2011液相色谱-质谱联用仪校准规范仅给出了信噪比的不确定度评定示例，而现有文献关于液相色谱-质谱联用仪校准时质量准确性不确定度的评定相关研究较少。其中一个难点就是理论值引入的不确定度，文章介绍了一种理论值引入的不确定度评定方法，通过举例说明该方法的适用性。

电子计价秤在日常生活中被广泛使用,受利益驱动,常出现被改造软件、硬件的情况,从而实现作弊功能,损害消费者的合法权益。本文主要从软件、硬件两方面阐述所设计的电子计价秤作弊码检查装置,从而支撑行政查处和监管。

Tosolvetheconflictbetweencombatcapabilityandthelifespanoftheaeroengine,thedesignmethodoffighting/trainingconditionsisproposedinmodernaircraft.Thispaperanalyzesthereasonwhythefighting/trainingconditionsofanaircraftequippedwithacertaintypeofdomesticturbofanaeroenginefailstotransfernormallyduringgroundtestinspection,andputforwardcorrespondingsolutions,whichprovidesacertainbasisandconvenienceforthetroubleshootingofsuchcases.

ByestablishingabigdataplatformforenergyconsumptionmonitoringcoveringthewholeregionofXinjiang,wecandynamicallygraspkeyinformationsuchasindustrialstructure,energyconsumptionandemissioncharacteristics,andexploretheestablishmentofmulti-dimensionalbigdataanalysismodelstoprovidetechnicaldataforXinjiang'seconomicdevelopment,energysavingandefficiencyimprovement,carbonreductionandenvironmentalprotectionpolicies,andpromotethegreenandlow-carbontransformationofXinjiang'seconomicandsocialdevelopment.

Particle materials are widely used in different fields such as medicine，construction，chemical and environmental protection, and the parameters of particle size，shape and distribution are closely related to the physical and chemical properties of particle materials. Particle testing technology is an important means to represent the parameters of particle. In recent years, the particle testing technology of different fields and principles has made new progress and obtained closely attention from various industries. This paper summarizes the development status of particle testing technology and its the latest application process in different fields. On the basis of this, the different trend of the particle testing technology is prospected, in order to provide appropriate reference for the application of particle testing technology in different fields.

The large water flow standard facility is the core device for carrying out large pipe diameter flow meter test and ensuring the accuracy and reliability of traceability and transmission of large water flow value, and the measurement and control system is an important part of the flow standard facility. At present domestic specialized study of large water flow facility control system for less, the existing research results has far lags behind the water flow metrology technology present situation, and difficult to meet the society for large diameter flow meter automatic, intelligent and high accuracy calibration requirements. These problems in turn restrict the further popularization and application of large water flow standard facility. A control system suitable for the large water flow standard facility is designed and developed, and the performance level of the system is evaluated by flow stability and response time of flow regulation. The experimental results show that: When the pipeline flow rate is in the range of (480~7800) m3/h, the system stability Eq=0.193%<0.2%; and when the flow rate increases from 0 to 8500 m3/h, the system response time is about 110s, which indicates its performance level is relatively excellent.

文章通过对JJF1154-2014《四轮定位仪校准规范》的详细研究及现场试验，结合目前四轮定位仪校准装置在主销模拟、定位参数零位确定、现场安装等方面的不足，介绍一种四轮定位仪校准装置采用四轮分体、组合使用的结构，由步进电机作为角度驱动器，通过高精度双轴倾角仪及绝对角度编码器实现角度闭环系统控制。文章对该装置的结构设计及校准原理进行了深入阐述，以期为四轮定位仪校准技术发展起到些许参考。

文章研究和设计了一种用于校准塑料管材耐压试验机的标准装置，其间着重分析了塑料管材耐压试验机校准规范中设定点控制误差项目的校准难点，解决了试验机的压力控制系统在校准时与真实的工作状态不符的问题，以满足校准规范中对标准器的要求。

This paper introduces the gas flow standard device using critical flow Venturi nozzle method，The DN600mm gas vortex flowmeter used for steam flow measurement is verified according to jjg1029-2007 《verification regulation of vortex flowmeter》,According to jjf1059.1-2012 《evaluation and expression of measurement uncertainty》, The uncertainty of the measurement result of the K coefficient at the maximum flow point (Qmax point) of the flowmeter is analyzed and evaluated,It provides reference data for the application of large-diameter vortex flowmeter in steam flow measurement.

针对手持式数字多用表校准参数多、易出错、操作耗时的计量问题，研究了基于PYTHON视觉识别算法的手持式数字多用表自动校准技术，介绍了自动校准技术的实现路线，研制了适用于大部分手持式数字多用表的高兼容性简易夹具，并对手持式数字多用表自动校准应用中遇到的示值刷新、刮痕、光源设计等部分实际问题进行了探讨。实验结果表明，基于视觉识别的手持式数字多用表自动校准技术可以较好地代替人工校准操作，对节省人力付出有较明显的作用。

Scraper flowmeter is a kind of dynamic measuring instrument widely used in the process of crude oil measurement and transfer. Its measurement performance, measurement accuracy, and instrument stability will directly affect the economic interests of both parties in crude oil trading. This paper sorts out the previous verifications of scraper flowmeters at a certain oil transportation terminal, draws a historical curve of verification errors based on the data, and analyzes the causes of errors that affect scraper flowmeters in terms of verification, daily operation, and routine maintenance, and conducts in-depth research on them. , Propose corresponding reasonable countermeasures to improve the measurement accuracy of the scraper flowmeter for the reasons of the error.

针对激波管校准装置中反射阶跃压力幅值溯源精度低的问题，提出一种基于模型修正的激波管反射阶跃压力幅值高精度溯源方法。根据理想气体理论，建立激波管反射阶跃压力幅值溯源的理论模型；分析入射激波速度的衰减规律，构建基于多传感器的入射激波速度多点测量方案；根据多点测量结果拟合入射激波速度的分布模型，实现入射激波速度衰减补偿，进而实现激波管反射阶跃压力溯源模型修正，提高阶跃压力幅值溯源精度。采用不同压力下的激波管实验验证反射阶跃压力幅值溯源的准确性，结果表明，本文方法的反射阶跃压力幅值溯源结果与实测结果的平均相对误差小于1%，其值大约为基于未修正模型的溯源结果平均相对误差的1/4倍。

本文首先介绍了测速仪的应用场景及检测方法。为解决测量领域中高速测量存在的实际问题，设计研制一套面向多功能测速仪的实验室模拟测速校准装置，该装置主要由上位机触摸屏、PLC、驱动器、伺服电机，传送带、传动轮等构成，通过提供稳定且持续的线速度对不同速度的测速仪进行实验室条件下模拟校准。该方法可有效地解决由于现场环境的影响对测速仪检测造成的干扰，该方法在有效保证测速仪计量特性准确的同时，可提高检测效率，保证检测安全，最后通过实验数据验证了该方法的可行性及准确性。

With the vigorous development of Yunnan Pu-Er tea industry,the quality control of tea has been paid more and more attention, and the detection of heavy metals in tea is also a focus of attention. In this paper, five heavy metal component reference materials (Cr, Cu, Cd, As, Pb) in six Yunnan Pu'er teas from three places of origin were studied, combined with ten laboratories to carry out calibration， and their uncertainty was evaluated. The reference materials with good homogeneity and stability could be used for the inspection and detection of heavy metal components in the same matrix Pu-Er teas.

民用小口径机械水表每年在全国水表生产总量约占90%左右，水表生产单位要求申报计量器具制造许可证要做型式试验（型式评价），水表生产企业生产的水表要进行出厂检定，技术机构要履行水表在安装前的首次检定、 使用周期后续检定以及使用中检验等。所以本文详细介绍民用小口径机械水表的检定程序和要求，供有关人员参考。

摘要：高压验电仪是一种能够检测物体是否带电的仪器，能够对高压设备或输配电线路进行检测，从而确定高压设备或输配电线路是否有电存在，进而保证电力维修人员的生命安全。作业时，电力维修人员手持验电仪主机，并将验电仪金属探头与待测物体接触，若验电仪检测到待测物体带电时，则报警器发出警报，以提醒电力维修人员作出相应的安全措施，从而保证其人身安全。目前国内尚无相关的国家检定规程或者校准规范，给验电仪的溯源带来了诸多困难，鉴于此本文提出了一种实用的验电仪校准方法，原理清晰，操作方便，实用性强。

采用大吨位电子秤作为标准器的质量法流量标准装置，其量值溯源过程需要采用多个、多次加载砝码的方式对其检定。对于没有砝码自动加载系统的标准装置，因空间限制、砝码个数不足等原因造成量值溯源较为困难。本文提出了替代法的试验方法，并从替代法的数学模型出发，分析了替代法标定电子秤的误差来源。并对替代法引入的不确定度进行了评定，根据实例分析了替代法的最大替代次数要求，以保证替代物与标准砝码的质量相当。根据此方法对两台电子秤采用替代法进行了标定，实验结果满足使用要求。

On the basis of the existing ROS trolley, the collection device is designed with SolidWorks and made with a 3D printer; Using Python language and OpenCV computer vision library to program to obtain the position of the object, and using ultrasonic sensor to measure the distance, a campus cigarette end picking robot device is designed. This paper introduces the overall structure and function of the device, and describes the hardware composition of the system manipulator, ROS trolley, control system and collection device in detail; The programming idea and experiment process of the whole system are given. The final debugging results show that the movement state of the finished product model of the device is consistent with the debugging expectation, and the

According to the technical requirements of design for measurability，we card and summarize the main content for evaluation of design for measurability of weapon equipment and requirements of special evaluation for typical application. Through analysis and evaluation of design scheme for measurability of weapon equipment, we can optimize the design scheme and improve the weapon equipment quality.

The new calibration system of sea water temperature and salinity measuring instrument is used to carry out the verification and calibration of sea water temperature and salinity measuring instrument, and simulate the parameters of marine hydrological elements such as temperature and salinity. The new calibration system will change the current situation of seawater temperature and salinity calibration, which takes a long time to calibrate experiments, and relies on the experience of laboratory personnel excessively. The main control system adopts the fuzzy control method and embedded technology to automatically judge the timing of temperature reduction, temperature control and automatic sampling in the constant temperature bath, so as to realize the automation of temperature and salinity calibration experiment. At the same time of improving the speed and accuracy of temperature and salinity calibration experiment, it can realize the whole process of 24 hours uninterrupted, unattended, reduce the work intensity and improve the efficiency of the experiment.

液压拉伸器作为一种高精度螺栓拧紧、拆卸工具，已经广泛应用在汽车、船舶、航空航天，能源、重型机械等各种领域中，而本文是对液压螺栓拉伸器的计量校准方法进行研究并通过各项实验进行验证。

本单位针紫外线加速耐候试验机的温度、湿度、紫外线中心波长和紫外线辐照度四个参数，设计出紫外线加速耐候试验机检定装置。该装置将采用STM32单片机为下位机核心，采集温度、湿度、紫外线中心波长和紫外辐照度四种共12个传感器模块的数据后，通过USR-WIFI232模块进行无线数据传输以及各模块地址分配。将采集的数据发送到上位机labVIEW2018软件开发平台，实现参数的多点实时在线显示、数据存储、生成表格等功能。最终装置实现紫外线波长测量范围为：（200~450）nm，精度±0.5nm；紫外辐照度测量范围为：（0.1~10.0）W/㎡，精度±5%；温度测量范围为：（10~90）℃，精度±0.2℃；湿度测量范围为：（30%~99%）RH，精度±2%RH；温度波动度达到：±0.5℃的技术指标，满足紫外线加速耐候试验机校准规范的要求。

实验室间计量比是质量控制管理中比较常用方法，是控制和衡量各实验室间能力的一个重要手段。通过实验室间的计量比对，能够考察实验室测量量值和出具测量结果的准确一致的程度，同时对实验室环境条件、检校技术人员水平和数据分析处理能力进行考察，能够保证实验室检校能力的可靠性和稳定性。M1等级大砝码检校结果受衡量仪器、人员、环境等因素影响较大，其比对结果可以很好的反映出实验室的检校能力。本文以M1等级大砝码为例，对实验室间计量比实施过程及结果进行分析。

科里奥利质量流量计广泛应用于油品贸易结算中，限于国内油流量检定装置较少，其检定通常采用水流量标准装置进行，为了研究科里奥利质量流量计在水、油介质下的计量性能异同，依托山东省计量院流量标准装置，选取DN50、DN100两个口径质量流量计进行水介质及油介质下的介质影响实验分析，分析表明在考虑不确定度等影响的因素下，两种介质对科里奥利质量流量计计量性能影响很小，体现了质量流量计介质不敏感的特性，为质量流量计的精确计量及油品贸易结算的公平公正提供技术支撑。

电磁流量计准确度等级高，重复性好，在工业应用中极为广泛，是计量技术机构日常检定最多的流量计之一。针对电磁流量计在检定过程中遇到的零点漂移、信号拾取与接地问题进行了总结与探讨，阐述了相应的解决方法，并在检定过程中验证了各方法的可行性与有效性。

本论文提出了运用拉绳位移传感器构建测量场、并采用牛顿迭代法求解飞机大部件对接过程中的位置和姿态的方法。通过对拉绳位移传感器的固定布局和建立约束条件，根据拉绳传感器测出的6个点间的距离，建立位姿求解的理论模型，并运用牛顿迭代法求解对大部件位姿进行求解。基于仿真验证对该方法的有效性进行了评估，求解位姿与理论位姿误差的数量级在10-4。该方法求解位姿时不使用额外的非接触式测量仪器，避免了建立复杂的光学测量场和复杂的空间位姿解算。

Abstract: As a minimally invasive surgical robot, single port laparoscopy robot has many advantages, such as More minimally invasive, quick recovery, cosmetic surgery.The accuracy of its position and posture plays an important role in the smooth operation.Using the C-Track three-dimensional laser scanner as the measurement standard, this paper gives different detection schemes, measurement process and data analysis.Such as the repeated positioning error of the positioning manipulator arm, the positioning error,the repeated positioning error,the posture error of the surgical execution arm and the point taking error of the Piercing device.At the same time, the measurement uncertainty of these methods is given, which proves the feasibility of the above methods.

本文介绍了高锰酸盐滴定法(COD)测定仪的结构和工作原理，根据高锰酸盐滴定法(COD)测定仪的计量特性提出了一种采用重量法对高锰酸盐滴定法（COD）测定仪蠕动泵泵流量进行校准的方法，并对其校准结果的不确定度进行评定，得出了泵流量校准扩展不确定度。

摘要：我国是一个石油进口大国，海关总署最新发布的数据显示，2016年上半年我国进口原油1.865亿吨，创历史最高。其中，今年3月、4月和5月，单月进口量都超过3200万吨，均为历史最高水平。随着国家对原油进口权的放开，原油进口量会再创新高，截止到2016年7月16日，经中国石油和化学工业联合会核查评估，全国已有多个地炼企业获批进口原油使用权，仅山东就有13家地炼企业正式开始享受这一政策。而国际石油贸易中，因海运有运费低，运量大的优势，进口原油超过80%都是由船舶运输进口，本文主要是以船舶卸港相关的卸货行为为主而进行的短量控制工作。

：Thispaperintroducesthemethodofestimatingthesupplementarymaterialquantityofthesilobytheheightofthelevelmeter.ThismethodhasbeenappliedintheprojectofunmannedbeltproductioninAngangSteelGroup.Itsolvestheproblemofmateriallevelmonitoringandsupervisionofhighlevelsilointheproject.Thebulkmaterialfeedingsysteminthesteelmakingplantisresponsiblefortransportingrawmaterialsfromthelowlevelsilotothehighlevelsilo.Thehighlevelsiloundertakesthetaskoftimelyreplenishingrawmaterialsforconvertersteelmaking,soastoensurethatthesupplydoesnotaffectproductioninatimelymanner.Atpresent,themonitoringofthemateriallevelinthehigh-levelsiloandwhetherthefeedingsystemisstarteddependonmanualobservation.Thebadenvironmentonthesiteseriouslyaffectsthehealthoftheoperators.Inthispaper,theradarlevelmeterisusedtosolvetheproblemofhighlevelbin,realizereal-timemateriellevelmonitoring,real-timecalculationofsupplementarymaterialquantity,realizehighandlowlevelalarmandensurenomaterialemissionduringtheloadingprocess.Thecurvefittingmethodandthevolumeformulamethodareintroducedindetailtoestimatethesupplementquantityofthesilo.Thecomparisonexperimentshowsthatthecurvefittingmethodhashigheraccuracyandcanbettersolvethepracticalproblems.Throughtheresearchontheapplicationofradarlevelmeterandtheapplicationofthemathematicalruleofreplenishmentquantity,thisprojecthaslaidasolidfoundationforthesubsequentrealizationoffull-automaticloading.

气体分割器是采用毛细管原理的气体稀释装置，使用时无需通电，应用于测量高浓度可燃气体检测仪时，能够有效降低实际操作中的风险。气体分割器在稀释低浓度可燃气体时，稀释后的气体浓度可通过分割比例直接计算，但稀释高浓度可燃气体时，需要使用皂膜流量计实测标准气体和稀释气体的流量，通过流量比例系数计算稀释后气体的浓度。通过试验结果可以看出，气体分割器具有较高的分割准确度，稀释误差小，在测量高浓度可燃气体检测仪方面具有显著优势。

The statistical analysis of the data of 6000 charging piles randomly selected in an administrative region shows that the annual charging volume and transaction times of charging piles are long tail distribution. 3.3% of the charging piles at the tail, and the annual charging capacity exceeds 55% of the total charging capacity; For 6.7% of the charging piles at the tail, the charging times exceed 37% of the total charging times. The importance factor of charging pile measurement considering annual charging volume and transaction times is proposed as the basis of focused random sampling.

采用光学分度头和专用的校准夹具对倾角仪示值误差进行校准时，校准夹具以及被检倾角仪的安装和理论存在误差，文章对两者的综合安装误差进行了定量误差分析，给出了安装误差数学模型以及不同安装误差时对被检倾角仪示值误差的影响量，得出在安装误差小于0.4°的情况下，对被检倾角仪示值误差的影响为0.002°，能满足校准最高分辨率为0.01°的倾角仪的要求。