标准电阻
- 网络standard resistor
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通过对标准电阻两端直流电压的准确测量,就可判断1805B在各档的直流替代功率是否满足要求,本文最后给出了直流替代功率所对应的直流电压范围。
By the accurate measuring to the voltage across the standard resistor , it can be known whether the DC substitution power of each range of the 1805B RF control unit meets our demands . Finally , the range of DC voltage corresponding to DC substitution power is provided .
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对直流标准电阻两种检定方法的探讨
Discussion on Two Methods for the Verification of DC Standard Resistor
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为了获得较高的效率,所设计的E类负载网络由短截线构成,可以匹配E类负载电阻至标准电阻且抑制高至5阶的谐波。
The proposed Class-E load network is composed of short-stub , which matches the optimum load resistance to the standard resistance and facilitates harmonic suppression of up to 5th order for maximum efficiency .
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该系统采用Fluke公司的多功能信号发生器Fluke5520A输出高精度的标准电阻来进行电桥检定,计算机与Fluke5520A信号发生器之间的通信采用GPIB总线技术。
This system used Fluke 5520A as a multi-functional signal generator which can output standard resistance to calibrate DC bridges . GPIB bus technology was applied between computer and Fluke 5520A .
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虚拟仪器在标准电阻检定中的应用
Application of virtual instruments in the check of standard resistance
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高精度标准电阻智能比较仪
Standard Resistance Intelligence Comparator with High Accuracy
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测试采用与标准电阻相比较的方法,消除了测试电流不稳定性对测量值的影响。
Four-segment connecting and standard resistance comparison methods are adopted to reduce the system error .
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研究表明:由于热管优良的等温特性,标准电阻温度的稳定性显著提高。
Studies indicated that due to the excellent isothermal characteristics of heat pipes , the temperature stability of the standard resistor was significantly improved .
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介绍了一种取代传统标准电阻箱的数字化智能有源直流标准电阻器,它由标准电阻与有源电路箱组成,用于对各种类型的直流电阻测量仪进行校验。
This paper introduces a digital and intelligent active direct current resistor box , which calibrates various direct current resistance measurement devices substituting conventional standard resistor box .
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通过对标准电阻多次测量,采用直线拟合法对新研制的电导信号测量仪在不同增益值的测量范围内进行系统标定,并获得5个标定模型,为进一步进行电导测量实验奠定了基础。
Through multiple measurements of standard resistance , the proposed instrument was calibrated by adopting linearity fitting method and five calibration models were obtained in different measurement range .
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对实验数据计算的结果表明,在偏离20℃较大的温域内,该式适于作标准电阻的温度公式。
The calculated results show that the formula is suitable as approximate resistance-temperature formula of standard resistors in case of the temperature of standard resistor being far away from 20 ℃ .
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提出一种仅用万用表和标准电阻就可以准确测量出直流母线和支路负荷正对地电阻、负对地电阻的新测量方法,这种方法能准确查找绝缘低故障支路;
This paper describes a new method by which the positive , negative resistance to ground of DC bus and branch could be tested precisely by mere use of universal instruments and standard resistors .
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结果标准电阻测量结果的偏差均小于5%,4个不同水平的全血β-HB标本回收率为92.4%~96.3%;
Results The biases of four different levels of standard resistor stripe were all less than 5.0 % , the recovery of four levels of whole blood standard solution were among 92.4 % ~ 96.3 % .
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标准铂电阻温度计重要参数R(tp)值的获取
Acquisition of R_ ( tp ) Value of Standard Platinum Electric Resistance Thermometer
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利用EXCEL实现对标准铂电阻温度计正温段分度表的计算
Applications using EXCEL in calculating the reference tables of standard platinum resistance thermometer from to the freezing point of zinc
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该仪器输入标准铂电阻温度传感器RTD(ResistanceTemperatureDetector)信号,采用比例积分微分PID(ProprotionalIntegralDiffe鄄rential)控制算法,输出0~10mA电流控制功率加热元件。
The device acquires standard Pt RTD ( Resistance Temperature Detector ) signal , applies PID ( Proportional Integral Differential ) algorithm and outputs 0 ~ 10 mA current to control power-heating component .
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关于标准铂电阻温度计的检定规程的修订
Revision of Verification Regulation of Standard Platinum Resistance Thermometer
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ITS-90标准铂电阻温度计的计算问题
Calculation of standard platinum resistance thermometer in the international temperature scale of 1990
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标准铂电阻温度计的新偏差函数
A New Deviation Function for Standard Resistance Thermometer
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标准铂电阻温度计在0~30℃范围内的不确定度评定
Evaluation of Uncertainty of Standard Platinum Resistance Thermometer in the Temperature Range from 0 to 30 ℃
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射频识别标签芯片中基准电压源的设计静电高压标准装置电阻分压器频率特性改进方法研究
The Design of A Bandgap Reference Applied in the RFID Chip Improving Frequency Characteristic of Resistance-based Voltage Divider
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用锌凝固点和水沸点检定二等标准铂电阻温度计的扩展不确定度评定
Uncertainty Evaluation of Calibration of Secondary Standard Platinum Resistance Thermometer by Using Zinc Freezing Point and Water Boiling Point
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新型标准铂电阻温度计检定装置锌/锡凝固点、水三相点的试验
Tests on solidifying point of Zn & Sn , water three-phase point for a new type standard verification equipment of platinum resistance thermometer
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本文的分析结果可用于该温区内使用标准铂电阻温度计测温结果的不确定度分析。
The analysis results may be helped on the evaluation of uncertainty in measurement using standard platinum resistance thermometer in this temperature range .
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标准接触电阻小于100Ω;绝缘电阻值大于1×1016Ω-cm;
The standard contact resistance of the button is less than 100 Ω, and the insulating resistance is greater than 1 × 10 16 Ω cm .
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2000年,国家质量技术监督局计量司下达了大区级计量技术机构间标准铂电阻温度计的比对任务。
In 2000 , the State Bureau of Technical Supervision of China assigned a mission to arrange a standard platinum resistance thermometer comparison among 7 main laboratories in the country .
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论文对产生误差的因素进行了全面的理论分析,并采用标准铂电阻与待测铂电阻比对进行电压测量.实验证明本设计达到预期的要求。
This article gives overall theory analysis around the factors of producing error , and measures the voltage though the method of contrasting between standard platinum resistance and await measuring platinum resistance The experiment proves that original designs has reached the expected demand .
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为了适应我国加入WTO以后,鉴定结果国际互认的要求,从直流量子化霍尔电阻标准导出交流电阻标准从而完成交直流电阻标准转换的工作已迫在眉睫。
In order to keep consistency with international units after joining the WTO , it is urgent to accomplish the transform of AC / DC quantum Hall resistance standard .
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本文给出中国云南仪表厂研制的标准铑铁电阻温度计在0.527K范围内的R-T特性,在4.2K和24.5K的稳定性,及0.54.2K的自热效应。
The resistance versus temperature characteristic , self-heating effect and stability of a type of standard rhodium-iron resistance thermometer made by Yunnan Instrument Factory in China have been studied in the temperature range between 0.5 and 27K .
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标准铑铁电阻温度计内插方程的研究
An Investigation on the Standard Rhodium-Iron Resistance Thermometer Interpolation