Abstract:The traditional methods calibrating meter\|factor of flowmeters with pulse output are volume measure,weight measure and so on.A new method is introduced as follow:the standard flow is made by a cylinder drived by a servo motor,count stops or starts through twice PC interruption roution,therefore the accurate estimated value of meter\|factor is acqured.

Abstract:At high frequency band,the frequency response error of a peak detector is the high frequency resonance error mainly produced by the distributive parameter.Using the practical measured data,the mathematic model of resonance frequency is established in this paper.According to the predictor of the model,the frequency response error correction of the peak detector has been done.The verification indicates that the frequency response error is greatly decreased after correction.

Abstract:This paper introduces the structure and principle of a SDH equipment clock (SEC) which has very high frequency and phase stabilities.And the relative test result is reported.The test result shows that the SEC has excellent character to track the clock reference.

Abstract:It is a good choose to apply L\-1 Criterion other than least square criterion in data fitting when one or two large errors exist in the measuring data.This paper introduces a new algorithm for L\-1 data fitting based on Gauss\|Newton method through establishing the connection between L\-1 Criterion and least square criterion.Experimental results show that the method can be realised easily.

Abstract:This paper presents the principle and method for measuring various microwave devices' return loss by spectrum analyzer and analyses the uncertainty of measurement.

Abstract:This paper describes a new kind of mode field diameter measuring system of single\|mode fiber.It adopts reference measuring method introduced by national standard,the far field,scan method.It has high accuracy of measurement,high speed and strong anti\|jamming ability and it is easy to be operated.It can not only be used in laboratory but also in plant environment.And it can substitute the same kind of import products.

Abstract:干涉法不仅能测量直角棱镜的|△90°|和塔差|γA|,而且能简便精确地测量△90°、△45°和γA.这些会给光学冷加工在角度修改时带来方便.本文叙述了测量的原理和方法.

Abstract:介绍了利用数字式温度传感器 DS1 6 2 4构成的多路温度测量仪器。它具有线路简单 ,测量精度高的优点 (在 - 5 5～ 1 2 5°C内 ,精度优于 0 .0 5°C) ;带有计算机接口 ,能够实现长时间连续测量。

Abstract:The summation calibrating equipment of mechanical quantity is developed pointing at the small enterprises and research units which have their various kinds of instruments and small scale production.This equipment has very strong adaptability.Its principle and application are presented emphatically.

Abstract:The intelligence portable data processor for three meter is presented in this paper.The heavy data processing of verification for three meter is solved

Abstract:This paper presents the evaluating method and step of the uncertainty of measurement for Rockwell hardness standard equipment in detail.

Abstract:Owing to the popularizing and actualizing of the international standard,the operation concept of the metrological work of the enterprise has been changed greatly.In the mean time,the new task about the metrological work how to practically and effectively serve the enterprise has been put forward.In this paper,combining with the certification of quality system and the practice of qualified certification of metrology test and measurement system,the method and difficult point of the control and management of the subcontractor measurement work during establishing and improving the metrology and measurement of the enterprise have been analized and searched.

Abstract:按照国家标准ＧＢ／Ｔ１９０２２．１（ＩＳＯ１００１２－１）《测量设备的计量确认体系》的要求，就如何开展产品研制过程的计量评审工作，提供了一种具有可操作性的方法，可供产品研制单位制定计量评审程序时参考。