Abstract:Some problems about setting up of the measurement standard of instantaneous waveform recorder is described in this paper,including the construction of the calibation system,calibration items,the calibration method,the selection of calibration equipment and several related factors effecting on the calibration uncertainty.

Abstract:In this paper,the basic concept of the bluetooth technology has been discussed first,and then the character of the bluetooth access control technology has been analyzed.Further more,pointing to the existent problems of the bluetooth wireless access and its development,our own proposal has been proposed as well.

Abstract:A kind of high voltage divider presented in this paper is a high value resistor also Combined with the universal QJ36 bridge,galvanometer and high voltage power supply,a set of equipment for calibrating high resistance box and high voltmeter has been composed.It is adaptive for province class,bureau and large\|scale interprise's metrological units.

Abstract:This paper introduces material characteristics of the ZrO Fine Ceramic and merits of the ZrO\-2 Ceramic Gauge Blocks,then emphatically introduces testing results of main technological parameters of the Ceramic Gauge Blocks.The Ceramic Gauge Blocks have a good market with the features of high hardness,wear resistance,good toughness,corrosion resistance and resistance to oxidation,thermal expansion coefficient matching on steel gauge blocks,good wringing,size stability and easy maintenance.

Abstract:Adapting the voice technology to the intelligent instrument can change the "deaf\|mutism" of the traditional instrument and make the instrument's operating status more clear and its operation more reliable.The synthesis and output techniques are introduced and the method of applying the voice technology to the intelligent instrument is explored in this paper.

Abstract:The curve measurement is always the key point of the geometric measurement.The measuring principle of the known and unknown curves is described in this paper.The principle is using spline B to fit the curve and having the aid of the least square method to do the best fitting and diviation processing.

Abstract:A method for measuring and calibrating the dynamic performance of accelerometer is described in this paer.The realizing principle and resolving approach of the main parts of the system is presented in detail.The collectting and processing methods of the dynamic signal during the realizing process of the dynamic calibration are presented emphatically.

Abstract:The operation principle of the liquid phase chromatographic analyzer is presented simply.The common failure is analyzed and the handling method is proposed.

Abstract:Some issues pointing to the quantity and location of the detecting holes of the total and back pressures and the form of the profile of the detecting stem of the mean velocity tube flowmeter have been discussed.Several structure forms are presented in detail.The practical flow measurement calculation formula is proposed.Several factors effecting on the precission of measurement are analyzed.A proposal for developing this product is put forward finally.

Abstract:The evaluation of uncertainty of the standard equipment is presented when using the second\|class standard gauge block,as the standard and the contact interferometer as the comparator.

Abstract:In this paper,the uncertainties of the main performance parameters of the analogy oscilloscope,such as the vertical deflection factor,the scanning time factor and the pulse instantaneous response,are presented in detail.

Abstract:The principle of ARINC 429 signal decoding in air data system is introduced in this paper.A high efficiency air data test decoding method,the diagram of the system and the software realization are introduced also.