The principle,equipment and operation of on line measurement of the operation efficiency of large rectifier devices by using input and output method are analyzed,and the structure,specifications and application of Model 900 Efficiency Instrument developed by Yunnan Institute of Measurement and Test are discussed.
In this paper, the structure, bearing mechanism, design and construction procedures of composite bearing body ramming bulb pile are introduced in detail, its advantages and applicable ranges are summarized, and an application case of ramming bulb pile technique in the Qingdao area is used to expound the method for calculating its pile foundation and the measurement and test results of foundation pile.
The main questions in dynamic measurement and test are describled in this paper. Two kinds of dynamic performance index—performance in time domain and in frequency domainare presented. The dynamic calibration、dynamic error、 the establishment of digital dynamic model、the technique of dynamic compensation、 dynamic testing instrumentation and how to use the dynamic sensor correctly are all described systematically。
According to the comprehensive analysis on the results of engineering ground stress measurement and test hole deformation monitoring, general geological model, test hole excavation model and ground stress field distribution model are established.
It describes the special measurement featurs the of Schlumbelger electronic wattmeter by analyzing the measurement and test results of the meter both in the site and in the laboratory. The reasons for the watthour measurement errors between power line 145 of Niangziguan Power Plant and power line 134 of Majiaping Power Station are therefore found.
Supervision of the measurement and test equipment in the Uzbek RLGN
On the whole, the values and stability of the test regime parameters, dimensions and layout of the models, and the measurement and test methods used on the stand correspond to the IEC recommendations and standards.
Why do we need traceability and uncertainty evaluation of measurement and test results
The authors present the policy they have worked out for hydrocephalus patients with special reference to the pressure measurement and test methods and to rCBF, SPECT and transcranial Doppler sonography (TDC) studies.
With our approach, the complexity of measurement and test time are greatly reduced, while keeping high accuracy.