Dyak R. The Standard and Technical Basis of a Metrological Checking Automatization of a Flow Heat Counter.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0411U000978

Applicant for

Specialization

  • 05.01.02 - Стандартизація, сертифікація та метрологічне забезпечення

25-02-2011

Specialized Academic Board

Д 35.052.08

Lviv Polytechnic National University

Essay

The thesis is devoted to the improvement of the normatively-technical principles of metrological verification of thermometers. The analytical observation of existing methods and means of construction of modern devices for automatic verification of thermometers is developed in the thesis. The errors of channels of expense and temperature measuring as well as a heat counter are also analyzed. The terms of application of memberwise and complete methods of verification are illustrated in the paper. The methodology of automated metrology verification of resistive temperature sensors is specified. The structure and algorithm of work for increasing of exactness of digital channels for temperature measuring with double wired connection line and automatic error correction are offered. The possibilities of automation of the entire process of verification are researched in the thesis. Automation of metrological verification of thermometers on the basis of equipment used recently is proved to be impossible as a result of conducted analysis. There is a probability of bringing of errors by an operator. Productivity of verification of these mass devices is insufficient. The problem of automation of metrological verification of thermometers with the use of code-guided measures of resistance, and channels of measuring of temperature on the basis of the multichannel digital thermometer for resistive temperature sensors usage is investigated in the thesis. The results of the experimental research of the system of stabilising of coolant-moderator expense, results of research of metrology reliability of the thermometers of various principles of action, and also the results of launching of a workstation in order to verify thermo transformers of the resistance and an automatic thermometer database are presented in the thesis.

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