calibration method

The primary purpose of this scientific article is to analyze existing and potential methods of metrological verification (calibration) of level gauges used for accurate metering of oil products in tanks of various types and purposes. This study will consider their key features, advantages, and disadvantages, as well as prospects for development and improvement, considering modern technological advances and requirements of industry standards.

The analysis of requirements for metrological parameters of digital temperature meters and temperature difference meters for solar collectors’ investigations been done in the article. Under the regulations requirements a minimum temperature drop not exceed 1,5 K, and for the maximum relative error of temperature measurement not more ±2% it provide the absolute error of temperature drop measurement near ±0,030 K, and their measurement unit list significant digit 0,01 K.

This work presents a method of in-situ calibrating 3D magnetic sensors based on Hall devices that have linear field characteristics and are non-orthogonal, with known position of each Hall device in relation to the 3D sensor’s substrate. Formulas for calculation of Hall devices linear coefficients are obtained. The method’s efficiency is proved experimentally.