Сomplex approach to certification and metrological estimation the state of digital seismometric registrators
The modern stage of the latest metrological achievements is being intensively deve-loped in our country in new methodological directions that are based on new scientific and technical achievements. The using of metrologically certified devices of different types and with different metrological parameters increases the level of confidence in the results of these works, because the relative comparison of the results of these works allows potential customers to choose the most useful and effective method for obtaining the desired results. This article presents the results of joint scientific and technical works for the methodology of certification of the calibration developed and patented device and the results of using an already certified calibration device for metrological determination of accelerometer parameters, measurers displacements and velocities. This article also shows that one of the important areas of such work on the metrology of measuring devices in the area of seismology is also to determine the amplitude-frequency characteristics or amplitude-frequency and phase characteristics of different devices for measurement velocity, acceleration or displacement for the using of these devices in modern automated complex systems for determination of various parameters of seismic events such as regi-onal, local and teleseismic.
The article also presents comparative analyzes of experimental results of work on determining the frequency characteristics of the calibration device in different areas of measurements — displacement, velocity and acceleration. Obtaining these important results for assessing the state of various other seismological devices allowed experimentally do it for possible determination the presence of different types of physical differences in the regions of the same frequency range for displacement's and velocity's measurers. Compliance of the certificate with the requirements of the international metrological certification system ISO/IEC17025, obtained for the calibration device had been ensured by SE «Ukrmetrteststandart».
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