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many cases, metrological self-monitoring opens up even greater possibilities. The organization
of metrological self-monitoring in sensors is the most relevant. Metrological self-observation
relies on additional measurement data available or artificially obtained. Metrological self-
control theory is a branch of invariance theory that is used to reduce the influence of certain
factors on the measurement result [7]. Each of them discusses ways to fill the basic equation of
changing the measured quantity with one or several additional equations. However, in
invariance theory, the purpose is to reduce some of the influencing quantities that damage the
original equation, and metrological self-control is aimed at highlighting the error that results
from such distortions. In general, it is not possible to fully cover the effects of a hazardous
exposure, but it is possible to assess the effects of this exposure. Analyses show that the value
of sensors with metrological self-monitoring in their serial production should not exceed 30-
40% of the value of a similar sensor without this function.
The introduction of a new metrological procedure - metrological self-monitoring - is
associated with the development of new normative documents in metrological practice.
Considering the globalization of the market for measuring instruments and metrological
services, the requirements set out in national standards should take into account foreign
experience and strive to contribute to the formation of the international regulatory framework.
Therefore, the development of any relevant standard should be accompanied by a discussion of
its basic provisions in Uzbekistan and abroad. First of all, manufacturers the measurement tool
through terminology and users should communicate with metrological self-monitoring and it
should be standardized. The lack of a common language, especially in the conditions of rapid
scientific and technological development greatly complicates communication between
professionals and makes it difficult to find the necessary information, hinders the development
of science and technology, and provides unfair competition. The second direction of
standardization is the systematization of metrological self-control methods. Such
systematization will help to accelerate the development of new measuring instruments with
metrological self-monitoring, highlight their characteristics and facilitate the exchange of
experience.
It is necessary to standardize the requirements for measuring instruments (primarily
sensors) with metrological self-monitoring. Obviously, the reliability of its results can vary
depending on the decisions made by the developer. Accordingly, the price of sensors may also
vary. Metrological self-monitoring features performed on the sensor, which are important for
the consumer to eliminate unfair competition, should be reflected in the documentation for one.
The third direction is related to the standardization of test methods that prove that the
characteristics of metrological self-control are consistent with those specified in the documents.
The standard should ensure that the parameters of the sensors are comparable and that the
products from different manufacturers are interchangeable.
Normative documents stipulate that in the systematization of metrological self-
monitoring methods, the high-precision instrument (standard) should have metrological
reliability than the main measuring transducer, the metrological serviceability of which is
controlled.
The simplest example of the organization of the systematization of metrological self-
monitoring methods for measuring temperature is a sensor containing a capsule mounted on a
metal; its melting point is taken as the value of the standards. The rate of change of temperature
measured during melting or solidification of a metal decreases significantly, forming a
temperature-time diagram. Based on the deviation of the measured temperature at the melting
point of the metal (solidification) from the value of the standards, it is possible to estimate the
metrological serviceability of the sensor.
Systematization of metrological self-monitoring methods is similar to the automatic
calibration procedure. Typically, the measurement can be performed at limited surface of the
range or at the dynamic characteristics of the sensors. Systematization of metrological self-
monitoring methods is a qualitatively new operation in metrological support. It involves the
