The automated calibration technique for a trimming inaccuracy (calibration tolerance) of quartz resonator using in the universal precision frequency-to-digital converter is described in the paper. It was shown that such technique can be used also for reducing an error due to a quartz crystal aging and a temperature drift. The experimental technique and results for converter’s error research in ...

In the proposed paper a possibility of automation of calibration of liquidin-glass thermometers is discussed. Temperature readings are taken with the use of a measuring system that consists of a standard calibration facility, the video camera, and the personal computer that executes the program for image processing and analyses. Once the reading of temperature is extracted from an acquired imag...

A revised calibration is presented relating the oxygen isotope composition of the aragonite-secreting sclerosponge Ceratoporella nicholsoni, oxygen isotope composition of seawater, and ambient water temperature. This new relationship has been obtained using high-resolution dO data measured in sclerosponges from the Bahamas and Jamaica compared to ambient temperature measurements and dO values o...

When spectral variation caused by factors different from the parameter to be predicted (e.g. external variations in temperature) is present in calibration data, a common approach is to include this variation in the calibration model. For this purpose, the calibration sample spectra measured under standard conditions and the spectra of a smaller set measured under changed conditions are combined...

Calibration of spectral transmissivity of the collection and transmission optics is one of the most crucial issues for the Thomson scattering diagnostic system. Radioactivation of the vacuum vessel in ITER makes it difficult to calibrate spectral transmissivity in areas near the vacuum vessel. By using an additional calibration laser whose wavelength differs from those of the diagnostic laser a...

Infrared tympanic thermometers (ITTs) are easy to use and have a quick response time. They are widely used for temperature measurement of the human body. The accuracy and uncertainty of measurement is the importance performance indicator for these meters. The performance of two infrared tympanic thermometers, Braun THT-3020 and OMRON MC-510, were evaluated in this study. The cell of a temperatu...

Microwave radiometers are valuable for obtaining geophysical information such as the ocean surface salinity, stratiform precipitation, water vapor, temperature, soil moisture, vegetation cover, and others [1]. These environmental monitoring applications of passive microwave remote sensing systems require precision measurements of brightness temperatures over a range of more than 300K with absol...

This paper proposes two interesting applications of the approach to uncertainty evaluation and representation in terms of Random-Fuzzy Variables. One covers the expression of the calibration uncertainty of gauge blocks, and one considers unknown temperature variations, with respect to temperature at calibration time, in expressing a voltmeter uncertainty. Both considered examples show that the ...

Temperature can be measured via emitted thermal radiation of the measured object using Max Planck’s law of thermal radiation, which describes the emission of thermal radiation as a function of temperature of an ideal black body. However, thermal radiation measurement requires accurately calibrated detectors. The calibration of such detectors has been significantly improved in the last years, yi...

Soil moisture sensors can help to reduce the amount of water needed for irrigation. In this paper we describe the PlantCare soil moisture sensor as a new type of heat dissipation sensor, its calibration and the correction for temperature changes. With the PlantCare sensor it is possible to measure the matric potential indirectly to monitor or control irrigation. This sensor is based on thermal ...