Theprimary reference standardinstrument for calibration at the top of thecalibration chainis a helium gas thermometer, a platinumresistance thermometer, or a narrow-bandradiation thermometeraccording to the temperature range of the instrument being calibrated, as explained at the end of the last section...
algorithmsensorsdeviation functionsindustrial grade platinum resistance thermometers20 to 273.16 KAn algorithm is developed to derive optimized calibration procedures for practical thermometers. The algorithm, utilizing a set of calibration data for one kind of practical thermometer, analyses the characteristics...
Background Any thermometer is subject to loss of accuracy with time and use. Hand-held thermometers, such as bi-metal or certain liquid in glass models,..
Amontons' thermometer needs to be integrated with a barometric reading; an important error arises from the different density of mercury during calibration and usage. The calibration was made in winter and at the upper point the thermometer was at 100 °C, while the barometer remained near 0 °...
The radiation temperature measured by a radiation thermometer is often lower than the sur- face temperature of the measured object, since the surface emissivity is usually lower than the emissivity of an ideal blackbody (the emissivity of a blackbody is 1 but the emissivity of a glossy copper ...
S. Towards calibration of the TEX86 palaeothermometer for tropical sea surface temperatures in ancient greenhouse worlds. Org. Geochem. 38, 1537–1546 (2007). 10. Sinninghe Damsté, J. S., Hopmans, E. C., Schouten, S., van Duin, A. C. T. & Geenevasen, J. A. J. Crenarchaeol:...
We describe here the design and performance of a current sensing noise thermometer using a low TDC SQUID as the front end amplifier. The DC SQUID is used t... CP Lusher,J Li,VA Maidanov,... - 《Measurement Science & Technology》 被引量: 63发表: 2001年 ...
It is widely accepted that KI is not a geo-thermometer (Frey 1987) and if not calibrated with other independent methods to determine temperatures (as VR maturity modelling), a shift like that should have no important metamorphic P–T consequences. Compared to the VR (OMR) iso-reflectance ...
The daily average air temperature and reservoir levels are applied to the dam. Three blocks of the dam are selected as benchmarks which are No. 13 (middle block), No. 9 and No. 17 as seen in Fig. 2(b). Also, Fig. 3 shows the temperature variation in the central thermometer for ...
Soil temperature 24 °C At 5 cm depth measured with a thermometer Once a week 2.3. Inverse modelling Inverse modelling of DayCent parameters was accomplished using a model-independent parameter estimation software package PEST (Doherty, 2010). PEST allows independent parameter estimation using a nonlin...