Title :
The digital measurer of temperature with platinum thermoresistor
Author :
Mamikonyan, B.M. ; Mamikonyan, Kh.B. ; Manukyan, A.M.
Author_Institution :
Electrician & Autom. Dept., State Eng. Univ. of Armenia, Gyumri, Armenia
Abstract :
The measurer is designed for temperature measuring in working conditions in range of 0 to 50°C with platinum resistance thermoconverter (RT) of non-linear standard graduation. It is applied the compensated measuring circuit with four-wire connection of RT, measuring amplifier, ADC of double integration. For linearization of conversion function the positive feedback is applied. The metrological analysis of measurer is carried out. The measurer can provide the temperature measuring with error no more than ±0,2°C.
Keywords :
analogue-digital conversion; electric resistance measurement; feedback amplifiers; linearisation techniques; measurement standards; platinum; temperature measurement; 0 to 50 degC; amplifier; compensated measuring circuit; digital measurer; double integration; four-wire connection; linearization; metrological analysis; nonlinear standard graduation; platinum thermoresistor; positive feedback; temperature measurement; thermoconverter; Electrical resistance measurement; Employee welfare; Feedback; Integrated circuit measurements; Measurement standards; Platinum; Temperature distribution; Temperature measurement; Thermal resistance; Thermoresistivity;
Conference_Titel :
Physics and Control, 2005. Proceedings. 2005 International Conference
Print_ISBN :
0-7803-9235-3
DOI :
10.1109/PHYCON.2005.1514084
