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Design of temperature measurement circuit in oxidation kinetics testing for coal spontaneous combustion tendency
- Source :
- Gong-kuang zidonghua, Vol 39, Iss 5, Pp 66-69 (2013)
- Publication Year :
- 2013
- Publisher :
- Editorial Department of Industry and Mine Automation, 2013.
-
Abstract
- High-precision measurement and record for temperature is needed in oxidation kinetics testing for coal spontaneous combustion tendency. Therefore, temperature measurement circuit was designed with high-resolution AD converter AD7714 and three-wire Pt100 thermal resistance as temperature sensor; method of piecewise linear interpolation is adopted for interpolation operation of output value to solve problem of non-strict linearity between input and output caused by nonlinearity of devices. The experiment result shows that AD sampling resolution of the circuit is high up to 0.006 7 ℃, meeting design requirements, and the experiment data has high stability and repeatability.
Details
- Language :
- Chinese
- ISSN :
- 1671251X
- Volume :
- 39
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Gong-kuang zidonghua
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.84d3de828ba0400fb463687a140494d4
- Document Type :
- article