A simple thermal (heat loss) sensor system was designed in a small plastic tube housing using a negative thermal coefficient (NTC) thick-film thermistor as a self-heating sensor. The voltage power supply [range constant voltage (RCV)-range constant voltage] uses the measured input water temperature to select the applied voltage in steps (up and down) in order to enable operation of the sensor at optimal sensitivity for different water temperatures. The input water temperature was measured using a “cold” NTC thick-film segmented thermistor. The measured calibration curves were modeled. Additional calculated curves were interpolated between the experimental curves in fine steps to cover each temperature of input water and can be used for determining the water volume flow rate or water velocity. The realized prototype flow meter inertia, stability, repeatability, and tolerance were measured and analyzed. The proposed intelligent RCV thermal flow meter system will include a smart power sup...ply with range-constant-voltages (auto-range), a simple acquisition card and custom designed flow meter software.
Keywords:
calibration / flow sensors / thermistors / thick film sensors
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Radojčić, B. M.
AU - Aleksić, Obrad S.
AU - Luković, Miloljub D.
AU - Nikolić, Pantelija M.
PY - 2011
UR - https://dais.sanu.ac.rs/123456789/733
AB - A simple thermal (heat loss) sensor system was designed in a small plastic tube housing using a negative thermal coefficient (NTC) thick-film thermistor as a self-heating sensor. The voltage power supply [range constant voltage (RCV)-range constant voltage] uses the measured input water temperature to select the applied voltage in steps (up and down) in order to enable operation of the sensor at optimal sensitivity for different water temperatures. The input water temperature was measured using a “cold” NTC thick-film segmented thermistor. The measured calibration curves were modeled. Additional calculated curves were interpolated between the experimental curves in fine steps to cover each temperature of input water and can be used for determining the water volume flow rate or water velocity. The realized prototype flow meter inertia, stability, repeatability, and tolerance were measured and analyzed. The proposed intelligent RCV thermal flow meter system will include a smart power supply with range-constant-voltages (auto-range), a simple acquisition card and custom designed flow meter software.
PB - IEEE
T2 - SIEEE Sensors Journal
T1 - A thermal sensor for water using self-heated NTC thick-film segmented thermistors
SP - 1640
EP - 1645
DO - 10.1109/JSEN.2010.2103309
UR - https://hdl.handle.net/21.15107/rcub_dais_733
ER -
@article{
author = "Nikolić, Maria Vesna and Radojčić, B. M. and Aleksić, Obrad S. and Luković, Miloljub D. and Nikolić, Pantelija M.",
year = "2011",
abstract = "A simple thermal (heat loss) sensor system was designed in a small plastic tube housing using a negative thermal coefficient (NTC) thick-film thermistor as a self-heating sensor. The voltage power supply [range constant voltage (RCV)-range constant voltage] uses the measured input water temperature to select the applied voltage in steps (up and down) in order to enable operation of the sensor at optimal sensitivity for different water temperatures. The input water temperature was measured using a “cold” NTC thick-film segmented thermistor. The measured calibration curves were modeled. Additional calculated curves were interpolated between the experimental curves in fine steps to cover each temperature of input water and can be used for determining the water volume flow rate or water velocity. The realized prototype flow meter inertia, stability, repeatability, and tolerance were measured and analyzed. The proposed intelligent RCV thermal flow meter system will include a smart power supply with range-constant-voltages (auto-range), a simple acquisition card and custom designed flow meter software.",
publisher = "IEEE",
journal = "SIEEE Sensors Journal",
title = "A thermal sensor for water using self-heated NTC thick-film segmented thermistors",
pages = "1640-1645",
doi = "10.1109/JSEN.2010.2103309",
url = "https://hdl.handle.net/21.15107/rcub_dais_733"
}
Nikolić, M. V., Radojčić, B. M., Aleksić, O. S., Luković, M. D.,& Nikolić, P. M.. (2011). A thermal sensor for water using self-heated NTC thick-film segmented thermistors. in SIEEE Sensors Journal
IEEE., 1640-1645.
https://doi.org/10.1109/JSEN.2010.2103309
https://hdl.handle.net/21.15107/rcub_dais_733
Nikolić MV, Radojčić BM, Aleksić OS, Luković MD, Nikolić PM. A thermal sensor for water using self-heated NTC thick-film segmented thermistors. in SIEEE Sensors Journal. 2011;:1640-1645.
doi:10.1109/JSEN.2010.2103309
https://hdl.handle.net/21.15107/rcub_dais_733 .
Nikolić, Maria Vesna, Radojčić, B. M., Aleksić, Obrad S., Luković, Miloljub D., Nikolić, Pantelija M., "A thermal sensor for water using self-heated NTC thick-film segmented thermistors" in SIEEE Sensors Journal (2011):1640-1645,
https://doi.org/10.1109/JSEN.2010.2103309 .,
https://hdl.handle.net/21.15107/rcub_dais_733 .
