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.
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Radojcic, Branka M
AU - Aleksić, Obrad
AU - Luković, Miloljub
AU - Nikolić, Pantelija M.
PY - 2011
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/470
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-Inst Electrical Electronics Engineers Inc, Piscataway
T2 - IEEE Sensors Journal
T1 - A Thermal Sensor for Water Using Self-Heated NTC Thick-Film Segmented Thermistors
EP - 1645
IS - 8
SP - 1640
VL - 11
DO - 10.1109/JSEN.2010.2103309
ER -
@article{
author = "Nikolić, Maria Vesna and Radojcic, Branka M and Aleksić, Obrad and Luković, Miloljub 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-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "A Thermal Sensor for Water Using Self-Heated NTC Thick-Film Segmented Thermistors",
pages = "1645-1640",
number = "8",
volume = "11",
doi = "10.1109/JSEN.2010.2103309"
}
Nikolić, M. V., Radojcic, B. M., Aleksić, O., Luković, M.,& Nikolić, P. M.. (2011). A Thermal Sensor for Water Using Self-Heated NTC Thick-Film Segmented Thermistors. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 11(8), 1640-1645.
https://doi.org/10.1109/JSEN.2010.2103309
Nikolić MV, Radojcic BM, Aleksić O, Luković M, Nikolić PM. A Thermal Sensor for Water Using Self-Heated NTC Thick-Film Segmented Thermistors. in IEEE Sensors Journal. 2011;11(8):1640-1645.
doi:10.1109/JSEN.2010.2103309 .
Nikolić, Maria Vesna, Radojcic, Branka M, Aleksić, Obrad, Luković, Miloljub, Nikolić, Pantelija M., "A Thermal Sensor for Water Using Self-Heated NTC Thick-Film Segmented Thermistors" in IEEE Sensors Journal, 11, no. 8 (2011):1640-1645,
https://doi.org/10.1109/JSEN.2010.2103309 . .
