A system for measuring liquid flow based on heat loss of thick film NTC thermistors
A system for measuring flow of liquids (water) based on heat loss was formed of two thick film segmented thermistors, power supply with constant voltages RCV, 8 voltage dividers RN, acquisition card and PC with custom IWF software. The thermistors were placed in two metal or plastic housings connect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Savez inženjera i tehničara Srbije
2015-01-01
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| Series: | Tehnika |
| Subjects: | |
| Online Access: | http://scindeks-clanci.ceon.rs/data/pdf/0040-2176/2015/0040-21761505822L.pdf |
| _version_ | 1819230548391886848 |
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| author | Luković Miloljub D. Nikolić Maria V. Aleksić Obrad S. Stanimirović Zdravko I. Sibinoski Latko Z. Stanimirović Ivanka P. |
| author_facet | Luković Miloljub D. Nikolić Maria V. Aleksić Obrad S. Stanimirović Zdravko I. Sibinoski Latko Z. Stanimirović Ivanka P. |
| author_sort | Luković Miloljub D. |
| collection | DOAJ |
| description | A system for measuring flow of liquids (water) based on heat loss was formed of two thick film segmented thermistors, power supply with constant voltages RCV, 8 voltage dividers RN, acquisition card and PC with custom IWF software. The thermistors were placed in two metal or plastic housings connected in series like and filled with liquid,(water).The first thermistor Th1 is referent and measures the temperature of water incoming to the sensor, while the second thermistor Th2 is the flow sensor and it is selfheated with self current at a constant supply voltage from power source. Using the command from the PC the RCV power source generates constant voltages for powering Th2 in steps of 2V per 5°C of input water temperature increase. The self-heating current I of the Th2 thermistor is measured vs. the water flow rate Q. The water flow rate is defined from the function Q=F(I). The acquisition card measures in multiplex 8 voltages on voltage dividers: each voltage is measured 10 times per second and the computer calculates the average value for each second. |
| first_indexed | 2024-12-23T11:30:49Z |
| format | Article |
| id | doaj.art-478b9e57b9f8414c959975fe5d90414b |
| institution | Directory Open Access Journal |
| issn | 0040-2176 2560-3086 |
| language | English |
| last_indexed | 2024-12-23T11:30:49Z |
| publishDate | 2015-01-01 |
| publisher | Savez inženjera i tehničara Srbije |
| record_format | Article |
| series | Tehnika |
| spelling | doaj.art-478b9e57b9f8414c959975fe5d90414b2022-12-21T17:48:49ZengSavez inženjera i tehničara SrbijeTehnika0040-21762560-30862015-01-0170582282710.5937/tehnika1505822L0040-21761505822LA system for measuring liquid flow based on heat loss of thick film NTC thermistorsLuković Miloljub D.0Nikolić Maria V.1Aleksić Obrad S.2Stanimirović Zdravko I.3Sibinoski Latko Z.4Stanimirović Ivanka P.5University of Belgrade, Center of Multidisciplinary Studies, Belgrade, Belgrade, SerbiaUniversity of Belgrade, Center of Multidisciplinary Studies, Belgrade, Belgrade, SerbiaUniversity of Belgrade, Center of Multidisciplinary Studies, Belgrade, Belgrade, SerbiaIRITEL Institute, Belgrade, Belgrade, SerbiaIRITEL Institute, Belgrade, Belgrade, SerbiaIRITEL Institute, Belgrade, Belgrade, SerbiaA system for measuring flow of liquids (water) based on heat loss was formed of two thick film segmented thermistors, power supply with constant voltages RCV, 8 voltage dividers RN, acquisition card and PC with custom IWF software. The thermistors were placed in two metal or plastic housings connected in series like and filled with liquid,(water).The first thermistor Th1 is referent and measures the temperature of water incoming to the sensor, while the second thermistor Th2 is the flow sensor and it is selfheated with self current at a constant supply voltage from power source. Using the command from the PC the RCV power source generates constant voltages for powering Th2 in steps of 2V per 5°C of input water temperature increase. The self-heating current I of the Th2 thermistor is measured vs. the water flow rate Q. The water flow rate is defined from the function Q=F(I). The acquisition card measures in multiplex 8 voltages on voltage dividers: each voltage is measured 10 times per second and the computer calculates the average value for each second.http://scindeks-clanci.ceon.rs/data/pdf/0040-2176/2015/0040-21761505822L.pdfsensorflowtemperaturethermistors |
| spellingShingle | Luković Miloljub D. Nikolić Maria V. Aleksić Obrad S. Stanimirović Zdravko I. Sibinoski Latko Z. Stanimirović Ivanka P. A system for measuring liquid flow based on heat loss of thick film NTC thermistors Tehnika sensor flow temperature thermistors |
| title | A system for measuring liquid flow based on heat loss of thick film NTC thermistors |
| title_full | A system for measuring liquid flow based on heat loss of thick film NTC thermistors |
| title_fullStr | A system for measuring liquid flow based on heat loss of thick film NTC thermistors |
| title_full_unstemmed | A system for measuring liquid flow based on heat loss of thick film NTC thermistors |
| title_short | A system for measuring liquid flow based on heat loss of thick film NTC thermistors |
| title_sort | system for measuring liquid flow based on heat loss of thick film ntc thermistors |
| topic | sensor flow temperature thermistors |
| url | http://scindeks-clanci.ceon.rs/data/pdf/0040-2176/2015/0040-21761505822L.pdf |
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