- #1
Robbie-Eng
- 3
- 0
Hey
I've been writting reports on strain gauge and thermistor.
Ive completed my strain gauge report and now i am working on my thermistor report...ive been doing some research on them and i was wondering if this is the correct information i have gathered.
so
I have been asked from my lectuar to produce a report on a thermistor, but using the thermistor to measure fluid level.
here is what i have gathered so far:
When a thermistor is driven by a voltage source, it heats up. If submerged in a liquid, its temperature, and therefore its resistance, will remain relatively constant—as long as the liquid temperature remains relatively constant. If the liquid level drops, however, the thermistor becomes exposed, the heat dissipating effect of the liquid vanishes, the temperature rises, and—for a positive-TC element—the resistance increases.
so if to measure the level of the fluid, if the thermistor is positioned at that level and when submerged in the liquid its resistance remains low giving out a logic 0, but if exposed then its resistance rises causing the thermistor to heat up rapidly, and from this it signals a logic 1.
Is this correct in anwway?
Thanks
Robbie
I've been writting reports on strain gauge and thermistor.
Ive completed my strain gauge report and now i am working on my thermistor report...ive been doing some research on them and i was wondering if this is the correct information i have gathered.
so
I have been asked from my lectuar to produce a report on a thermistor, but using the thermistor to measure fluid level.
here is what i have gathered so far:
When a thermistor is driven by a voltage source, it heats up. If submerged in a liquid, its temperature, and therefore its resistance, will remain relatively constant—as long as the liquid temperature remains relatively constant. If the liquid level drops, however, the thermistor becomes exposed, the heat dissipating effect of the liquid vanishes, the temperature rises, and—for a positive-TC element—the resistance increases.
so if to measure the level of the fluid, if the thermistor is positioned at that level and when submerged in the liquid its resistance remains low giving out a logic 0, but if exposed then its resistance rises causing the thermistor to heat up rapidly, and from this it signals a logic 1.
Is this correct in anwway?
Thanks
Robbie