This is going to be somewhat of a continuation of the thread called "Proportional Control Circuit w/ Thermocouple".
My focus at the moment is finding a good system to quickly detect air temperature changes in air flowing from a circular tube about 3" in diameter.
So far I have messed with Thermistors and Thermocouples. Both seem to be quick but not quick enough for my liking.
Airflow meters in some automobiles consist of simply one wire spanning across the intake tube, perpendicular to the air flow. This is some kind of very thin resistance wire that has current passed through it to warm the wire up, but also provides the computer with a resistance that changes depending on the amount of air flowing by and cooling the wire.
What I am wondering now is, could I use this kind of system on a smaller scale? Say....if I had a ultra thin wire spanning across where I want to measure the temp or maybe even a "T" for more accuracy and a circuit to read the resistance and provide an output for the controller?
What do you guys think of this idea?
My focus at the moment is finding a good system to quickly detect air temperature changes in air flowing from a circular tube about 3" in diameter.
So far I have messed with Thermistors and Thermocouples. Both seem to be quick but not quick enough for my liking.
Airflow meters in some automobiles consist of simply one wire spanning across the intake tube, perpendicular to the air flow. This is some kind of very thin resistance wire that has current passed through it to warm the wire up, but also provides the computer with a resistance that changes depending on the amount of air flowing by and cooling the wire.
What I am wondering now is, could I use this kind of system on a smaller scale? Say....if I had a ultra thin wire spanning across where I want to measure the temp or maybe even a "T" for more accuracy and a circuit to read the resistance and provide an output for the controller?
What do you guys think of this idea?
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