High frequency temperature recorder
High frequency temperature recorder
(OP)
I am looking to source a high frequency temerature recorder. It would need to scan at least 5 times per second. So far I have only sourced one that will do one scan per second.
Any ideas?
I picked this forum as I reckon this would be a requirement for measuring temps in an internal combustion chamber.
Speedy.
Any ideas?
I picked this forum as I reckon this would be a requirement for measuring temps in an internal combustion chamber.
Speedy.





RE: High frequency temperature recorder
If you take a thermistor or RTD, you can certainly run that into a 16-bit A/D with 10-100 times the data range you are asking for.
TTFN
RE: High frequency temperature recorder
I have found some software at
www.picotech.com
which may do the trick. I'm gettign clarification on this at the moment.
Cheers,
Speedy
RE: High frequency temperature recorder
A.
RE: High frequency temperature recorder
Good point. I was thinking that myself also.
There is also a nice bit of metal in the retainer, which the tip of the probe sits into. All this protection is required for the high temps amd pressure of the explosion.
I was told that it would need to be a least 5 per second. I want to use the same thermocouple on the m/c as I want to see what it is measuring.
Speedy
RE: High frequency temperature recorder
If you need to perform math upon the resulting signal there may be a way to make it simulate an audio signal. Then any computer can record it and I think a matlab code could be written to analyze it.
(good luck, this is similar to what I'm going to attempt to do to the signal off of a CCD laser displacement sensor. I'm not sure it will work.)
nick
RE: High frequency temperature recorder
I had a similar situation once. The only couple we found that responded fast enough (low thermal mass) was a platinum type S couple that was made out of hair fine wire. It was a B#t*h to weld the couple. We had to buy a micro actylene torch and let our welder practice a bit. We let the couple hang out of the insulating tube about 1/8-1/4 to prevent the tube from adding thermal mass. I don't remember our exact sampling rate, but it was fast enough for our application which was measuring a high power laser pulse interaction with a target.
Timelord
RE: High frequency temperature recorder