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12-03-2008, 04:58 AM #1
Pipe temp vs. fluid temp / Thermocouple install
Hello,
Suppose if I were to measure outside surface pipe temperatures with a contact thermocouple (wrapped in duct tape or something), how accurate would this be in a 1/4" copper pipe? I'm trying to save some time for my degree project and was wondering if this is a viable option.
If not, does anyone have an idea how to get a thermocouple inside of a pipe cheaply? I was originally going to use these special NPT pipe thermocouples but they were too expensive
Regards,
Patrick
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12-03-2008, 07:48 AM #2
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Re: Pipe temp vs. fluid temp / Thermocouple install
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12-03-2008, 04:14 PM #3
Re: Pipe temp vs. fluid temp / Thermocouple install
if using contact thermocouple then try using heat sink paste this will improve both response and accuracy. If you need to prove accuracy then I suggest mapping your thermocouple to known temperatures.
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12-03-2008, 08:54 PM #4
Re: Pipe temp vs. fluid temp / Thermocouple install
Thanks for your responses, I'm going to try the heat sink paste.
How would I go about mapping the thermocouple to a known temp? I'm unfamiliar with this.
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12-03-2008, 09:38 PM #5
Re: Pipe temp vs. fluid temp / Thermocouple install
Start with boiling water, 100°C, 212°F and melting ice 0°C, 32°F.
Calibrate your sensors/thermometer to those two temperatures and you should be OK.Brian - Newton Abbot, Devon, UK
Retired March 2015
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