I have two probes from Chaney Instruments Acu-Rite 036168 Wireless Cooking and Barbecue Thermometers. They are nice metal covered probes that I think contain negative temperature coefficient thermistors. How can I use these to measure accurate temperatures? I know as the temperature range changes I need to correct for the non-linear aspect of the probe, but without a data-sheet I am not sure where to start.
This may be a little hokie, but what you could do is measure the resistance with the thermistor while recording the temperature with another thermometer and heat the system. Such as boiling a pot of water or something similar to the anticipated application
Once you have the manually recorded temperatures from a regular thermometer and the digitally recorded data from the arduino+meat thermometer you can graph them and find the correlation.
OK, but when doing my temperature tests should I use a resister in series or parallel? I usually copy this circuit:
But I don't know what the value of R1 should be. Should I just arbitrarily choose a value, say 10k?
do you have an ohmmeter?
Yes I do.