I picked up a RB-Ite-91 temperature brick from RS and can’t figure out how to get the unit to share a temperature output in degrees Celsius. I checked out Itead Studio for their data specs. I can wire it up and get the resistive value with their code, but how do I then take this and convert to a temperature?
I didn’t realize how lousy their documentation was as compared to other suppliers.
Thanks!
Unfortunately, the manufacturer doesn’t provide a conversion equation to convert the analog value to Celcius.
They did provide the following temperature to resistance chart, and we know that the thermistor is the bottom half of a voltage divider circuit (the other resistor is 10k), so it would be possible to calculate the proper equation.
Another possibility would be to simply do some tests and measure the analog value at known temperatures, and then make a calibration equation based on that information.
Hope this helps,
Do the math.
F = 9/5 * C + 32
Multiply by 9, divide by 5, then add 32.
Alan KM6VV
