pid accuracy and sensor type??
I posted the question below in the electric brewing forum but it seems no one answers, so I thought I'd try here. My question is:
My pid manual says "Indication and control accuracy 0.1℃, ±0.2%FS " What does this mean and how accurate can I expect the temperature measurements to be???
Thanks for any help!
Previous post in Electric Brewing:
I've recently bought a sestos PID with the aim of upgrading my brewing system to a herms type system.
When reading the PID instructions I see that the accuracy of the PID is quoted as "Indication and control accuracy 0.1℃, ±0.2%FS ".
My question is what does this mean???
My understanding is that it says the PID reports back in 0.1C increments and 0.2%FS is 0.2% of the full scale accuracy.
If I use a k-type thermocouple the scale is -50 to 1350C i.e. 1400C full scale. So the accuracy is 0.2% x 1400C = +/-2.8C - this seems bad??? Is this an offset that doesn't change is is it really saying that my reading is within 6C ?
If I used a CU50 the range is -50 to 150C and the accuracy is +/- 0.4C
Or a PT100 -200 to 600 so an accuracy of +/- 1.6C
So should I use CU50 ?? or have I misunderstood ????