PT100

[Tom1234]

I would like to use a PT100 sensor from farnell ( http://uk.farnell.com/w/c/sensors-transducers/sensors/temperature-sensors/prl/results?st=pt100&sort=P_PRICE )

firstly i don't know what sensor to choose (class A or class B) and also what circuit to build for this sensor.

Anyone can help me on this issue?

[Sideshow Bob]

I would like to use a PT100 sensor from farnell ( http://uk.farnell.com/w/c/sensors-transducers/sensors/temperature-sensors/prl/results?st=pt100&sort=P_PRICE )

firstly i don't know what sensor to choose (class A or class B) and also what circuit to build for this sensor.

Anyone can help me on this issue?

You have a friend in Google. But let me help you
https://www.google.com/search?q=temperature+handbook+pdf
I can recommend the LABFACILITY TEMPERATURE HANDBOOK and the Maxim handbook but much of the hits on the first page are good material.
After that knock your self out with a search like this
https://www.google.com/search?q=pt100+circuit+design

[javad_amini]

You need to define requirements of your project first. acceptable cost and accuracy, etc. Then you can make a good choice. There are many chips that can be used to utilized PT100. If I remember correctly MAX31865 can be a good choice. As I stated before, you need to define the project requirements first.

Good Luck

[Tom1234]

I was thinking about a range -20 to 200 C.


I would check the ic MAX31865