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Author Topic: PT100  (Read 671 times)
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Tom1234
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« on: August 14, 2017, 12:57:28 00:57 »

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?
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Sideshow Bob
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« Reply #1 on: August 14, 2017, 11:09:10 11:09 »

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
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javad_amini
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« Reply #2 on: August 26, 2017, 01:18:49 01:18 »

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
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Tom1234
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« Reply #3 on: August 26, 2017, 08:46:11 20:46 »

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


I would check the ic MAX31865
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