what kind of Signal Conditioning for RTD PT 100 3 wire, to connect in module NI 9205

[paul_us]

 i have module ni 9205, and then i want to connect wit RTD PT 100 3 wire,and i need measure temperature in range 6 to 13 degree celcius, can you recomended to me. What kind of Signal conditioning for RTD PT100 3 wire  with hight accuracy ?
Thank a lot

[JayJayHella]

Hi paul_us,

Unfortunately, the 9205 module does not have integrated signal conditioning for RTDs. However, as you can see starting on page 4 on the link below, a low-pass filter and amplification are usually needed when taking RTD measurements. You could implement this circuitry yourself. 

The Engineer’s Guide to Signal Conditioning

http://download.ni.com/evaluation/signal_conditioning/20712_Benefits_of_Integrated_SC_WP_HL.pdf

If you are looking to purchase a module to do the signal conditioning, the links below may have options that could work for you. 

Taking Temperature Measurements with RTDs: How-To Guide

http://www.ni.com/tutorial/7115/en/

Choosing an RTD or Thermistor Measurement System

http://www.ni.com/white-paper/3643/en/