Hum... to capture an actual change, if there is one? (yeah, there shouldn't be one)
Check out these spec sheets:
Class A PRTD element
http://www.omega.com/Temperature/pdf...N_2PT100KN.pdf
Class B PRTD element
http://www.omega.com/Temperature/pdf...D_ELEMENTS.pdf
Response time:
Class A
Water velocity: 0.4 m/s
50% response: 0.2 second (best element)
90% response: 0.6 seconds
Class B
Water velocity: 0.4 m/s
50% response: 0.7 second (best element)
90% response: 2.0 seconds
I suppose that the response time isn't important, given my setup, but it would be, under the original idea of using a controller for a fan-based cooling solution.