B&B Electronics ZZ24D-NA(NB,NC,ND)-SR - Manual - Manual (Page 92)

Appendix F: RTD Module
86 Manual Documentation Number: pn7515_ZlinxIO-0712m
Converting a temperature input to a voltage output in Peer-to-Peer Mode:
1. A Pt100 RTD has a temperature range of -200ºC to +650ºC which equals a range of 850 degrees.
2. The voltage range is (10/4096) * 4095 = FS = 9.998V
3. Resolution of FS / 850 degrees equals 11.76 mV per 1 degree ºC.
4. To convert a temperature to a voltage output, perform the following calculation:
 Must offset the temperature by the lower limit, -200 ºC, so Temperature – (-200)
 Therefore, (Temperature – (-200)) * 0.01176 = Voltage output
 For a Temperature of 85 ºC, Voltage = 3.352 V
Converting a temperature input to a current output in Peer-to-Peer Mode:
To convert a temperature to a current output, perform the same calculation shown above but use 20 mA instead of 10 V.