Varec 2920, Installation And Operation Manual, Page: 179 / 194

Varec, Inc. 169
Chapter B
Appendix B — RTD Resistance - Temperature
Charts
This appendix describes the relationship between temperature and resistance for the three
RTD types that can be used with the 2920 FTT. This information can be used to verify the
accuracy of the RTD probe used with the 2920 FTT.
The following tables are provided:
• “Pt100 RTD Resistance vs. Temperature”
• “Cu100 RTD Resistance vs. Temperature”
• “Cu90 RTD Resistance vs. Temperature”
For troubleshooting instructions, see “Verifying Temperature Data - Checking RTD Resistance”.
Pt100 RTD Resistance vs. Temperature
Pt100
RTD Resistance Temp °C Temp °F
16.76 -204.0 -335.2
18.49 -200.0 -328.0
20.22 -196.0 -320.8
21.94 -192.0 -313.6
23.66 -188.0 -306.4
25.37 -184.0 -299.2
27.08 -180.0 -292.0
28.78 -176.0 -284.8
30.47 -172.0 -277.6
32.16 -168.0 -270.4
33.85 -164.0 -263.2
35.53 -160.0 -256.0
37.21 -156.0 -248.8
38.88 -152.0 -241.6
40.55 -148.0 -234.4
42.21 -144.0 -227.2
43.87 -140.0 -220.0
45.52 -136.0 -212.8
47.18 -132.0 -205.6
48.82 -128.0 -198.4
50.47 -124.0 -191.2