Owner's manual

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 13
Overview Chapter 1
Table 1 - RTD Specifications
RTD Type
(1)
Temperature Range Using
0.5 mA Excitation
Temperature Range Using
1.0 mA Excitation
Maximum
Scaled
Resolution
Maximum
Scaled
Repeatability
Copper 426 10 Ω Not allowed -100…260 °C (-148…500 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
Nickel
618
(2)
120 Ω -100…260 °C (-148…500 °F) -100…260 °C (-148…500 °F) 0.1 °C (0.1 °F) ±0.1 °C (±0.2 °F)
Nickel 672 120 Ω -80…260 °C (-112…500 °F) -80…260 °C (-112…500 °F) 0.1 °C (0.1 °F) ±0.1 °C (±0.2 °F)
Nickel-Iron
518
604 Ω -200…180 °C (-328…338 °F) -100…200 °C (-148…392 °F) 0.1 °C (0.1 °F) ±0.1 °C (±0.2 °F)
Platinum
385
100 Ω -200…850 °C (-328…1562 °F) -200…850 °C (-328…1562 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
200 Ω -200…850 °C (-328…1562 °F) -200…850 °C (-328…1562 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
500 Ω -200…850 °C (-328…1562 °F) -200…850 °C (-328…1562 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
1000 Ω -200…850 °C (-328…1562 °F) Not Allowed 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
Platinum
3916
100 Ω -200C…630 °C (-328…1166 °F) -200…630 °C (-328…1166 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
200 Ω -200…630 °C (-328…1166 °F) -200…630 °C (-328…1166 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
500 Ω -200…630 °C (-328…1166 °F) -200…630 °C (-328…1166 °F) 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
1000 Ω -200…630 °C (-328…1166 °F) Not Allowed 0.1 °C (0.1 °F) ±0.2 °C (±0.4 °F)
(1) Digits following the RTD type represent the temperature coefficient of resistance (α), which is defined as the resistance change per ohm per °C. For instance, platinum 385
refers to a platinum RTD with α = 0.00385 ohm/ohm - °C, or simply 0.00385/°C.
(2) Actual value at 0 °C is 100
Ω per DIN standard.