Rockwell Automation 1746-NR8 SLC 500 RTD/Resistance Input Module User Manual - Manual (Page 104)

Publication 1746-UM003A-EN-P
A-4 Specifications
RTD Accuracy and Temperature Drift Specifications
Input Type 0.25 mA Excitation 1.0 mA Excitation
Accuracy
(1)
(1) The accuracy values assume that the module was calibrated within the specified temperature range of 0°C to +60°C (+32°F to +140F).
Temperature Drift
(2)
(2) Temperature drift specifications apply to a module that has not been calibrated.
Accuracy
(1)
Temperature Drift
(2)
Platinum
(385)
(3)
(3) The digits following the RTD types 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
Ω
/
Ω
-°C or simply 0.00385/°C.
100
Ω
±0.5°C
(±0.9°F) ±0.012°C/°C
(±0.012°F/°F) ±0.7°C
(±1.3°F) ±0.020°C/°C
(±0.020°F/°F)
200
Ω
±0.6°C
(±1.1°F) ±0.015°C/°C
(± 0.015°F/°F) ±0.7°C
(±1.3°F) ±0.020°C/°C
(±0.020°F/°F)
500
Ω
±0.7°C
(±1.3°F) ±0.020°C/°C
(±0.020°F/°F) ±0.5°C
(± 0.9°F) ±0.012°C/°C
(±0.012°F/°F)
1000
Ω
±1.2°C
(±2.2°F) ±0.035°C/°C
(±0.035°F/°F) ±0.4°C
(±0.7°F) ±0.010°C/°C
(±0.010°F/°F)
Platinum
(3916)
(3)
10
Ω
±0.4°C
(±0.7°F) ±0.010°C/°C
(± 0.010°F/°F) ±0.6°C
(±1.1°F) ±0.015°C/°C
(±0.015°F/°F)
200
Ω
±0.5°C
(±0.9°F) ±0.011°C/°C
(±0.011°F/°F) ±0.6°C
(±1.1°F) ±0.015°C/°C
(±0.015°F/°F)
500
Ω
±0.6°C
(±1.1°F) ±0.015°C/°C
(± 0.015°F/°F) ±0.4°C
(±0.7°F) ±0.012°C/°C
(±0.012°F/°F)
1000
Ω
±0.9°C
(±1.6°F) ±0.026°C/°C
(±0.026°F/°F) ±0.3°C
(±0.6°F) ±0.010°C/°C
(±0.010°F/°F)
Copper
(426)
(3) (4)
(4) Actual value at 0°C is 9.042 Ω per SAMA standard RC21-4-1966.
10
Ω
±0.5°C
(±0.9°F) ±0.008°C/°C
(±0.008°F/F) ±0.8°C
(±1.4°F) ±0.008°C/°C
(±0.008°F/°F)
Nickel
(618)
(3)(5)
(5) Actual value at 0°C is 100 Ω per DIN standard.
120
Ω
± 0.2°C
(±0.4°F) ±0.003°C/°C
(±0.003°F/°F) ±0.2°C
(±0.4°F) ±0.005°C/°C
(±0.005°F/°F)
Nickel
(672)
(3)
120
Ω
±0.2°C
(±0.4°F) ±0.003°C/°C
(±0.003°F/°F) ±0.2°C
(±0.4°F) ±0.005°C/°C
(±0.005°F/°F)
Nickel Iron
(518)
(3)
604
Ω
±0.3°C
(±0.5°F) ±0.008°C/°C
(±0.008°F/°F) ±0.3°C
(± 0.5°F) ±0.008°C/°C
(±0.008°F/°F)
Resistance
(3) 150
Ω
±0.2
Ω
±0.004
Ω
/°C
(±0.002
Ω
/°F)
±0.15
Ω
±0.003
Ω
/°C
(± 0.002
Ω
/°F)
500
Ω
±0.5
Ω
±0.012
Ω
/°C
(±0.007
Ω
/°F)
±0.5
Ω
±0.012
Ω
/°C
(±0.007
Ω
/°F)
1000
Ω
±1.0
Ω
±0.025
Ω
/°C
(±0.014
Ω
/°F)
±1.0
Ω
±0.025
Ω
/°C
(±0.014
Ω
/°F)
3000
Ω
±1.5
Ω
±0.040
Ω
/°C
(±0.023
Ω
/°F)
±1.2
Ω
±0.040
Ω
/°C
(±0.023
Ω
/°F)