Rockwell Automation SLC 500 Thermocouple, Selection Manual

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Publication 1747-SG001D-EN-P — January 2009
RTD Temperature Range and Accuracy Specifications
RTD Type
1746-NR4 1746-NR8
0.5 mA Excitation 2.0 mA Excitation 0.25 mA Excitation 1.0 mA Excitation
Temp. Range Acc.
✶
Temp. Range Acc.
✶
Temp. Range Acc.
✶
Temp. Range Acc.
✶
Platinum
(385)
100
Ω
-200…850 °C
-328…1562 °F
±1.0 °C
±2.0 °F
-200…850 °C
-328…1562 °F ±0.5 °C
±0.9 °F -200…850 °C
-328…1562 °F ±0.5 °C
±0.9 °F -200…850 °C
-328…1562 °F ±0.7 °C
±1.3 °F
200
Ω
-200…850 °C
-328…1562 °F
±1.0 °C
±2.0 °F
-200…850 °C
-328…1562 °F ±0.5 °C
±0.9 °F -200…850 °C
-328…1562 °F ±0.6 °C
±1.1 °F -200…850 °C
-328…1562 °F ±0.7 °C
±1.3 °F
500
Ω
-200…850 °C
-328…1562 °F ±0.6 °C
±1.1 °F -200…850 °C
-328…1562 °F ±0.5 °C
±0.9 °F -200…850 °C
-328…1562 °F ±0.7 °C
±1.3 °F -200…370 °C
-328…698 °F ±0.5 °C
±0.9 °F
1000
Ω
-200…850 °C
-328…1562 °F ±0.6 °C
±1.1 °F -200…240 °C
-328…464 °F ±0.5 °C
±0.9 °F -200…850 °C
-328…1562 °F ±1.2 °C
±2.2 °F -200…50 °C
-328…122 °F ±0.4 °C
±0.7 °F
Platinum
(3916)
100
Ω
-200…630 °C
-328…1166 °F
±1.0 °C
±2.0 °F
-200…630 °C
-328…1166 °F ±0.4 °C
±0.7 °F -200…630 °C
-328…1166 °F ±0.4 °C
±0.7 °F -200…630 °C
-328…1166 °F ±0.6 °C
±1.1 °F
200
Ω
-200…630 °C
-328…1166 °F
±1.0 °C
±2.0 °F
-200…630 °C
-328…1166 °F ±0.4 °C
±0.7 °F -200…630 °C
-328…1166 °F ±0.5 °C
±0.9 °F -200…630 °C
-328…1166 °F ±0.6 °C
±1.1 °F
500
Ω
-200…630 °C
-328…1166 °F ±0.5 °C
±0.9 °F -200…630 °C
-328…1166 °F ±0.4 °C
±0.7 °F -200…630 °C
-328…1166 °F ±0.6 °C
±1.1 °F -200…370 °C
-328…698 °F ±0.4 °C
±0.7 °F
1000
Ω
-200…630 °C
-328…1166 °F ±0.5 °C
±0.9 °F -200…230 °C
-328…446 °F ±0.4 °C
±0.7 °F -200…630 °C
-328…1166 °F ±0.9 °C
±1.6 °F -200…50 °C
-328…122 °F ±0.3 °C
±0.6 °F
Copper
(426)
10
Ω
Not Allowed
-100…260 °C
-148…500 °F ±0.6 °C
±1.1 °F -100…260 °C
-148…500 °F ±0.5 °C
±0.9 °F -100…260 °C
-148…500 °F ±0.8 °C
±1.4 °F
Nickel
(618)
120
Ω
-100…260 °C
-148…500 °F ±0.2 °C
±0.4 °F -100…260 °C
-148…500 °F ±0.2 °C
±0.4 °F -100…260 °C
-148…500 °F ±0.2 °C
±0.4 °F -100…260 °C
-148…500 °F ±0.2 °C
±0.4 °F
Nickel
(672)
120
Ω
-80…260 °C
-112…500 °F ±0.2 °C
±0.4 °F -80…260 °C
-112…500 °F ±0.2 °C
±0.4 °F -80…260 °C
-112…500 °F ±0.2 °C
±0.4 °F -80…260 °C
-112…500 °F ±0.2 °C
±0.4 °F
Nickel/Iron
(518)
604
Ω
-100…200 °C
-148…392 °F ±0.3 °C
±0.5 °F -100…200 °C
-148…392 °F ±0.3 °C
±0.5 °F -200…200 °C
-328…392 °F ±0.3 °C
±0.5 °F -200…170 °C
-328…338 °F ±0.3 °C
±0.5 °F
✶
The accuracy values assume that the module was calibrated within the specified temperature range of 0…60 °C (32…140 °F).
Module accuracy using 100
Ω
or 200
Ω
platinum RTDs with 0.5 excitation current depends on the following criteria:
(1) Module accuracy is ±0.6 °C after you apply power to the module or perform an autocalibration at 25 °C (77 °F) ambient with the module operating temperature at 25 °C (77 °F).
(2) Module accuracy is ±(0.6 °C + DT x 0.034 °C/°C) after you apply power to the module or perform an autocalibration at 25 °C (77 °F) ambient with the module operating temperature
between 0…60 °C (32…140 °F). DT is the temperature difference between the actual operating temperature of the module at 25 °C (77 °F) and 0.034 °C/°C is the temperature drift shown in
the table for 100
Ω
or 200
Ω
platinum RTDs.
(3) Module accuracy is ±1.0 °C after you apply power to the module or perform an autocalibration at 60 °C (140 °F) ambient with the module operating temperature at 60 °C (140 °F).
1746-NR4 Resistance Input Specifications
✶
The accuracy values assume that the module was calibrated within the specified temperature range of 0…60 °C (32…140 °F).
0.5 mA Excitation 2.0 mA Excitation
Resistance Resolution Repeatability
Resistance
Range
Accuracy
✶
Temperature
Drift Resistance
Range
Accuracy
✶
Temperature
Drift
150
Ω
0
Ω
…150
Ω
±0.2
Ω
±0.006
Ω
/°C
±0.003
Ω
/°F
0
Ω
…150
Ω
±0.15
Ω
±0.004
Ω
/°C
±0.002
Ω
/°F
0.01
Ω
±0.04
Ω
500
Ω
0
Ω
…500
Ω
±0.5
Ω
±0.014
Ω
/°C
±0.008
Ω
/°F
0
Ω
…500
Ω
±0.5
Ω
±0.014
Ω
/°C
±0.008
Ω
/°F
0.1
Ω
±0.2
Ω
1000
Ω
0
Ω
…1000
Ω
±1.0
Ω
±0.029
Ω
/°C
±0.016
Ω
/°F
0
Ω
…1000
Ω
±1.0
Ω
±0.029
Ω
/°C
±0.016
Ω
/°F
0.1
Ω
±0.2
Ω
3000
Ω
0
Ω
…3000
Ω
±1.5
Ω
±0.043
Ω
/°C
±0.024
Ω
/°F
0
Ω
…1900
Ω
±1.5
Ω
±0.043
Ω
/°C
±0.024
Ω
/°F
0.1
Ω
±0.2
Ω
1746-NR8 Resistance Input Specifications
✶
The accuracy values assume that the module was calibrated within the specified temperature range of 0…60 °C (32…140 °F).
0.5 mA Excitation 2.0 mA Excitation
Resistance Resolution Repeatability
Resistance
Range
Accuracy
✶
Temperature
Drift Resistance
Range
Accuracy
✶
Temperature
Drift
150
Ω
0
Ω
…150
Ω
±0.2
Ω
±0.004
Ω
/°C
±0.002
Ω
/°F
0
Ω
…150
Ω
±0.15
Ω
±0.003
Ω
/°C
±0.002
Ω
/°F
0.01
Ω
±0.04
Ω
500
Ω
0
Ω
…500
Ω
±0.5
Ω
±0.012
Ω
/°C
±0.007
Ω
/°F
0
Ω
…500
Ω
±0.5
Ω
±0.012
Ω
/°C
±0.007
Ω
/°F
0.1
Ω
±0.2
Ω
1000
Ω
0
Ω
…1000
Ω
±1.0
Ω
±0.025
Ω
/°C
±0.014
Ω
/°F
0
Ω
…1000
Ω
±1.0
Ω
±0.025
Ω
/°C
±0.014
Ω
/°F
0.1
Ω
±0.2
Ω
3000
Ω
0
Ω
…1200
Ω
±1.5
Ω
±0.040
Ω
/°C
±0.023
Ω
/°F
0
Ω
…1200
Ω
±1.2
Ω
±0.040
Ω
/°C
±0.023
Ω
/°F
0.1
Ω
±0.2
Ω
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