Rockwell Automation 1746-NR8 SLC 500 RTD/Resistance Input Module User Manual - Manual (Page 103)

Publication 1746-UM003A-EN-P
Specifications A-3
Module Accuracy
RTD Temperature Ranges, Resolution, and Repeatability
Input Type Temp. Range
(0.25 mA Excitation)
(4)
(4) The temperature range for the 1000 Ω RTD is dependent on the excitation current.
Temp. Range
(1.0 mA Excitation)
(4)
Resolution Repeatability
(28 Hz, 50/60 Hz)
Platinum (385)
(1)
(1) The 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 ohms/ohm ·°C or simply 0.00385 /°C.
100
Ω
-200°C to +850°C
(-328°F to +1562°F) -200°C to +850°C
(-328°F to +1562°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
200
Ω
-200°C to +850°C
(-328°F to +1562°F) -200°C to +850°C
(-328°F to +1562°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
500
Ω
-200°C to +850°C
(-328°F to +1562°F) -200°C to +390°C
(-328°F to +698°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
1000
Ω
-200°C to +850°C
(-328°F to +1562°F) -200°C to +50°C
(-328°F to +122°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
Platinum (3916)
(1)
Ω
-200°C to +630°C
(-328°F to +1166°F) -200°C to +630°C
(-328°F to +1166°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
200
Ω
-200°C to +630°C
(-328°F to +1166°F) -200°C to +630°C
(-328°F to +1166°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
500
Ω
-200°C to +630°C
(-328°F to +1166°F) -200°C to +380°C
(-328°F to +698°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
1000
Ω
-200°C to +630°C
(-328°F to +1166°F) -200°C to +50°C
(-328°F to +122°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
Copper (426)
(1)(2)
(2) Actual value at 0°C is 9.042
Ω
per SAMA standard RC21-4-1966.
10
Ω
-100°C to +260°C
(-328°F to +500°F) -100°C to +260°C
(-328°F to +500°F) 0.1°C
(0.1°F) ± 0.2°C
(± 0.4°F)
Nickel (618) (1)(3)
(3) Actual value at 0°C is 100
Ω
per DIN standard.
120
Ω
-100°C to +260°C
(-328°F to +500°F) -100°C to +260°C
(-328°F to +500°F) 0.1°C
(0.1°F) ± 0.1°C
(± 0.2°F)
Nickel (672)
(1) 120
Ω
-80°C to +260°C
(-328°F to +500°F) -80°C to +260°C
(-328°F to +500°F) 0.1°C
(0.1°F) ± 0.1°C
(± 0.2°F)
Nickel Iron (518)
(1) 604
Ω
-200°C to +200°C
(-328°F to +392°F) -200°C to +180°C
(-328°F to +338°F) 0.1°C
(0.1°F) ± 0.1°C
(± 0.2°F)
IMPORTANT
The exact signal range valid for each input type is
dependent upon the excitation current magnitude that you
select when configuring the module. For details on
excitation current, refer to page A-2.