Rockwell Automation 1746-NR4 SLC 500 RTD/Resistance Input Module/ Instructions - Manual (Page 23)

SLC 500™ RTD/Resistance Input Module 23
Publication 1746-IN012B-EN-P - May 2001
IMPORTANT
Module accuracy, using 100
Ω
or 200
Ω
platinum RTDs with
0.5 mA excitation current, depends on the following criteria:
•
Module accuracy is ± 0.6°C after you apply power to the
module or perform an autocalibration at 25°C ambient with
module operating temperature at 25°C.
•
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 ambient with the module operating temperature
between 0° to 60°C.
– where DT is the temperature difference between the
actual operating temperature of the module and 25°C
and 0.034°C/°C is the temperature drift shown in the
table on page 22 for 100
Ω
or 200
Ω
platinum RTDs.
•
Module accuracy is ± 1.0°C after you apply power to the
module or perform an autocalibration at 60°C ambient with
module operating temperature at 60°C.