Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 79)

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 79
Module Data, Status, and Channel Configuration Chapter 4
Effects of Autocalibration
on Accuracy The module performs autocalibration to correct for drift errors over
temperature. Autocalibration occurs immediately following configuration of a
previously unselected channel, during power cycle of enable channels and
every 5 minutes if so configured. The table below shows module accuracy with
and without calibration.
Table 21 - Module Accuracy
Input Type
(1) (2) With Autocalibration Without Autocalibration
Maximum Error at
25
°C (77 °F)
Maximum Error at
60
°C (140 °F)
Temperature Drift (0…60 °C)
(32…140 °F)
100 Ω Platinum 385
± 0.5 °C (±0.9 °F) ± 0.9 °C (±1.62 °F) ± 0.026 °C/°C (±0.026 °F/°F)
200
Ω Platinum 385
± 0.5 °C (±0.9 °F) ± 0.9 °C (±1.62 °F) ± 0.026 °C/°C (±0.026 °F/°F)
500
Ω Platinum 385
± 0.5
°C (±0.9 °F)
± 0.9
°C (±1.62 °F)
± 0.026
°C/°C (±0.026 °F/°F)
1000
Ω Platinum 385
± 0.5
°C (±0.9 °F)
± 0.9
°C (±1.62 °F)
± 0.026
°C/°C (±0.026 °F/°F)
100
Ω Platinum 3916
± 0.4
°C (±0.72 °F)
± 0.8
°C (±1.44 °F)
± 0.023
°C/°C (±0.023 °F/°F)
200
Ω Platinum 3916
± 0.4
°C (±0.72 °F)
± 0.8
°C (±1.44 °F)
± 0.023
°C/°C (±0.023 °F/°F)
500
Ω Platinum 3916
± 0.4
°C (±0.72 °F)
± 0.8
°C (±1.44 °F)
± 0.023
°C/°C (±0.023 °F/°F)
1000
Ω Platinum 3916
± 0.4
°C (±0.72 °F)
± 0.8
°C (±1.44 °F)
± 0.023
°C/°C (±0.023 °F/°F)
10
Ω Copper 426
± 0.8
°C (±1.44 °F)
± 1.1
°C (±1.98 °F)
± 0.032
°C/°C (±0.032 °F/°F)
120
Ω Nickel 618
± 0.3
°C (±0.54 °F)
± 0.5
°C (±0.9 °F)
± 0.012
°C/°C (±0.012 °F/°F)
120
Ω Nickel 672
± 0.3
°C (±0.54 °F)
± 0.5
°C (±0.9 °F)
± 0.012
°C/°C (±0.012 °F/°F)
604 Ω Nickel-Iron 518
± 0.3 °C (±0.54 °F) ± 0.5 °C (±0.9 °F) ± 0.015 °C/°C (±0.015 °F/°F)
150 Ω
± 0.15 Ω ± 0.25 Ω ± 0.007 Ω/°C (±0.012 Ω/°F)
500 Ω
± 0.5 Ω ± 0.8 Ω ± 0.023 Ω/°C (±0.041 Ω/°F)
1000 Ω
± 1.0 Ω ± 1.5 Ω ± 0.043 Ω/°C (±0.077 Ω/°F)
3000 Ω
± 1.5 Ω ± 2.5 Ω ± 0.07 Ω/°C (±0.130 Ω/°F)
(1) The accuracy values apply to both current sources.
(2) Above ratings apply when a 50/60 Hz filter is used.