Publication 1769-UM005A-EN-P
1-4
Overview
The tables below provide specifications for RTD accuracy and
temperature drift.
Table 1.2 RTD Accuracy and Temperature Drift
RTD Type
Maximum Scaled Accuracy
(25°C with Calibration)
Maximum Scaled Accuracy
(0 to 60°C with Calibration)
Maximum Temperature Drift
(from 25°C without
Calibration)
Copper 426
10
Ω
±0.6°C (1.08°F)
±1.1°C (1.98°F)
±0.032°C/°C (0.032°F/°F)
Nickel 618
120
Ω
±0.2°C (±0.36°F)
±0.4
°
C (±0.72°F)
±0.012°C/
°
C (±0.012°F/°F)
Nickel 672
120
Ω
±0.2°C (±0.36°F)
±0.4
°
C (±0.72°F)
±0.012°C/
°
C (±0.012°F/°F)
Nickel-Iron 518
604
Ω
±0.3°C (±0.54°F)
±0.5
°
C (±0.9°F)
±0.015°C/
°
C (±0.015°F/°F)
Platinum 385
100
Ω
±0.5°C (±0.9°F)
±0.9
°
C (±1.62°F)
±0.026°C/
°
C (±0.026°F/°F)
200
Ω
±0.5°C (±0.9°F)
±0.9
°
C (±1.62°F)
±0.026°C/
°
C (±0.026°F/°F)
500
Ω
±0.5°C (±0.9°F)
±0.9
°
C (±1.62°F)
±0.026°C/
°
C (±0.026°F/°F)
1000
Ω
±0.5°C (±0.9°F)
±0.9
°
C (±1.62°F)
±0.026°C/
°
C (±0.026°F/°F)
Platinum 3916
100
Ω
±0.4°C (±0.72°F)
±0.8
°
C (±1.44°F)
±0.023°C/
°
C (±0.023°F/°F)
200
Ω
±0.4°C (±0.72°F)
±0.8
°
C (±1.44°F)
±0.023°C/
°
C (±0.023°F/°F)
500
Ω
±0.4°C (±0.72°F)
±0.8
°
C (±1.44°F)
±0.023°C/
°
C (±0.023°F/°F)
1000
Ω
±0.4°C (±0.72°F)
±0.8
°
C (±1.44°F)
±0.023°C/
°
C (±0.023°F/°F)
IMPORTANT
When you are using any platinum (385) RTDs with
0.5 mA excitation current, the module’s accuracy is:
•
±0.5°C (0.9°F) after you apply power to the module or
perform an autocalibration at 25°C (77°F) ambient, with
module operating temperature at 25°C (77°F).
•
±[0.5°C (0.9°F) + DT ± 0.026 deg./°C (±0.026deg./°F)]
after you apply power to the module or perform an
autocalibration at 25°C (77°F) ambient, with module
operating temperature between 0 and 60°C (140°F). DT
is the temperature difference between the actual
module operating temperature and 25°C (77°F). The
value 0.026 deg./°C (±0.026deg./°F) is the temperature
drift shown in the table above.
•
±0.9°C after you apply power to the module or perform
an autocalibration at 60°C (140°F) ambient, with
module operating temperature at 60°C (140°F).
Содержание Compact 1769-IR6
Страница 1: ...Compact I O RTD resistance Input Module Catalog Number 1769 IR6 User Manual AB PLCs ...
Страница 10: ...Publication 1769 UM005A EN P P 4 ...
Страница 40: ...Publication 1769 UM005A EN P 3 16 Installation and Wiring ...
Страница 74: ...Publication 1769 UM005A EN P 4 34 Module Data Status and Channel Configuration ...
Страница 115: ...AB PLCs ...
Страница 116: ...Publication 1769 UM005A EN P February 2001 2001 Rockwell International Corporation Printed in the U S A ...