Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 80)

Publication 1762-UM002A-EN-P - July 2002
A-4 Specifications
Accuracy
Input Type
(1)
With Autocalibration Enabled Without Autocalibration
Accuracy
(2) (3)
for 10 Hz, 50 Hz and 60
Hz Filters (max.)
Maximum Temperature Drift
(2) (4)
at 25°C [77°F]
Ambient at 0 to 60°C
[32 to 140°F]
Ambient at 0 to 60°C [32 to 140°F]
Ambient
Thermocouple J (-210°C to 1200°C [-346°F to 2192°F]) ±0.6°C [± 1.1°F] ±0.9°C [± 1.7°F] ±0.0218°C/°C [±0.0218°F/°F]
Thermocouple N (-200°C to +1300°C [-328°F to 2372°F]) ±1°C [± 1.8°F] ±1.5°C [±2.7°F] ±0.0367°C/°C [±0.0367°F/°F]
Thermocouple N (-210°C to -200°C [-346°F to -328°F]) ±1.2°C [±2.2°F] ±1.8°C [±3.3°F] ±0.0424°C/°C [±0.0424°F/°F]
Thermocouple T (-230°C to +400°C [-382°F to +752°F]) ±1°C [± 1.8°F] ±1.5°C [±2.7°F] ±0.0349°C/°C [±0.0349°F/°F]
Thermocouple T (-270°C to -230°C [-454°F to -382°F]) ±5.4°C [± 9.8°F] ±7.0°C [±12.6°F] ±0.3500°C/°C [±0.3500°F/°F]
Thermocouple K (-230°C to +1370°C [-382°F to
+2498°F]) ±1°C [± 1.8°F] ±1.5°C [±2.7°F] ±0.4995°C/°C [±0.4995°F/°F]
Thermocouple K (-270°C to -225°C [-454°F to -373°F]) ±7.5°C [± 13.5°F] ±10°C [± 18°F] ±0.0378°C/°C [±0.0378°F/°F]
Thermocouple E (-210°C to +1000°C [-346°F to
+1832°F]) ±0.5°C [± 0.9°F] ±0.8°C [±1.5°F] ±0.0199°C/°C [±0.0199°F/°F]
Thermocouple E (-270°C to -210°C [-454°F to -346°F]) ±4.2°C [± 7.6°F] ±6.3°C [±11.4°F] ±0.2698°C/°C [±0.2698°F/°F]
Thermocouple R ±1.7°C [± 3.1°F] ±2.6°C [± 4.7°F] ±0.0613°C/°C [±0.0613°F/°F]
Thermocouple S ±1.7°C [± 3.1°F] ±2.6°C [± 4.7°F] ±0.0600°C/°C [±0.0600°F/°F]
Thermocouple C ±1.8°C [±3.3°F] ±3.5°C [±6.3°F] ±0.0899°C/°C [±0.0899°F/°F]
Thermocouple B ±3.0°C [±5.4°F] ±4.5°C [±8.1°F] ±0.1009°C/°C [±0.1009°F/°F]
±50 mV ±15
µ
V ±25
µ
V ±0.44
µ
V/°C [±0.80
µ
V/°F]
±100 mV ±20
µ
V ±30
µ
V ±0.69
µ
V/°C [±01.25
µ
V/°F]
(1) The module uses the National Institute of Standards and Technology (NIST) ITS-90 standard for thermocouple linearization.
(2) Accuracy and temperature drift information does not include the affects of errors or drift in the cold junction compensation circuit.
(3) Accuracy is dependent upon the analog/digital converter output rate selection, data format, and input noise.
(4) Temperature drift with autocalibration is slightly better than without autocalibration.
TIP
For more detailed accuracy information, see the
accuracy graphs on pages A-5 through A-21.