Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 79)

Publication 1762-UM002A-EN-P - July 2002
Specifications A-3
Repeatability at 25°C
(77°F)
(1) (2)
Specification Value
Module Error over Full
Temperature Range
(0 to +55°C [+32°F to
+131°F]) See “Accuracy” on page A-4.
CJC Accuracy ±1.3°C (±2.34°F)
Maximum Overload at Input
Terminals
±35V dc continuous
(1)
(1) Maximum current input is limited due to input impedance.
Input Group to Bus Isolation 720V dc for 1 minute (qualification test)
30V ac/30V dc working voltage
Input Channel Configuration via configuration software screen or the user program (by
writing a unique bit pattern into the module’s configuration
file).
Module OK LED On: module has power, has passed internal diagnostics, and is
communicating over the bus.
Off: Any of the above is not true.
Channel Diagnostics Over- or under-range and open-circuit by bit reporting
Vendor I.D. Code 1
Product Type Code 10
Product Code 64
(1) Repeatability is the ability of the input module to register the same reading in successive measurements for the
same input signal.
(2) Repeatability at any other temperature in the 0 to 60°C (32 to 140°F) range is the same as long as the
temperature is stable.
Input Type Repeatability for
10 Hz Filter
Thermocouple J ±0.1°C [±0.18°F]
Thermocouple N (-110°C to +1300°C [-166°F to +2372°F]) ±0.1°C [±0.18°F]
Thermocouple N (-210°C to -110°C [-346°F to -166°F]) ±0.25°C [±0.45°F]
Thermocouple T (-170°C to +400°C [-274°F to +752°F]) ±0 .1°C [±0.18°F]
Thermocouple T (-270°C to -170°C [-454°F to -274°F]) ±1.5°C [±2.7°F]
Thermocouple K (-270°C to +1370°C [-454°F to +2498°F]) ±0.1°C [±0.18°F]
Thermocouple K (-270°C to -170°C [-454°F to -274°F]) ±2.0°C [±3.6°F]
Thermocouple E (-220°C to +1000°C [-364°F to +1832°F]) ±0.1°C [±0.18°F]
Thermocouple E (-270°C to -220°C [-454°F to -364°F]) ±1.0°C [±1.8°F]
Thermocouples S and R ±0.4°C [±0.72°F]
Thermocouple C ±0.2°C [±0.36°F]
Thermocouple B ±0.7°C [±1.26°F]
±50 mV ±6
µ
V
±100 mV ±6
µ
V