Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 18)

18 MicroLogix 1200 Thermocouple/mV Input Module
Publication 1762-IN013B-EN-P - June 2013
(1) Rated working voltage is the maximum continuous voltage that can be applied at the input terminal, including the input
signal and the value that floats above ground potential (for example, 30V DC input signal and 20V DC potential above
ground).
(2) For proper operation, both the plus and minus input terminals must be within ±10V DC of analog common.
(3) Repeatability is the ability of the input module to register the same reading in successive measurements for the same input
signal.
(4) Open-circuit detection time is equal to channel update time, which is based on filter frequency, number of channels
enabled, and whether cyclic calibration in enabled.
(5) Maximum current input is limited due to input impedance.
Input Accuracy
Input Type (1)
(1) The module uses the National Institute of Standards and Technology (NIST) ITS-90 standard for thermocouple linearization.
Accuracy for 10 Hz, 50 Hz and 60 Hz
Filters
(2) (max.)
(2) Accuracy is dependent upon the analog/digital converter output rate selection, data format, and input noise. Refer to the
MicroLogix 1200 Thermocouple/mV Input Module User Manual, publication number
1762-UM002A for additional
information.
at 25 °C [77 °F]
Themocouples J (-210…1200 °C [-346…2192 °F]) ±0.6 °C [± 1.1 °F]
Themocouple N (-200…1300 °C [-328…2372 °F]) ±1 °C [± 1.8 °F]
Themocouple N (-210…-200 °C [-346…-328 °F]) ±1.2 °C [±2.2 °F]
Themocouple T (-230…400 °C [-382…752 °F]) ±1 °C [± 1.8 °F]
Themocouple T (-270…-230 °C [-454…-382 °F]) ±5.4 °C [± 9.7 °F]
Themocouple K (-230…1370 °C [-382…2498 °F]) ±1 °C [± 1.8 °F]
Themocouple K (-270…-230 °C [-454…-382 °F]) ±7.5 °C [± 13.5 °F]
Themocouple E (-210…1000 °C [-346…1832 °F]) ±0.5 °C [± 0.9 °F]
Themocouple E (-270…-210 °C [-454…-346 °F]) ±4.2 °C [± 7.6 °F]
Themocouples S and R ±1.7 °C [± 3.1 °F]
Thermocouple C ±1.8 °C [±3.2 °F]
Thermocouple B ±3.0 °C [±5.4 °F]
±50 mV ±15 μV
±100 mV ±20 μV