Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module - Manual (Page 11)

Rockwell Automation Publication 1769-UM004B-EN-P - March 2010 11
Chapter
1
Overview
This chapter describes the 1769-IT6 Thermocouple/mV Input Module and
explains how the module reads thermocouple or millivolt analog input data.
Included is information about:
• the module’s hardware and diagnostic features.
• an overview of system and module operation.
• compatibility.
General Description The thermocouple/mV input module supports thermocouple and millivolt signal
measurement. It digitally converts and stores thermocouple and/or millivolt
analog data from any combination of up to six thermocouple or millivolt analog
sensors. Each input channel is individually configurable via software for a specific
input device, data format and filter frequency, and provides open-circuit,
over-range and under-range detection and indication.
Thermocouple/mV Inputs and Ranges
The table below defines thermocouple types and their associated full-scale
temperature ranges. The second table lists the millivolt analog input signal ranges
that each channel will support. To determine the practical temperature range your
thermocouple supports, see the specifications in
Appendix A .
Thermocouple
Type °C Temperature Range °F Temperature Range
J -210…1200 °C -346…2192 °F
K -270…1370 °C -454…2498 °F
T -270…400 °C -454…752 °F
E -270…1000 °C -454…1832 °F
R 0…1768 °C 32…3214 °F
S 0…1768 °C 32…3214 °F
B 300…1820 °C 572…3308 °F
N -210…1300 °C -346…2372 °F
C 0…2315 °C 32…4199 °F
CJC Sensor 0…85 °C 32…185 °F
Millivolt Input Type Range
± 50 mV -50…50 mV
± 100 mV -100…100 mV