Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 11)

1 Publication 1762-UM002A-EN-P - July 2002
Chapter
1
Overview
This chapter describes the 1762-IT4 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
•
system and module operation
•
calibration
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 four 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 to +1200°C -346 to +2192°F
K -270 to +1370°C -454 to +2498°F
T -270 to +400°C -454 to +752°F
E -270 to +1000°C -454 to +1832°F
R 0 to +1768°C +32 to +3214°F
S 0 to +1768°C +32 to +3214°F
B +300 to +1820°C +572 to +3308°F
N -210 to +1300°C -346 to +2372°F
C 0 to +2315°C +32 to + 4199°F