Table of Contents
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Section 1.1
General
Description
Section 1.2
Input Types
and Ranges
User's Manual Pub. 0300242‐01 Rev. A
Chapter 1
Module Overview
This chapter describes the 1794sc-IRT8I Isolated Universal input module and explains
how the module reads current, voltage, RTD, resistance and thermocouple/millivolt
analog input data. Included is information about:
•
General description
•
Input types and ranges
•
Data Formats and filter frequencies
•
Hardware Features
•
System overview and module operation
•
Auto-calibration
The isolated RTD/Thermocouple module supports current, voltage, RTD, resistance,
thermocouple and millivolt type inputs. The module digitally converts and stores analog
data from any combination mentioned above. Each input channel is individually
configured via software for a specific input device, data format, filter frequency, and
provides open-circuit, over-range, under-range detection and indication.
The tables below list the input types and their associated ranges.
Input Type
B Type Thermocouple
C Type Thermocouple
E Type Thermocouple
J Type Thermocouple
K Type Thermocouple
N Type Thermocouple
R Type Thermocouple
S Type Thermocouple
T Type Thermocouple
100 Ω Pt α 0.385
200 Ω Pt α 0.385
500 Ω Pt α 0.385
1000 Ω Pt α 0.385
100 Ω Pt α 0.3916
200 Ω Pt α 0.3916
500 Ω Pt α 0.3916
1000 Ω Pt α 0.3916
10 Ω Cu α 0.426
100 Ω Ni α 0.618
Range
300 to 1820 ˚C
(572 to 3308 ˚F)
0 to 2315 ˚C
(32 to 4199 ˚F)
-270 to 1000 ˚C
(-454 to 1832 ˚F)
-210 to 1200 ˚C
(-346 to 2192 ˚F)
-270 to 1370 ˚C
(-454 to 2498 ˚F)
-210 to 1300 ˚C
(-346 to 2372 ˚F)
0 to 1768 ˚C
(32 to 3214 ˚F)
0 to 1768 ˚C
(32 to 3214 ˚F)
-270 to 400 ˚C
(-270 to 752 ˚F)
-200 to 850 ˚C
(-328 to 1562 ˚F)
-200 to 850 ˚C
(-328 to 1562 ˚F)
-200 to 850 ˚C
(-328 to 1562 ˚F)
-200 to 850 ˚C
(-328 to 1562 ˚F)
-200 to 630 ˚C
(-328 to 1166 ˚F)
-200 to 630 ˚C
(-328 to 1166 ˚F)
-200 to 630 ˚C
(-328 to 1166 ˚F)
-200 to 630 ˚C
(-328 to 1166 ˚F)
-100 to 260 ˚C
(-148 to 500 ˚F)
-100 to 260 ˚C
(-148 to 500 ˚F)
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