Rockwell Automation 1734-IT2I Thermocouple and RTD Input Module User Manual - Manual (Page 49)

39 Publication 1734-UM004F-EN-E - December 2012
Chapter
4
Calibrate Your Module
Overview Use this chapter to calibrate the thermocouple/mV module or the RTD input
module. Refer to the table for a summary of what is covered.
When and How to Calibrate
Your Module Your module is shipped to you already calibrated. If a calibration check is
required, the module must be in a POINT I/O system.
Perform module calibration periodically, based on your application. Module
calibration may also be required to remove module error due to aging of
components in your system.
Calibration Method Perform calibration through the I/O configuration software, such as
RSNetWorx and EDS files. If the EDS files are not in your software, get them
online at
www.ab.com/networks/eds/ .
Tools and Equipment
Required to Calibrate
Your Thermocouple Module To calibrate your thermocouple module, you need the following tools and
equipment.
Task Page
When and How to Calibrate Your Module 39
Calibration Method 39
Tools and Equipment Required to Calibrate Your Thermocouple Module 39
Calibrate the Thermocouple Input Module 40
Input (mV) Calibration 42
Cold Junction Compensation Calibration 45
Tools and Equipment Required to Calibrate Your RTD Module 48
Calibrate the RTD Input Module 48
Tool or Equipment Description
Precision Resistors High precision resistors:
1000
Ω
, 0.05%, 5 ppm/
o
C
3000
Ω
, 0.05%, 5 ppm/
o
C
or
Calibrated resistor Decade Box, 0.05%
Precision Voltage Source +100 mV, 1 mV resolution - accuracy +3
μ
V or better