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Overview
When and How to Calibrate
Your Module
Calibration Method
Tools and Equipment
Required to Calibrate
Your Thermocouple Module
39
Calibrate Your Module
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.
Task
When and How to Calibrate Your Module
Calibration Method
Tools and Equipment Required to Calibrate Your Thermocouple Module
Calibrate the Thermocouple Input Module
Input (mV) Calibration
Cold Junction Compensation Calibration
Tools and Equipment Required to Calibrate Your RTD Module
Calibrate the RTD Input 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.
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/.
To calibrate your thermocouple module, you need the following tools and
equipment.
Tool or Equipment
Precision Resistors
Precision Voltage Source
Description
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%
+100 mV, 1 mV resolution - accuracy +3 μV or better
Publication 1734-UM004F-EN-E - December 2012
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