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Table of Contents
Preface
About this User’s Guide ....................................................................................................................... 5
What you will learn from this user's guide ......................................................................................................... 5
Conventions in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1
Introducing the OM-USB-5203 ............................................................................................................. 6
Logging data with the OM-USB-5203 .............................................................................................................................. 6
Functional block diagram ................................................................................................................................... 7
Chapter 2
Installing the OM-USB-5203 ................................................................................................................. 8
Unpacking........................................................................................................................................................... 8
Installing the software ........................................................................................................................................ 8
Installing the hardware ....................................................................................................................................... 8
Configuring the hardware ................................................................................................................................... 8
Configuring data logging options...................................................................................................................................... 8
Chapter 3
Sensor Connections ............................................................................................................................. 9
Screw terminal pinout ......................................................................................................................................... 9
Sensor input terminals (C0H/C0L to C7H/C7L) ............................................................................................................... 9
CJC sensors ......................................................................................................................................................................10
Current excitation output terminals (±I1 to ±I4) ..............................................................................................................10
Four-wire, two sensor common terminals (4W01 to 4W67) ............................................................................................10
Two sensor common terminals (IC01 to IC67) ................................................................................................................10
Digital terminals (DIO0 to DIO7) ....................................................................................................................................10
Power output terminals (+5V)..........................................................................................................................................10
Ground terminals (GND) .................................................................................................................................................10
Thermocouple connections ............................................................................................................................... 11
Wiring configuration ........................................................................................................................................................11
RTD and thermistor connections ...................................................................................................................... 11
Two-wire configuration ...................................................................................................................................................12
Three-wire configuration .................................................................................................................................................13
Four-wire configuration ...................................................................................................................................................13
Semiconductor sensor measurements ............................................................................................................... 14
Wiring configuration ........................................................................................................................................................14
Digital I/O connections ..................................................................................................................................... 15
Configuring the DIO channels to generate alarms ...........................................................................................................15
Chapter 4
Functional Details ............................................................................................................................... 16
Thermocouple measurements ........................................................................................................................... 16
Cold junction compensation (CJC) ..................................................................................................................................16
Data linearization .............................................................................................................................................................16
Open-thermocouple detection (OTD) ..............................................................................................................................16
RTD and thermistor measurements .................................................................................................................. 17
Data linearization .............................................................................................................................................................17
External components ........................................................................................................................................ 17