Advantech 4718 user manual Analog Input, Accuracy for Thermocouple

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Appendix A Specifications

A.1 Analog Input

Table A.1: Analog Input

Channels

8 differential

Input type

mV, V, and mA

Input range

J, K, T, E, R, S and B Thermocouple

 

Uni-polar 0~15mV, 0~50mV, 0~100mV,

 

0~500mV, 0~1V, 0~2.5V, 0~20mA,

 

4~20mA

Sampling rate

10 samples/s(total)

Accuracy

±0.1% or better (voltage and current input)

Zero drift

±0.3 uV / °C

 

 

Span drift

±25 ppm / °C

 

 

CMR @ 50/60 Hz

92 dB

 

 

Input impedance

1.8 M

A.2 Accuracy for Thermocouple:

Table A.2: Accuracy for Thermocouple

Input Range

Typical Accuracy

Maximum Error

J thermocouple 0 to 760 °C

±1.0 °C

±1.5 °C

 

 

 

K thermocouple 0 to 1370 °C

±1.0 °C

±1.5 °C

 

 

 

T thermocouple -100 to 400 °C

±1.0 °C

±1.5 °C

E thermocouple 0 to 1000 °C

±1.0 °C

±1.5 °C

R thermocouple 500 to 1750 °C

±1.2 °C

±2.5 °C

 

 

 

S thermocouple 500 to 1750 °C

±1.2 °C

±2.5 °C

 

 

 

B thermocouple 500 to 1800 °C

±2.0 °C

±3.0 °C

 

 

 

NOTE: Due to the location of the CJC sensor, the measurement will have a 1°C max. difference in channels.

USB-4718 User’s Manual

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Contents USB-4718 Channel Thermocouple Input ModuleCopyright Acknowledgements Product Warranty 2 years Technical Support and Assistance Safety Precaution Static ElectricityDocument Feedback Contents Appendix Function Block Appendix C Firmware Download Utility Introduction Features ApplicationsInstallation Guide Installation Flow Chart Programming Choices for DA&C Module Software OverviewDevice Drivers Programming Tools Device Driver Programming Roadmap\Program Files\Advantech\ADSAPI\Examples Troubleshooting Device Drivers Error Programming with Device Drivers Function LibraryPage Installation Unpacking After taking out the module, you should firstDriver Installation CD-ROMHardware Installation Driver InstallationDevice Manager Screen Device Setup & Configuration USB-4718 Device SpeedSetting Up the Device Configuring the DeviceDevice Setting Dialog Box Gain Code Setting Device Testing Testing Analog Input FunctionTesting Analog Output Function Analog Input Tab/Device Test DialogTesting Digital Output Function Testing Digital Input FunctionRed lamp High Green lamp Low Hardware Uninstallation Testing Counter Function11 Unplug or Eject Hardware Dialog Signal Connections Overview I/O ConnectorsPin Assignment I/O Connector Pin Assignment 2 I/O Connector Signal Description LED Indicator Status Description4 3.2.4 Jumper Setting Description JP1~JP8 Input Mode Setting for Analog Input ChannelsJP13 Watchdog Timer Setting How to Reset USB-4718 ManuallyAnalog Input Connections Isolated Digital Input ConnectionsIsolated Digital Output Connections Digital Input Channel ConnectionsField Wiring Considerations Isolated Digital Input Channel ConnectionsPage Specifications Analog Input Accuracy for ThermocoupleIsolated Digital Input Isolated Digital OutputGeneral Table A.5 GeneralFunction Block Appendix B Function Block Firmware Download Utility Appendix C Firmware Download Utility Figure C.2 USB Download Utility Figure C.4 Firmware Download Completed Analog Input Calibration Appendix D Analog Input Calibration Voltage Input CalibrationFigure D.1 USB-4718 Device Setting window Figure D.2 USB-4718 Calibration Wizard Figure D.4 Full range calibration Figure D.6 Select the current input range setting Current Input Calibration