National Instruments 9211 Manuale Utente

USER GUIDE AND SPECIFICATIONSUSB-9211/9211A4-Channel, 24-Bit Thermocouple Input DevicesThis user guide describes how to use the National Instruments U

USB-9211/9211A User Guide and Specifications 10 ni.comFigure 8. Input Circuitry for One ChannelIf thermocouples are connected to the USB-9211/9211A,

© National Instruments Corporation 11 USB-9211/9211A User Guide and SpecificationsMeasurement Accuracy for the Different Types of ThermocouplesFigures

USB-9211/9211A User Guide and Specifications 12 ni.comFigure 10. Type E and T ErrorsFigure 11. Type J and N Errors–200 0 200 400 600 800 10000234Max

© National Instruments Corporation 13 USB-9211/9211A User Guide and SpecificationsFigure 12. Type K ErrorsFigure 13. Type R and S ErrorsCold-Junctio

USB-9211/9211A User Guide and Specifications 14 ni.comMinimizing Thermal GradientsThermocouple wire can be a significant source of thermal gradients i

© National Instruments Corporation 15 USB-9211/9211A User Guide and SpecificationsCold-junction compensation sensor accuracy0 to 60 °C ...

USB-9211/9211A User Guide and Specifications 16 ni.comOffset error from source impedance ...0.05 µVtyp,0.07µVmax per Ω source impedance due to inp

© National Instruments Corporation 17 USB-9211/9211A User Guide and SpecificationsVoltagesConnect only voltages that are within these limits.Channel-t

USB-9211/9211A User Guide and Specifications 18 ni.comMaximum altitude...2,000 m (at 25 °C ambient temperature)Polluti

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USB-9211/9211A User Guide and Specifications 2 ni.comDimensionsFigure 2 shows the USB-9211/9211A device dimensions.Figure 2. USB-9211/9211A Series De

© National Instruments Corporation 3 USB-9211/9211A User Guide and SpecificationsSafety Guidelines for Hazardous VoltagesIf hazardous voltages are con

USB-9211/9211A User Guide and Specifications 4 ni.comRelated DocumentationIf your device uses NI-DAQmx Base, refer to ni.com to download the software.

© National Instruments Corporation 5 USB-9211/9211A User Guide and Specifications3. Align the I/O module with the carrier, as shown in Figure 3.Figure

USB-9211/9211A User Guide and Specifications 6 ni.comMounting the USB-9211/9211A to a PanelThreaded inserts are located in the USB-9211/9211A for moun

© National Instruments Corporation 7 USB-9211/9211A User Guide and SpecificationsWiring the USB-9211/9211AThe USB-9211/9211A has a 10-terminal, detach

USB-9211/9211A User Guide and Specifications 8 ni.comRefer to Table 3 for the terminal assignments for each channel.Assembling the High Voltage Screw

© National Instruments Corporation 9 USB-9211/9211A User Guide and SpecificationsFigure 7. High Voltage Screw Terminal BackshellUSB-9211/9211A Circui