National Instruments 9211 - Manuals

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Manual National Instruments 9211

Summary

Page 2 - Note

USB-9211/9211A User Guide and Specifications 2 ni.com Dimensions Figure 2 shows the USB-9211/9211A device dimensions. Figure 2. USB-9211/9211A Series Devices in Inches (Millimeters) Safety Guidelines Operate the USB-9211/9211A only as described in these operating instructions. Note Although the NI 9...

Page 3 - Safety Guidelines for Hazardous Voltages; hazardous voltages; Caution; Software; Device

© National Instruments Corporation 3 USB-9211/9211A User Guide and Specifications Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the module, take the following precautions. A hazardous voltage is a voltage greater than 42.4 V pk or 60 VDC to earth ground. Caution Ens...

Page 5 - Squeeze the latches and insert the NI 9211 module into the carrier.

© National Instruments Corporation 5 USB-9211/9211A User Guide and Specifications 3. Align the I/O module with the carrier, as shown in Figure 3. Figure 3. Module Installation 4. Squeeze the latches and insert the NI 9211 module into the carrier. 5. Press firmly on the connector side of the NI 9211 ...

Page 6 - LED Indicator; The LED indicator indicates device status.; LED State; Not lit

USB-9211/9211A User Guide and Specifications 6 ni.com Mounting the USB-9211/9211A to a Panel Threaded inserts are located in the USB-9211/9211A for mounting it to a panel. Refer to Figure 5 for dimensions. Figure 5. Module Dimensions Connecting the USB-9211/9211A to a Computer Plug one end of the US...

Page 8 - Refer to Table 3 for the terminal assignments for each channel.; Assembling the High Voltage Screw Terminal Backshell; completing the following steps:; Module; No connection

USB-9211/9211A User Guide and Specifications 8 ni.com Refer to Table 3 for the terminal assignments for each channel. Assembling the High Voltage Screw Terminal Backshell The high voltage screw terminal backshell must be installed when using hazardous voltages (>42.4 V pk , 60 VDC). Refer to Figu...

Page 9 - and COM terminals and between the TC– and COM; Effects of Source Impedance on Voltage Measurement Accuracy

© National Instruments Corporation 9 USB-9211/9211A User Guide and Specifications Figure 7. High Voltage Screw Terminal Backshell USB-9211/9211A Circuitry The USB-9211/9211A channels share a common ground that is isolated from the chassis and the host computer. Each channel has an impedance between ...

Page 10 - Specifications; Using the Autozero Channel; Start»All Programs»National

USB-9211/9211A User Guide and Specifications 10 ni.com Figure 8. Input Circuitry for One Channel If thermocouples are connected to the USB-9211/9211A, the gain and offset errors resulting from the source impedance of the thermocouples are negligible for most applications. Other voltage sources with ...

Page 11 - not

© National Instruments Corporation 11 USB-9211/9211A User Guide and Specifications Measurement Accuracy for the Different Types of Thermocouples Figures 9, 10, 11, 12, and 13 show the typical and maximum errors for the different thermocouple types when used with the USB-9211/9211A over the full temp...

Page 13 - Cold-Junction Temperature Measurement Accuracy

© National Instruments Corporation 13 USB-9211/9211A User Guide and Specifications Figure 12. Type K Errors Figure 13. Type R and S Errors Cold-Junction Temperature Measurement Accuracy Heat from other nearby heat sources can cause errors in thermocouple measurements by heating up the terminals so t...

Page 14 - Minimizing Thermal Gradients; Avoid running thermocouple wires near hot or cold objects.; Input Characteristics; Input range

USB-9211/9211A User Guide and Specifications 14 ni.com Minimizing Thermal Gradients Thermocouple wire can be a significant source of thermal gradients if it conducts heat or cold directly to terminal junctions. To minimize these errors, follow these guidelines: • Use small-gauge thermocouple wire. S...

Page 16 - V max per; Power Requirements; USB specification; Physical Characteristics; If you need to clean the module, wipe it with a dry towel.; Safety

USB-9211/9211A User Guide and Specifications 16 ni.com Offset error from source impedance .......0.05 µ V typ, 0.07 µ V max per Ω source impedance due to input current Power Requirements Current consumption from USB .............500 mA, max Suspend mode..................................2.5 mA, max B...

Page 17 - Voltages; Hazardous Locations; Environmental

© National Instruments Corporation 17 USB-9211/9211A User Guide and Specifications Voltages Connect only voltages that are within these limits. Channel-to-COM ................................... ± 30 V max, Measurement Category I Measurement Category I is for measurements performed on circuits not d...

Page 18 - Electromagnetic Compatibility; FCC Part 15A above 1 GHz; CE Compliance; Calibration

USB-9211/9211A User Guide and Specifications 18 ni.com Maximum altitude...................................2,000 m (at 25 °C ambient temperature) Pollution Degree (IEC 60664) ................2 Electromagnetic Compatibility Emissions ................................................EN 55011 Class A at ...

Page 19 - Where to Go for Support; you have access to everything from

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