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NI -9214 Getting Started

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NI-9214
Getting Started
2023-08-02

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Summary of Contents for NI NI-9214

  • Page 1 NI-9214 Getting Started 2023-08-02...
  • Page 2 NI-9214 Getting Started........
  • Page 3 NI-9214 Getting Started NI-9214 Getting Started NI-9214 Connection Guidelines Make sure that devices you connect to the NI-9214 are compatible with the ■ module specifications. The shield grounding methodology can vary depending on the application. ■ Refer to your thermocouple documentation or the thermocouple wire spool ■...
  • Page 4 NI-9214 Getting Started TB-9214 Pinout TC5+ TC0+ TC5- TC0- TC6+ TC1+ TC6- TC1- TC10+ TC7+ TC2+ TC13+ TC10- TC7- TC2- TC13- TC11+ TC8+ TC3+ TC14+ TC11- TC8- TC3- TC14- TC12+ TC9+ TC4+ TC15+ TC12- TC9- TC4- TC15- Table 1. Signal Descriptions...

  • Page 5: Input Impedance

    COM. If COM is left floating, the internal common-mode voltage of the input circuitry is the average of all the inputs. The NI-9214 measures the common-mode voltage level of each channel and returns a warning in the software if the signal is outside the common-mode voltage range.

  • Page 6: Thermocouple Measurement Accuracy

    NI-9214 Getting Started Shield Thermocouple Ground TB-9214 NI 9214 For most applications, you do not need to connect COM. Connecting to COM is not necessary for the following configurations: All thermocouples are floating ■ All thermocouples are referenced to the same common-mode voltage ■...
  • Page 7 Autozero Channel The NI-9214 has an internal autozero channel, which can be subtracted from each thermocouple reading to compensate for offset errors. Use of the autozero channel is optional, however the NI-9214 specifications assume that autozero is applied to every sample.

  • Page 8: What To Use

    NI-9214 Getting Started Wiring the TB-9214 What to Use TB-9214 ■ 0.05 mm to 0.5 mm (30 AWG to 20 AWG) wire with 5.1 mm (0.2 in.) of the ■ inner insulation stripped and 51 mm (2.0 in.) of the outer insulation stripped Zip tie ■...
  • Page 9 NI-9214 Getting Started 4. Replace the foam pad in the TB-9214 opening, reinstall the top cover, and tighten the captive screws. © National Instruments © 2023 National Instruments Corporation.

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