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NI C Series Getting Started

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NI-9226
Getting Started
2024-01-16

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  • Page 1 NI-9226 Getting Started 2024-01-16...
  • Page 2 NI-9226 Getting Started........
  • Page 3 NI-9226 Getting Started NI-9226 Getting Started Connector Types The NI-9226 has more than one connector type: NI-9226 with spring terminal and NI-9226 with DSUB. Unless the connector type is specified, NI-9226 refers to all connector types. The NI-9226 with spring terminal is available in two types: push-in spring terminal and spring terminal.
  • Page 4 EX7+ RTD7+ RTD7- COM7 Table 1. Signal Descriptions Signal Description Common reference connection to isolated ground Positive sensor excitation connection No connection RTD+ Positive resistance temperature detector connection RTD- Negative resistance temperature detector connection NI-9226 with Spring Terminal Pinout ni.com...
  • Page 5 Connecting 3-Wire and 4-Wire RTDs You can connect any combination of 3-wire or 4-wire RTDs to the NI-9226. Each NI-9226 channel contains circuitry that automatically detects the type of RTD connected to the channel. The NI-9226 scans all eight input channels and automatically configures each channel for the appropriate mode.
  • Page 6 RTD– NI-9217 For the best measurement results when using the NI-9226 with a 3-wire RTD, use equal-length wires between the RTD+ terminal and the RTD and between the COM terminal and the RTD. Also, keep the lead resistance within 5% of the nominal RTD value.
  • Page 7 3. Remove the screwdriver from the activation slot to clamp the wire into place. High-Vibration Application Connections If your application is subject to high vibration, NI recommends that you use the NI-9940 backshell kit to protect connections to the NI-9226 with spring terminal.
  • Page 8 NI-9226 Getting Started Figure 2. NI-9940 Connector Backshell Installation 1. Install the NI-9940 backshell on the 36-pin spring-terminal connector. 2. Tighten the NI-9940 backshell screws to 0.45 N · m (4.0 lb · in) torque. ni.com © 2024 National Instruments Corporation.

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