Note The guidelines in this document are specific to the NI-9220. The other components in the system might not meet the same safety ratings. Refer to the documentation for each component in the system to determine the safety and EMC ratings for the entire system.
Safety Guidelines for Hazardous Locations The NI-9220 is suitable for use in hazardous locations; , and hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI-9220 in a potentially explosive environment. Not following these guidelines may result in serious injury or death.
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Each NI-9220 is marked and is suitable for use in Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI-9220 in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Furthermore, any changes or modifications to the product not expressly approved by National Instruments could void your authority to operate it under your local regulatory rules. Special Conditions for Marine Applications Some products are approved for marine (shipboard) applications.
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI-9220 meets the following specifications. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C...
Negative analog input signal connection Common reference connection to isolated ground Table 1. Signal Descriptions Grounded Differential Connections Floating Differential Connections Single-Ended Connections NI-9220 Connection Guidelines Make sure that devices you connect to the NI-9220 are compatible with the module specifications. ni.com...
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 backshell kit to protect connections to the NI-9220 with spring terminal. Overvoltage Protection The NI-9220 provides overvoltage protection for each channel.
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