This document explains how to connect to the NI 9235. Before you begin, complete the software and Note hardware installation procedures in your chassis documentation. The guidelines in this document are specific to Note the NI 9235. The other components in the system might not meet the same safety ratings.
III, or IV. Safety Guidelines for Hazardous Locations The NI 9235 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 Gc and Ex nA IIC T4 Gc hazardous locations; and nonhazardous locations only.
II 3G 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 9235 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.
To minimize interference with radio and television reception and prevent unacceptable performance degradation, install and use this 6 | ni.com | NI 9235 Getting Started Guide...
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI 9235 meets the following specifications. Operating temperature -40 °C to 70 °C (IEC 60068-2-1, IEC 60068-2-2)
Excitation source connection Quarter-bridge completion connection NI 9235 Connection Guidelines • Make sure that devices you connect to the NI 9235 are compatible with the module specifications. • You must use 2-wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the NI 9235.
AI to RC directly at the terminals. High-Vibration Application Connections If your application is subject to high vibration, NI recommends that you use a backshell kit to protect connections to the NI 9235. Overvoltage Protection The NI 9235 provides overvoltage protection between any two terminals.
(EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration. 14 | ni.com | NI 9235 Getting Started Guide...
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For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, file on your media, or the National Instruments Patent Notice at patents.txt ni.com/ . You can find information about end-user license agreements (EULAs) and third-party patents legal notices in the readme file for your NI product.
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