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Summary of Contents for National Instruments NI-9238
- Page 1 GETTING STARTED GUIDE NI 9238 4 AI, ±500 mV, 24 Bit, 50 kS/s/ch Simultaneous...
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Page 2: Safety Guidelines
This document explains how to connect to the NI 9238. 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 9238. The other components in the system might not meet the same safety ratings. -
Page 3: Safety Voltages
250 Vrms, Measurement Category II Withstand 1,500 Vrms, verified by a 5 s dielectric test 2,001 m to 5,000 m altitude Continuous 60 VDC, Measurement Category I Withstand 1,000 VDC NI 9238 Getting Started Guide | © National Instruments | 3... - Page 4 Channel-to-earth ground isolation Up to 2,000 m altitude Continuous 250 Vrms, Measurement Category II Withstand 3,000 Vrms, verified by a 5 s dielectric test 2,001 m to 5,000 m altitude Continuous 60 VDC, Measurement Category I Withstand 1,000 VDC Division 2 and Zone 2 60 VDC, Measurement hazardous locations Category I...
- Page 5 Measurement Categories CAT I and CAT O are Note equivalent. These test and measurement circuits are not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV. NI 9238 Getting Started Guide | © National Instruments | 5...
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Page 6: Safety Guidelines For Hazardous Voltages
Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the device, take the following precautions. A hazardous voltage is a voltage greater than 42.4 Vpk voltage or 60 VDC to earth ground. Ensure that hazardous voltage wiring is Caution performed only by qualified personnel adhering to local electrical standards. -
Page 7: Safety Guidelines For Hazardous Locations
Class I, Division 2. For Division 2 and Zone 2 applications, Caution install the system in an enclosure rated to at least IP54 as defined by IEC/EN 60079-15. NI 9238 Getting Started Guide | © National Instruments | 7... -
Page 8: Special Conditions For Hazardous Locations Use In Europe And Internationally
For Division 2 and Zone 2 applications, Caution connected voltage sources must be within 60 VDC to earth ground. For Division 2 and Zone 2 applications, Caution install a protection device between the input signal and the NI 9238 input terminal. The device must clamp all voltage sources to no more than 40% above their rated value or within 84 VDC to earth ground if there is a transient overvoltage condition. -
Page 9: Electromagnetic Compatibility Guidelines
This product is intended for use in industrial locations. However, harmful interference may occur in some installations, when the product is connected to a peripheral device or test object, or if the NI 9238 Getting Started Guide | © National Instruments | 9... - Page 10 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. To ensure the specified EMC performance,...
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Page 11: Cable Requirements For Emc Compliance
782802-01) on the input cable for each channel connected to the NI 9238. • Position the ferrite as close to the module as possible. Placing the ferrite elsewhere decreases its effectiveness. NI 9238 Getting Started Guide | © National Instruments | 11... -
Page 12: Related Information
Figure 1. NI 9238 Cable Connections for EMC Compliance Shield AI0+ Signal Source AI0– Shield AI1+ Signal Source AI1– Shield AI2+ Signal Source AI2– Shield AI3+ Signal Source AI3– NI 9238 Related Information NI 9238 Connection Guidelines on page 17 12 | ni.com | NI 9238 Getting Started Guide... -
Page 13: Special Conditions For Marine Applications
In addition, take precautions when designing, selecting, and installing measurement probes and cables to ensure that the desired EMC performance is attained. NI 9238 Getting Started Guide | © National Instruments | 13... -
Page 14: Preparing The Environment
Preparing the Environment Ensure that the environment in which you are using the NI 9238 meets the following specifications. Operating temperature -40 °C to 70 °C (IEC 60068-2-1, IEC 60068-2-2) Operating humidity 10% RH to 90% RH, (IEC 60068-2-78) noncondensing Pollution Degree Maximum altitude 5,000 m... - Page 15 NI 9238 Pinout AI0+ AI0– AI1+ AI1– AI2+ AI2– AI3+ AI3– NI 9238 Getting Started Guide | © National Instruments | 15...
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Page 16: Grounded Connections
Table 1. Signal Descriptions Signal Description Positive analog input signal connection Negative analog input signal connection Grounded Connections Signal Source – AI– NI 9238 Make sure the voltage on the AI+ and AI- connections are in the channel-to-earth safety voltage range to ensure proper operation. 16 | ni.com | NI 9238 Getting Started Guide... -
Page 17: Floating Connections
You must use 2-wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the NI 9238. Related Information Cable Requirements for EMC Compliance on page 11 NI 9238 Getting Started Guide | © National Instruments | 17... -
Page 18: High-Vibration Application Connections
High-Vibration Application Connections If your application is subject to high vibration, NI recommends that you follow these guidelines to protect connections to the NI 9238: • Use ferrules to terminate wires to the detachable connector. • Use the NI 9971 backshell kit. Overvoltage Protection The NI 9238 provides overvoltage protection for each channel. -
Page 19: Where To Go Next
NI 9238 Datasheet NI-RIO Help NI-DAQmx Help LabVIEW FPGA Help LabVIEW Help RELATED INFORMATION C Series Documentation Services & Resources ni.com/services ni.com/info cseriesdoc Located at ni.com/manuals Installs with the software NI 9238 Getting Started Guide | © National Instruments | 19... -
Page 20: Worldwide Support And Services
Worldwide Support and Services The NI website is your complete resource for technical support. At ni.com/support, you have access to everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers. Visit ni.com/services for NI Factory Installation Services, repairs, extended warranty, and other services. - Page 21 United States, visit the Worldwide Offices section of ni.com/niglobal to access the branch office websites, which provide up-to-date contact information, support phone numbers, email addresses, and current events. NI 9238 Getting Started Guide | © National Instruments | 21...
- Page 22 U.S. Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015. © 2014—2016 National Instruments. All rights reserved. 376138B-01 Feb16...
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