- IEEE 802.11b/g (Wi-Fi) wireless and Ethernet communications interfaces
- Programmable half- and full-bridge completion
- Quarter-bridge completion with external accessory (sold separately)
- Up to 10 V internal excitation
- Advanced security with 128-bit AES data encryption and IEEE 802.11i (WPA2) support
- Includes NI-DAQmx measurement services software and LabVIEW SignalExpress LE
 Data Sheet |
Configure System 
The NI WLS-9237 Wi-Fi data acquisition (DAQ) device includes four channels of analog input with built-in signal conditioning for strain gages, pressure transducers, load cells, and other bridge-based measurements. You can synchronize the WLS-9237 with other devices by using two onboard individually programmable digital trigger lines to export or import sample clocks, start triggers, pause triggers, and reference triggers. In addition, channel-to-earth isolation and calibration traceable to National Institute of Standards and Technology (NIST) standards deliver safety and accuracy for high-quality sensor measurements.
The standard RJ50 connectors on the WLS-9237 are used for mass termination. Crimping an RJ50 connector onto a sensor, which is similar to crimping a standard network cable, provides for quick connection of the sensor to the module.
For screw terminals without the quarter-bridge completion, purchase the NI 9949 RJ50 to screw terminal accessory and a kit of RJ50 cables (quantity of 4). This setup exposes all 10 pins for each channel as screw terminals. The NI 9944 and NI 9945 are accessories for use with quarter-bridge sensors. These accessories have a female RJ50 connector on one end and screw terminals on the other end. Purchase these accessories with a kit of RJ50 cables (quantity 4).
NI Wi-Fi Data Acquisition
NI Wi-Fi data acquisition (DAQ) devices combine IEEE 802.11g wireless or Ethernet communication; direct sensor connectivity; and the flexibility of NI LabVIEW software for remote monitoring of electrical, physical, mechanical, and acoustical signals. With built-in signal conditioning and the highest commercially available network security, NI Wi-Fi DAQ devices stream data in real time for easy-to-use, high-performance remote measurements.
NI-DAQmx Measurement Services Software
NI-DAQmx driver and measurement services software provides easy-to-use configuration and programming interfaces with features such as the DAQ Assistant and automatic code generation to help reduce development time. Every Wi-Fi DAQ device also includes a copy of LabVIEW SignalExpress LE software so you can quickly acquire, analyze, and present data without programming.
Application Software
In addition to LabVIEW SignalExpress, Wi-Fi DAQ devices are compatible with the following versions (or later) of NI application software: LabVIEW 7.1, LabWindows™/CVI 7.x, and Measurement Studio 7.x. Wi-Fi DAQ devices are also compatible with ANSI C/C++, C#, Visual Basic .NET, and Visual Basic 6.0.
The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
Additional Product Information
Related Information
Specifications Documents
Specifications Summary
| General | |
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| Form Factor | Ethernet, Wireless |
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| OS Support | Windows |
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| Measurement Type | Bridge-based sensor, Strain gauge |
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| LabVIEW RT Support | Yes |
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| Isolation Type | Ch-Earth Ground Isolation |
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| Analog Input | |
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| Number of Channels | 4 DI |
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| Sample Rate | 50 kS/s/ch |
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| Resolution | 24 bits |
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| Simultaneous Sampling | Yes |
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| Maximum Voltage Range | -25..25 mV_V |
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| Range Accuracy | .1125 mV/V |
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| Minimum Voltage Range | -25..25 mV_V |
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| Range Accuracy | .1125 mV/V |
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| Number of Ranges | 1 |
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| On-Board Memory | 4095 samples |
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| Signal Conditioning | Anti-aliasing filter, Bridge completion, Voltage excitation |
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| Analog Output | |
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| Number of Channels | 0 |
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| Digital I/O | |
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| Number of Channels | 0 |
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| Counter/Timers | |
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| Number of Counter/Timers | 0 |
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| Timing/Triggering/Synchronization | |
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| Synchronization Bus (RTSI) | No |
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| Triggering | Digital |
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| Physical Specifications | |
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| Length | 21.4 cm |
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| Width | 9.5 cm |
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| Height | 10.2 cm |
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| I/O Connector | RJ50 |
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Extended Warranties
National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:
- Significant cost savings compared to individual repair incidents
- Fault location, diagnostics, and repair by NI any time the system product fails
- All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications
For more information about your warranty options:
Calibration
NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.
Training
NI training is the fastest, most certain route to productivity with NI tools and successful application development.
Repair Services
Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.
Technical Support
ni.com/support
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