The National Instruments USB-9237 (Part Number: 780137-01) is a high-performance, 4-channel, 24-bit analog input device specifically engineered for strain and bridge-based measurements. Designed for portability and reliability, this module seamlessly integrates with bus-powered USB carriers, facilitating easy connection to laptops and other systems. Ideal for high-speed fracture testing as well as fatigue and static load testing, the USB-9237 supports simultaneous acquisition on all four channels at a maximum sampling rate of 50 kS/s per channel, accommodating full, half, and quarter-bridge measurements, with additional accessories required for quarter-bridge configurations.

This device provides programmable excitation voltages ranging from 2.5 to 10 V, delivering up to 150 mW of power, while also supporting external excitation sources for applications requiring higher power. Connectivity is made easy through RJ50 connectors, and optional screw-terminal adapters enable quick customization for sensor integration. The USB-9237's enhanced TEDS compatibility streamlines sensor configuration, while its robust protection features include ±30 V overvoltage and 60 VDC isolation between channels and earth ground, ensuring stable operation in variable environmental conditions.

Utilizing delta-sigma ADC technology, the USB-9237 is precalibrated to deliver high resolution and accuracy, making it suitable for harsh industrial environments. It comes complete with the NI-DAQmx driver for efficient configuration, data logging, and signal processing, and is compatible with programming environments such as LabVIEW, ANSI C, and Visual Basic.NET. Additionally, it includes LabVIEW SignalExpress LE for immediate out-of-the-box data acquisition and analysis. Whether for research, testing, or production use, the USB-9237 combines unparalleled performance, flexibility, and ease of use, making it an essential tool for engineers and researchers engaged in accurate and reliable bridge-based measurements.