PXIe-4330

Земля NI PXIe-4330 is a high-accuracy, 8-channel simultaneous bridge input module part of the СЦ Экспресс family. Engineered specifically for strain, load, and pressure measurements, it combines high-resolution data acquisition with integrated signal conditioning in a single PXI Express slot. The PXIe-4330 is the industry-standard choice for engineers who prioritize absolute measurement accuracy and long-term stability in structural test cells and laboratory environments.

1. High-Resolution 24-Bit Delta-Sigma Architecture

The PXIe-4330 is built around a 24-битный дельта-сигма АЦП per channel, providing exceptional dynamic range and noise rejection. With a simultaneous sampling rate of up to 25,6 тыс. отсчетов/с на канал, it strikes an ideal balance between high-resolution static measurements and medium-speed dynamic analysis. The simultaneous sampling architecture eliminates inter-channel phase delays, which is paramount when correlating data across multiple strain gauge points on a single mechanical structure.

2. Integrated Bridge Completion and Excitation

To reduce system complexity and external “noise-coupling” wiring, the PXIe-4330 provides comprehensive onboard signal conditioning:

• Flexible Bridge Support: Native support for Full, Half, and Quarter-bridge (120 Ω, 350 Ω, and 1 kΩ) configurations.

• Программируемое возбуждение Independent, per-channel programmable voltage excitation ranging from 0,625 В до 10 В.

• Дистанционное зондирование: Actively compensates for voltage drops across long lead wires, ensuring the sensor receives the exact intended excitation for maximum measurement integrity.

3. Advanced Hardware-Based Calibration Features

Measurement reliability is guaranteed through several hardware-integrated verification tools:

• Калибровка внутреннего шунта: Each channel includes programmable shunt resistors, allowing engineers to perform gain verification and software scaling checks without physical load application.

• Поддержка TEDS (Transducer Electronic Data Sheet): The module automatically detects and configures sensors according to their TEDS digital records, minimizing manual entry errors and streamlining large-scale system deployments.

• Offset Nulling: Hardware-level zeroing of initial bridge offsets ensures the full dynamic range of the ADC is available for the actual test data.

4. Robust Filtering and Signal Integrity

Each channel features a digital anti-aliasing filter that automatically tracks the sampling rate. Combined with the high common-mode rejection ratio (CMRR) of the analog front-end, the PXIe-4330 excels at extracting clean micro-strain signals even in electrically harsh environments, such as those near high-power motors or industrial inverters.

5. PXI Express Scalability and NI-DAQmx Integration

The PXIe-4330 leverages the PXI Express backplane for sub-microsecond synchronization between multiple chassis and modules. Driven by the НИ-DAQmx framework, it allows for seamless integration into LabVIEW, Python, or C/C++. This ensures that as your project grows from 8 to 800 channels, the system remains synchronized and manageable with minimal software overhead.

6. Primary Application Domains

The PXIe-4330 is optimized for high-fidelity mechanical and structural validation:

• Structural Integrity Testing: Monitoring strain and fatigue in airframes, bridges, and wind turbines.

• Load and Torque Monitoring: High-precision weighing and torque analysis in automotive and industrial test stands.

• Material Research: Accurate stress-strain characterization in specialized tensile testing.

• Pressure Transducer Interfacing: High-stability monitoring of oil, gas, and hydraulic systems.

Резюме

Земля NI PXIe-4330 is a robust, high-precision solution designed for engineers who require reliable, “set-and-forget” bridge measurements. By integrating 24-bit precision, flexible bridge completion, and advanced calibration tools into the PXIe platform, it offers unparalleled data quality. Contact our technical team today for professional техническая поддержка и конкурентным ценообразование проекта to ensure your next measurement campaign is a success.