PXI-6238 National Instruments

Description

Product name：PXI-6238 National Instruments Power module
Product details:

The NI PXI-6238 is a versatile M Series multifunction I/O module designed for PXI systems, offering a robust solution for a wide range of test, measurement, control, and design applications, especially in environments with high voltages and electrical noise. Its key feature is bank isolation, which provides enhanced safety and improved measurement integrity by electrically isolating input/output channels from the system ground and from each other.

Product Details

The NI PXI-6238 is a multifunction Data Acquisition (DAQ) device. It integrates several types of I/O on a single module, making it a compact and efficient solution for various tasks. It is part of NI’s M Series, known for high-performance and reliable data acquisition.

Product Parameters

Here are the key specifications for the NI PXI-6238:

• Analog Input (AI):
  • Channels: 8 differential current inputs.
  • Resolution: 16 bits.
  • Maximum Sample Rate: 250 kS/s (kilosamples per second).
  • Input Range: ±20 mA.
  • Input Impedance (AI+ to AI-): 92 Ω ±10% in parallel with 100 pF.
  • Timing Accuracy: 50 ppm of sample rate.
  • FIFO Size: 4,095 samples.
• Analog Output (AO):
  • Channels: 2 current outputs.
  • Resolution: 16 bits.
  • Maximum Update Rate: 500 kS/s for 1 channel, 450 kS/s per channel for 2 channels.
  • FIFO Size: 8,191 samples.
• Digital Input (DI):
  • Channels: 6 (Port 0).
  • Input Voltage Range: 0 V to 30 V.
  • Logic “0” Level: 0 V to 4 V.
  • Logic “1” Level: 10 V to 30 V.
  • Compatible with: 24 V signals.
• Digital Output (DO):
  • Channels: 4 (Port 1).
  • Device Output Type: DO source.
  • Maximum Current: 100 mA per line (simultaneous usage), 350 mA for single line usage.
  • Compatible with: 24 V signals.
• Counters/Timers:
  • Number: 2 (32-bit).
  • Measurements: Edge counting, pulse, semi-period, period, two-edge separation, X1, X2, X4 quadrature encoding with Channel Z reloading; two-pulse encoding.
• Isolation: Bank isolation for analog I/O, digital input, and digital output channels.
• Form Factor: Standard 3U PXI module.
• Operating Temperature Range: 0°C to +55°C.

Product Advantages

The NI PXI-6238 offers several advantages for demanding applications:

• Bank Isolation: This is a significant advantage, providing electrical isolation between the I/O channels and the system, as well as between different banks of channels. This protects the system from high voltages and ground loops, and minimizes noise, leading to more accurate and reliable measurements in electrically noisy environments.
• Multifunctionality: Combining analog input, analog output, digital I/O, and counter/timer functionalities on a single module saves space and simplifies system architecture.
• High Performance: With a 16-bit resolution and sample rates up to 250 kS/s for analog input and 500 kS/s for analog output, it’s capable of handling high-speed data acquisition and control tasks.
• Current I/O Capability: Designed specifically for current I/O, it’s well-suited for applications involving current loops, such as those found in industrial automation and process control.
• PXI Platform Integration: As a PXI module, it benefits from the high-performance, ruggedness, and modularity of the PXI platform, allowing for easy expansion and integration into larger test and measurement systems.
• Software Compatibility: Fully compatible with NI-DAQmx driver software, it offers seamless integration with NI LabVIEW and other programming environments, simplifying development and deployment.
• Built-in Calibration: The module can auto-calibrate to correct for displacement and errors, and minimizes AI errors caused by time and temperature drift, ensuring high accuracy and stability without the need for external circuitry.

Precautions

When using the NI PXI-6238, consider the following:

• Environmental Conditions: Operate the module within the specified operating temperature range (0°C to +55°C) to ensure optimal performance and longevity.
• Power Supply: Ensure a stable and adequate power supply for the PXI chassis, as fluctuations can affect module performance.
• Interference: While designed for noisy environments, it’s still good practice to minimize potential sources of electromagnetic interference (EMI) to ensure the highest signal integrity.
• Cabling: Use shielded cables for analog and digital signals to reduce noise pickup and ensure accurate measurements, especially in industrial settings.
• Safety: Always adhere to safety guidelines for working with electrical systems and high voltages. The isolation feature provides protection, but proper handling and wiring are still crucial.
• Software Compatibility: Ensure you have the correct version of NI-DAQmx and your development environment (e.g., LabVIEW) installed for proper operation and programming.
• Application Criticality: NI products, including the PXI-6238, are generally not designed for use as critical components in life support systems or surgical implants where failure could lead to significant injury or death. For such applications, redundant systems and additional safety measures are essential.

Product Applications

The NI PXI-6238 is ideal for a variety of applications requiring precise current measurements and control, especially in challenging environments:

• Industrial Automation and Control:
  • Reading from sensors like encoders, flow meters, and proximity sensors in industrial processes.
  • Controlling actuators such as valves, pumps, and relays.
  • Monitoring and controlling process variables in manufacturing plants.
• Test and Measurement:
  • Automated test equipment (ATE) for component testing and validation.
  • Data logging and analysis in industrial settings.
  • System monitoring and diagnostics in high-voltage environments.
• Research and Development:
  • Prototyping and validating control systems.
  • Scientific experiments requiring isolated measurements.
• Condition Monitoring:
  • Monitoring current-based sensors for predictive maintenance applications.
  • Detecting anomalies and trends in machinery operation.

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Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
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