SCXI-1102 National Instruments High-performance analog input module

Description

SCXI-1102 National Instruments High-performance analog input module

Product Dimensions：

Product Description

The NI SCXI-1102 is a 32-channel, high-performance analog input module designed for the SCXI (Signal Conditioning eXtensions for Instrumentation) platform. It is a critical component for conditioning and amplifying low-level signals from sensors before they are digitized by a DAQ device. The SCXI-1102 is particularly well-suited for measuring a variety of signals, including those from thermocouples, as well as millivolt, volt, and current sources.

Product Specifications

• Channels: 32 (single-ended)
• Signal Types: Thermocouple, millivolt, volt, and current (with external components)
• Cold-Junction Compensation (CJC): Built-in sensor for accurate thermocouple measurements
• Input Ranges: Programmable gains for ranges such as ±100 mV and ±10 V
• Filter: 2 Hz lowpass filter on each channel to eliminate high-frequency noise
• Overvoltage Protection: Up to ±42 V
• Maximum Sampling Rate: The maximum rate of the entire SCXI chassis is dependent on the controlling DAQ device, but the SCXI-1102 itself can support fast scanning.

Product Advantages

The SCXI-1102 offers several key benefits that make it a valuable tool for data acquisition systems:

• High Channel Density: With 32 channels in a single SCXI module, it allows for a high-density measurement system, reducing the physical footprint and cost of your setup.
• Superior Signal Conditioning: The module includes per-channel amplification and filtering, which are crucial for getting accurate measurements from low-level signals. The built-in 2 Hz lowpass filter effectively eliminates high-frequency noise and prevents aliasing.
• Thermocouple-Specific Features: It is optimized for thermocouple measurements, with an onboard cold-junction compensation sensor that ensures high accuracy over a wide range of temperatures.
• Modularity and Expandability: As an SCXI module, it can be easily integrated into an SCXI chassis alongside other modules, allowing you to create a customized and scalable system for various measurement tasks.

Applications

The SCXI-1102 is widely used in applications that require precise measurement of low-level signals in demanding environments. Common applications include:

• Automotive Testing: Measuring temperatures in engines, exhaust systems, and other components using thermocouples.
• Process Control: Monitoring temperatures and other process variables in industrial plants.
• Environmental Monitoring: Collecting data from sensors in a variety of environments.
• Research and Development: Performing precise, multichannel measurements in laboratory settings.

Important Considerations

For optimal performance and to ensure safe operation, keep these points in mind when using the SCXI-1102:

• Required Hardware: The SCXI-1102 is a module and must be used within an SCXI chassis (e.g., SCXI-1000) and paired with a controlling DAQ device (e.g., a PCI or PXI card) to acquire data.
• Terminal Block: You will need a compatible terminal block (e.g., the SCXI-1303) to connect your sensor wires to the module. Proper wiring and termination are essential for accurate measurements.
• Software and Drivers: To configure and program the module, you need to install the NI-DAQmx driver software. This driver manages the communication between your PC, the DAQ device, and the SCXI chassis.
• Measurement Type: While the module is versatile, ensure your measurement settings (e.g., input range, gain) are correctly configured in your software to match the signal from your sensor. Incorrect settings can lead to inaccurate or clipped readings.

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