Description

The NI SCXI-1104C is a high-density signal conditioning module from National Instruments’ SCXI platform, engineered for precision analog measurements in industrial test and data acquisition systems. Designed as a 32-channel multiplexer with programmable gain instrumentation amplifiers (PGIA), this module delivers exceptional signal integrity for low-voltage sensors across demanding environments. The SCXI-1104C features individual channel calibration and ±30V overvoltage protection, enabling direct connection to thermocouples, strain gauges, and RTDs without external protection circuits. Its innovative design includes per-channel filtering with software-selectable cutoff frequencies (10Hz to 10kHz) and cold-junction compensation (CJC) for thermocouple measurements with ±0.5°C accuracy. Compatible with NI DAQmx drivers and LabVIEW, the NI SCXI-1104C transforms PXI/PCI data acquisition cards into robust measurement systems capable of handling 500Vrms channel-to-bus isolation, making it indispensable for automotive validation, structural testing, and power electronics monitoring.

NI SCXI-1104C

Technical Specifications

Main Features and Advantages

Precision Signal Path: Low-noise (<3>

Adaptive Filtering: Software-configurable anti-aliasing filters adapt to sensor types – e.g., 10Hz cutoff for strain gauges, 10kHz for accelerometers. Simultaneous 50/60Hz rejection eliminates power-line interference.

Rugged Protection: Solid-state overvoltage clamps withstand 500V transients. Galvanic isolation prevents ground loops in multi-vendor test stands. The SCXI-1104C meets IEC 61000-4-4 Level 4 EFT standards.

Smart Calibration: Onboard calibration memory stores per-channel correction coefficients. TEDS sensor support automates configuration for IEEE 1451.4-compliant transducers.

Application Field

The SCXI-1104C excels in high-channel-count measurements: Automotive test benches use it for battery cell voltage monitoring (0-5V) across 192+ channels with synchronized sampling. Power electronics labs leverage its isolation for SiC inverter efficiency testing at 100kHz switching frequencies.

Structural health monitoring deploys 32-channel strain gauge networks on bridges with ±0.1μϵ resolution. Aerospace applications include wing fatigue testing with 500Vrms isolation from hydraulic pump noise. The NI SCXI-1104C enables pharmaceutical freeze-dryer validation with 64 thermocouples per module and FDA 21 CFR Part 11-compliant data logging.

NI SCXI-1104C

Related Products

SCXI-1001: 4-slot chassis for SCXI-1104C

TB-1104: Dedicated terminal block

SCXI-1328: Active strain gauge completion module

PXI-6259: M Series DAQ for SCXI-1104C control

SCXI-1126: High-voltage isolation module

NI 9949: Shielded connector kit

SCXI-1102B: 64-channel multiplexer alternative

NI SCC-2345: Compact signal conditioning carrier