NI SCXI-1322 SCXI Terminal Block

The NI SCXI-1322 is a front-mount terminal block that interfaces directly with the SCXI-1122 module, providing 48 screw terminals for field wiring connections in signal conditioning and data acquisition systems. It delivers isothermal construction for precision thermocouple measurements with onboard cold-junction compensation, shielded enclosure design to minimize signal noise, and strain-relief clamps for secure wire connections. The terminal block accommodates 16 pairs of input channels and 7 pairs of excitation channels, with configurable VEX/SENSE terminals for remote sensing applications including heavy-load strain-gauge half-bridge circuits.

– Technical Specifications

• Model: NI SCXI-1322
• Type: SCXI Terminal Block
• Designed for: SCXI-1122 Module
• Screw Terminals: 48 total (16 pairs input channels, 7 pairs excitation channels)
• Power Requirement: +5 VDC
• Construction: Isothermal design for thermocouple accuracy
• Cold-Junction Compensation: Onboard sensor included
• Shielding: Fully shielded enclosure
• Wire Management: Strain-relief clamps
• Mounting: Front-mount configuration
• Installation Category: IEC 664 Category II
• Operating Temperature (Calibration): 15 °C to 35 °C

– Key Features

• Excitation channels feature reconfigurable VEX/SENSE+ and VEX/SENSE– terminals for remote sensing capability
• Resistor removal (R3 and R4) enables sense terminal operation for applications with heavy electrical loads
• Signal insulation rated for 250 V environments with 26–14 AWG wire (300 V, 60 °C)
• Signal insulation rated for 480 V environments with 26–14 AWG wire (600 V, 60 °C)
• Direct transducer connections via screw terminals

– Typical Applications

• Thermocouple signal conditioning with precision cold-junction compensation
• Strain-gauge data acquisition with remote sensing
• Multi-channel transducer interfacing in SCXI systems
• Industrial signal acquisition requiring noise-minimized connections

– Compatibility & Integration

The SCXI-1322 connects to the SCXI-1122 input connector via front-mount design, providing standardized integration into SCXI rack-mount systems. Field wiring connects directly through the 48 screw terminals.