NI SCXI-1300

Product Name:​ 32-Channel General-Purpose Shielded Screw Terminal Block with Cold-Junction Compensation
Product Introduction:​ A front-panel terminal block for 32-channel SCXI analog input modules. Provides screw terminals, shielding, and an onboard IC cold-junction sensor for thermocouple scanning.
Category:
Description
Technical Specifications:
  • Screw terminals: 72 (32 differential pairs + ground/guard/ref)
  • CJC sensor: 10 mV/°C, ±1.3 °C accuracy (0–50 °C), ±0.5 °C repeatability
  • Module interface: 96-pin DIN-C
  • Wire size: AWG 24–12 (0.2–2.5 mm²)
  • Terminal rating: 250 VAC/DC, 2 A per terminal
  • Operating temp: 0–50 °C (electronics), storage -40–70 °C
  • Dimensions: 190 × 35 × 120 mm
  • Weight: 0.28 kg
    Material Composition:​ Polyamide housing, phosphor-bronze contacts, tinned steel shield, IC temperature sensor (LM35-class)
    Structural Features:​ Removable top cover, strain-relief bar, earth solder lug, guarded shield plane, thumbscrew module fixation
    Working Principle:​ Passive terminal fan-out with isolated shield plane; CJC sensor voltage read by host DAQ to correct thermocouple cold-junction error.
    Installation Requirements:​ Mount on compatible SCXI module front; route wires through strain relief; strip ≤7 mm; torque 5–7 in-lb; ground shield lug to chassis.
    Usage Notes:​ Place chassis away from heat sources for CJC accuracy; do not mix TC and high-voltage wires on same block; one-point shield earth only.
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