The NI SCXI-1314 is a universal strain terminal block that connects directly to the SCXI-1520 universal strain/bridge module, providing 88 screw terminals organized into eight groups of 11 terminals per channel. This front-mounting terminal block simplifies field wiring for strain gauge applications while maintaining signal integrity across demanding test environments. The design includes socketed precision resistors for shunt calibration and quarter-bridge completion, enabling rapid reconfiguration for different strain gauge impedance values without component replacement.
Technical Specifications
• Model: SCXI-1314 (Part Number 777687-14)
• Terminal Count: 88 screw terminals in eight groups of 11
• Lead Spacing: 0.500 in.
• Shunt Calibration Resistors: Two precision 100 kΩ (socketed, user-replaceable)
• Quarter-Bridge Completion Resistor: Factory default 350 Ω for 350 Ω strain gauges (socketed, replaceable)
• Optional Resistors: Eight 120 Ω resistors included for 120 Ω strain gauge applications
• Differential Input Impedance: 2 MΩ
• Common Mode Input Impedance: 1 MΩ
• Screw Terminal Torque: 5 to 7 in.-lb.
• Maximum Wire Insulation Strip Length: 7 mm
– Key Features
• Each of the eight channel groups provides independent signal conditioning with dedicated terminals for positive and negative excitation (P+, P–), input signals (S+, S–), quarter-bridge completion (QTR), remote sense (RS+, RS–), and dual shunt calibration paths (SCA, SCB)
• Socketed resistor design eliminates soldering during reconfiguration
• Precision 100 kΩ shunt calibration resistors enable accurate signal verification
• Compatible quarter-bridge completion values support both 350 Ω and 120 Ω strain gauge impedances
– Typical Applications
Strain measurement in laboratory and industrial data acquisition systems, structural monitoring, materials testing, and load cell integration requiring quarter-bridge or half-bridge strain gauge configurations.
– Compatibility & Integration
Designed exclusively for the SCXI-1520 universal strain/bridge module. Operating temperature range 0 to 50 °C; storage temperature –20 to 70 °C; relative humidity 10 to 90% non-condensing. Indoor use only.
