National Instrument SCXI-1127 Multi channel analog input signal conditioning module
Specific Parameters
Brand National Instrument (NI)
Product Series SCXI Series Analog Input Signal Conditioning Modules
Product Type High-Precision Multi-Channel Thermocouple/Voltage/Strain Signal Conditioning Module
Model SCXI-1127
Number of Input Channels 16 differential analog input channels
Supported Signal Types Thermocouple (J, K, T, E, R, S, B, N type), Voltage signals (±10mV to ±10V), Strain gauge signals (120Ω/350Ω)
Gain Range 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 (software programmable)
Resolution Equivalent resolution ≥18 bits when used with 16-bit DAQ card; Equivalent resolution ≥22 bits when used with 24-bit DAQ card
Input Impedance Voltage mode: ≥10GΩ; Thermocouple mode: ≥100MΩ; Strain mode: compatible with 120Ω/350Ω strain gauges
Filter Characteristics 8th-order anti-aliasing low-pass filter, cutoff frequency 0.1Hz-1kHz programmable
Cold Junction Compensation Built-in intelligent cold junction compensation module, compensation accuracy ±0.05℃ (0℃-50℃)
Isolation Voltage 2500V AC isolation between channels and between channel and backplane (1 minute)
Operating Voltage Powered by SCXI chassis (±15V DC, +5V DC)
Operating Temperature Range 0℃ – 55℃
Storage Temperature Range -20℃ – 70℃
Relative Humidity 10% – 90% Non-condensing
Dimensions 132mm×160mm×37mm (L×W×H)
Weight Approximately 380g
Certification CE, UL, CSA, FCC Part 15 Class A, IEC 61010-1
Compatible Devices Compatible with SCXI-1000/1001/1002/1003/1006 chassis, compatible with multiple NI DAQ cards such as PCIe-6363, USB-6289
Diagnostic Functions Power failure diagnosis, Channel open/short circuit diagnosis, Cold junction compensation failure diagnosis, Filter abnormality diagnosis
Product Performance
16-channel differential input integrated design, compatible with multiple low-level signals such as thermocouples, voltages and strain gauges, can meet the conditioning needs of multiple types of signals at the same time, with high integration and scene adaptability
Equipped with wide-range software programmable gain, which can accurately match weak signals of different amplitudes, and achieve ultra-high precision signal acquisition with high-resolution DAQ cards to meet precision testing needs
Built-in 8th-order programmable anti-aliasing low-pass filter, which can flexibly configure the cutoff frequency according to the signal frequency, effectively filter out high-frequency interference, and ensure the integrity and accuracy of signal acquisition
High-voltage isolation design combined with enhanced anti-electromagnetic interference circuit can effectively suppress common-mode interference and electromagnetic radiation interference in industrial sites, protect backend DAQ equipment, and ensure stable signal transmission
Built-in high-precision intelligent cold junction compensation module with compensation accuracy up to ±0.05℃, no need for additional external compensation components, greatly improving the accuracy of thermocouple temperature measurement and system construction efficiency
Fully compatible with SCXI bus specification and NI-DAQmx driver software, can be seamlessly integrated with multiple SCXI chassis and DAQ cards, and compatible with LabVIEW, LabWindows/CVI development environments, with extremely strong system compatibility
Equipped with full-link fault diagnosis function, real-time monitoring of module operation status and channel connection status, fault information can be synchronized to the acquisition system, facilitating quick positioning and troubleshooting
Industrial-grade stable packaging design, can operate continuously for a long time in the operating temperature range of 0℃-55℃, adapting to the dual needs of laboratory precision testing and complex industrial on-site environments
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