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NI SCXI-1121

4-Channel Isolation Amplifier with Excitation

  • Shunt calibration
  • Lowpass filtering
  • Isolated voltage and current excitation
  • Isolated analog inputs
  • NI-DAQ driver software simplifies configuration and measurements
  • Signal inputs from millivolts to ±250 V

Use SCXI Advisor to configure an SCXI data acquisition system based on this module.

National Instruments SCXI-1121 and SCXI-1122 are designed for a wide variety of sensor and signal inputs requiring isolation. The SCXI-1121 offers independently configurable isolation amplifiers, filters, and excitation sources for each channel. Both modules offer 250 Vrms working isolation and can acquire strain, RTD, thermocouple, millivolt, volt, 250 V, 0 to 20 mA, and 4 to 20 mA current input signals. Both modules can multiplex their channels into a single channel of the DAQ device, and you can add modules to increase channel count. The SCXI-1121 also offers parallel-mode operation.

most popular item most popular item(s)
Part Number Description Est Ship  US Dollars Qty
Common Configuration
776572-21most popular item SCXI-1121 4 ch Isolation AmplifierCall$ 1,199.00
777687-27SCXI-1327 High-Voltage Attenuator Terminal Block, Cast10 - 15$ 369.00
Complete your SCXI Data Acquisition System with USB Connectivity
776572-1600NI SCXI-1600, USB Data Acquisition and Control Module5 - 10$ 1,199.00
776570-01most popular item SCXI-1000 4-Slot Chassis, U.S. 120 VAC5 - 10$ 829.00

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Additional Product Information


Related Information

Specifications Documents


Specifications Summary

General
Product Name SCXI-1121
Product Family Signal Conditioning
Form Factor SCXI
Operating System/Target Windows , Real-Time , Linux
LabVIEW RT Support Yes
Measurement Type Bridge-based sensor , Current , RTD , Strain gauge , Temperature , Thermocouple , Voltage
Isolation Type Ch-Ch Isolation
RoHS Compliant No
Signal Conditioning Cold-junction compensation , Voltage excitation , 0-20 mA current input , Low-pass filtering
Analog Input
Channels 0 , 4
Single-Ended Channels 0
Differential Channels 4
Sample Rate 333 kS/s
Bandwidth 10 KHz
Max Voltage 250.0 V
Maximum Voltage Range 250.0 , -250.0 V
Minimum Voltage Range 2.500 V , -2.500 V
Simultaneous Sampling Yes
Input Impedance 1.0E9 Ohm
Available Filters 4.0 , 10.0 Hz
Excitation Current 150 µA
Bridge Configurations Quarter Bridge , Half Bridge , Full Bridge
Analog Output
Channels 0
Digital I/O
Bidirectional Channels 0
Input-Only Cannels 0
Output-Only Channels 0
Number of Channels 0 , 0 , 0
Counter/Timers
Counters 0
Physical Specifications
Length 20.300 cm
Width 17.300 cm
Height 3.0 cm
I/O Connector Screw terminals
Minimum Operating Temperature 0.0 °C
Maximum Operating Temperature 50.0 °C
Minimum Storage Temperature -20.0 °C
Maximum Storage Temperature 70.0 °C

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:

Calibration

NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.

Training

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Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support

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