The NI 9215 / cRIO-9215 is a 4-channel differential analog input module for CompactDAQ and CompactRIO systems. It delivers simultaneous sampling at 100 kS/s per channel using 16-bit SAR ADCs across a ±10.0 V input range. The screw terminal variant provides 250 Vrms channel-to-earth ground isolation (CAT II) with double isolation barrier architecture for noise rejection and safety. NIST-traceable calibration ensures high-accuracy measurements on both grounded and floating differential signals. Common-mode voltage must remain within ±10.2 V, supporting signals across the full measurement range of ±10.2 V to ±10.6 V. Operating temperature spans -40 °C to 70 °C with minimal power consumption—560 mW maximum in active mode, 25 µW in sleep mode. The screw terminal housing weighs 150 g and accepts 0.5 to 0.6 N·m torque. Ideal for precision data acquisition in industrial, research, and laboratory environments where galvanic isolation and differential signal integrity are required.

Technical Specifications

• Channels: 4 differential analog input channels with simultaneous sampling
• Resolution: 16-bit SAR ADC
• Sample Rate: 100 kS/s per channel (simultaneous)
• Input Voltage Range: ±10.0 V
• Common-Mode Range: All inputs within ±10.2 V of average AI– reference
• Measurement Span: ±10.2 V (minimum) to ±10.6 V (maximum)
• Isolation: 250 Vrms channel-to-earth ground (CAT II); double isolation barrier
• Power Consumption: 560 mW (active, full-scale 100 kS/s); 25 µW (sleep)
• Operating Temperature: -40 °C to 70 °C
• Weight (Screw Terminal): 150 g
• Terminal Torque: 0.5 to 0.6 N·m

– Key Features

• Double isolation barrier for enhanced noise immunity and safety
• Supports grounded or floating differential signal inputs
• NIST-traceable calibration for high-accuracy measurements
• Low sleep-mode power consumption (25 µW)
• Compact form factor compatible with existing CompactDAQ/CompactRIO chassis

– Compatibility & Integration

• Platforms: CompactDAQ, CompactRIO
• Software: NI-DAQmx, NI-RIO, LabVIEW, LabVIEW SignalExpress