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The NI CFP-AI-111 is a high-density analog input module from National Instruments’ rugged Compact FieldPoint platform, engineered for precision industrial measurements in electrically harsh environments. This 8-channel module delivers exceptional signal integrity for current/voltage sensing across critical process monitoring applications. The CFP-AI-111 features individual channel isolation (250Vrms) and 16-bit resolution, enabling simultaneous sampling at 1kS/s per channel with ±0.05% accuracy. Its innovative signal conditioning architecture incorporates programmable IEPE excitation for accelerometers and piezoelectric sensors, plus <1>NI CFP-AI-111 withstands extreme conditions with -40°C to 70°C operation and 50g shock resistance, making it ideal for oilfield SCADA, power quality monitoring, and mobile test systems where reliability is paramount.
NI CFP-AI-111
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | CFP-AI-111 |
| Manufacturer | National Instruments |
| Product Type | Analog Input Module |
| Channels | 8 (isolated) |
| Input Ranges | ±10V, ±5V, 0-20mA (software-selectable) |
| Resolution | 16-bit |
| Sampling Rate | 1 kS/s (aggregate) |
| Accuracy | ±0.05% of reading ±0.01% of range |
| Isolation | 250Vrms channel-to-channel, 250Vrms channel-to-bus |
| Excitation | 2.5mA IEPE constant current (per channel) |
| Overvoltage Protection | ±30V continuous |
| EMC Compliance | EN 61326-1, IEC 61000-6-2 |
| Operating Temperature | -40°C to +70°C |
| Connection Type | Removable screw terminal (TB-111) |
| Dimensions | 90 x 100 x 87 mm |
Main Features and Advantages
Advanced Signal Conditioning: Proprietary Delta-Sigma ADC technology with automatic burnout detection and open-wire sensing ensures measurement validity. Integrated 10Hz/10kHz dual-pole filters suppress aliasing without external components.
Ruggedized Design: Conformal-coated PCB with IP40 front-panel protection resists humidity, dust, and chemical exposure. The CFP-AI-111 survives 100g mechanical shock and 5g vibration per IEC 60068-2-64.
Intelligent Diagnostics: Continuous channel health monitoring detects ground loops, sensor degradation, and signal saturation. Built-in thermistors enable temperature-compensated calibration.
Seamless Ecosystem Integration: Native LabVIEW FPGA support allows custom filtering algorithms. TSN-compatible when used with cFP-22xx controllers for deterministic distributed control.
Application Field
The CFP-AI-111 excels in distributed measurement systems: In renewable energy, it monitors turbine vibration (IEPE accelerometers) and gearbox temperatures across wind farms. Oil & gas applications include wellhead pressure surveillance and cathodic protection current monitoring in Class I Div 2 areas.
Manufacturing utilizes its high-channel density for injection molding machine pressure profiling and plating tank voltage/current monitoring. For transportation, the NI CFP-AI-111 tracks brake system pressures in railcars with MIL-STD-202G shock compliance. Water treatment plants deploy it for pump bearing temperature networks and chemical dosing flow verification.
NI CFP-AI-111
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