Yokogawa AAI141-H50

Description

Product Description

Product Parameters

Advantages and Features

1. High-Precision Signal Conversion: Yokogawa AAI141-H50 delivers 16-bit resolution and ±0.05% span accuracy for 4-20 mA signals, ensuring reliable measurement of critical process variables (e.g., pressure, flow) with minimal error.
2. Multi-Signal Compatibility: Support for 4-20 mA, voltage, thermocouple, and RTD inputs eliminates the need for multiple specialized modules, reducing system complexity and rack space requirements.
3. Robust Isolation & Protection: Channel-to-channel and channel-to-ground isolation (500 VAC/1500 VAC) combined with surge protection (±2 kV) prevents signal interference and module damage in harsh industrial environments.
4. Safety-Critical Compliance: IEC 61508 SIL 2 and ATEX Zone 2 certifications make Yokogawa AAI141-H50 suitable for hazardous process applications (e.g., chemical reactors, refinery distillation units) where safety is paramount.
5. Seamless CENTUM VP Integration: Pre-configured for Yokogawa’s DCS, the module auto-detects input signals and integrates with CENTUM VP’s engineering tools, reducing calibration and setup time by up to 30%.
6. Advanced Diagnostics: Built-in self-diagnostics for open circuits, short circuits, and sensor faults provide real-time alerts to operators, enabling proactive maintenance and reducing unplanned downtime.

Application Fields and Cases

Core Application Fields

• Oil & Gas Industry: Refinery pressure/level transmitter input processing, pipeline flow measurement
• Chemical Industry: Reactor temperature (thermocouple/RTD) monitoring, pH/conductivity signal acquisition
• Power Generation Industry: Boiler steam flow (4-20 mA) measurement, turbine vibration sensor input
• Water & Wastewater Industry: Treatment plant level sensor input, pump pressure monitoring

Typical Application Case

Competitor Comparison (vs. Emerson DeltaV AI Card KJ3221X1-BA1)

Selection Suggestions

1. Channel Count Needs: Prioritize Yokogawa AAI141-H50 for high-density analog input applications (16 channels/module); choose 8-channel modules for small-scale systems.
2. Accuracy Requirements: Select Yokogawa AAI141-H50 for critical process measurements (±0.05% span accuracy); lower-precision applications may use cost-effective alternatives.
3. Hazardous Environment Needs: Use Yokogawa AAI141-H50 for ATEX Zone 2 hazardous areas; non-hazardous environments may use standard analog input modules.
4. Ecosystem Compatibility: Choose Yokogawa AAI141-H50 for existing CENTUM VP/ProSafe-RS installations; opt for Emerson DeltaV AI cards for Emerson DCS systems.
5. Spare Parts Planning: Reserve one Yokogawa AAI141-H50 module per 100 analog input channels to ensure quick replacement in case of module failure.

Precautions

1. Wire 4-20 mA signals using twisted-pair shielded cables and ground the shield at the sensor end to minimize electromagnetic interference with Yokogawa AAI141-H50.
2. Calibrate the module annually using Yokogawa’s certified calibration tools to maintain ±0.05% span accuracy and comply with industry regulatory requirements (e.g., ISO 9001).
3. Configure input signal types (4-20 mA/thermocouple/RTD) via CENTUM VP engineering software to ensure proper signal conversion and prevent measurement errors.
4. Test channel isolation after installation by applying a 500 VAC test voltage between channels to verify no leakage, critical for preventing cross-signal interference.
5. Mount Yokogawa AAI141-H50 in a well-ventilated section of the CENTUM VP rack to maintain operating temperature within 0°C ~ 55°C and avoid overheating.
6. Store spare modules in anti-static packaging in a dry, temperature-controlled environment (-20°C ~ 70°C) to prevent moisture or static damage to internal components.

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