Overview
The Yokogawa AAI841-H module delivers high-precision analog input and output for CENTUM VP distributed control systems. It enables accurate acquisition and control of critical process variables including temperature, flow, pressure, and pH. Additionally, the module supports HART communication, allowing real-time monitoring and precise signal management for demanding industrial automation applications. Its robust design, configurable channels, and high accuracy make it ideal for modern process control systems.
The AAI841-H provides flexibility for various installations, whether rack-mounted or sub-base mounted. It ensures reliable performance under harsh industrial conditions while maintaining precise measurement standards across multiple analog channels.
Features
- Supports 8 standard analog input and 8 analog output channels, expandable to 16 isolated input channels.
- Provides HART communication for accurate diagnostics and configuration of connected field devices.
- Ensures high precision with ±0.1% full-scale accuracy and 12-bit resolution.
- Channel-to-channel and channel-to-ground isolation minimizes interference and protects signals.
- Compatible with Yokogawa CENTUM VP distributed control systems for seamless integration.
- Compact design allows flexible installation in control cabinets or racks.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model Number | AAI841-H |
| Product Type | Analog Input/Output Module |
| Input Channels | 8 standard, optional 16 isolated channels |
| Output Channels | 8 standard analog outputs |
| Input Signal Range | 4–20 mA DC, configurable |
| Signal Type | 4–20 mA current loop with HART support |
| Input Impedance | 250 Ω ±0.1% |
| Accuracy | ±0.1% of full scale |
| Resolution | 12 bits |
| Isolation | Channel-to-channel and channel-to-ground |
| External Connections | M4 screw terminals |
| Power Consumption | 5.5 W |
| Operating Temperature | -20°C to +70°C (standard), 0°C to +50°C (expanded input) |
| Humidity Range | 5% to 95% RH, non-condensing |
| Mounting | Rack-mounted or sub-base installation |
| System Compatibility | Yokogawa CENTUM VP DCS |
| Series | RMS-TSG-TZ-C compatible |
| Applications | Process control, manufacturing, utilities, and industrial automation |
Benefits
- Ensures precise and reliable control for critical process parameters.
- Reduces signal interference through full isolation across channels.
- Simplifies system integration with flexible mounting options.
- Supports HART diagnostics for easier device management and maintenance.
- Handles harsh industrial environments while maintaining high performance.
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