Yokogawa designed the AAR181-S00 as a high-precision RTD input module for CENTUM VP and CENTUM CS 3000 platforms. This unit accepts signals from resistance temperature detectors for accurate temperature measurement. It converts resistance values into digital data for reliable process monitoring.
Key Technical Specifications
The AAR181-S00 module features a compact housing suitable for DIN rail or panel mounting. It measures 107 millimeters in height and 130 millimeters in depth. This unit weighs approximately 0.3 kilograms for flexible installation.
| Specification | Detail |
|---|---|
| Model Number | AAR181-S00 |
| Module Type | RTD Input Module |
| Input Channels | 8 isolated RTD input channels |
| RTD Types | Pt100, Pt50, Ni100, Cu10, Cu50 |
| RTD Wiring | 2-wire, 3-wire, or 4-wire connection |
| Accuracy | ±0.1 percent of span |
| Resolution | 14 bits |
| Isolation | 500 V AC between channels and system |
| Data Update Period | 1 second |
| Excitation Current | 0.5 mA for RTD measurement |
| Dimensions | 107 x 33 x 130 mm (H x W x D) |
| Weight | 0.3 kg |
Moving to connectivity, this module provides eight isolated channels for various RTD sensors. You connect Pt100, Ni100, or Cu10 devices directly to the terminal blocks. Consequently, the design supports 2-wire, 3-wire, and 4-wire configurations for optimal lead resistance compensation.
Design and Application Focus
Engineers select the AAR181-S00 for its high-accuracy temperature measurement in demanding environments. The design includes 500 V AC isolation to protect the system from electrical noise. Furthermore, the module provides constant excitation current for stable RTD measurement across all channels. This feature ensures reliable readings even with long cable runs.
Unlike standard analog input modules, this unit offers dedicated circuitry for resistance-based sensors. You can configure each channel independently for specific RTD types and wiring schemes. Additionally, the 3-wire and 4-wire connection options effectively cancel lead resistance errors for precision applications.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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