Description
Product Description
The ABB DSAI146 3BSE007949R1 is a 31-channel RTD input module for ABB Advant OCS, tailored for Pt100 temperature sensing in industrial processes. It has a 3-wire design, 12-bit resolution, and a reference channel for calibration, covering -100°C to +320°C or -200°C to +640°C ranges. The ABB DSAI146 3BSE007949R1 uses 24VDC power, dissipates 3.8W, and works from -40°C to +85°C with IP20 protection. It integrates with ABB Advant OCS via the S100 I/O bus, offering hot-swap and spring-loaded terminals for quick installation. The ABB DSAI146 3BSE007949R1 ensures accurate temperature monitoring for refineries, power plants, and chemical facilities, certified to CE, UL, and CSA standards for global use.
Product Parameters
| Parameter | Specification |
|---|---|
| Model | ABB DSAI146 3BSE007949R1 |
| Type | RTD Input Module |
| Brand | ABB Advant OCS |
| Input Channels | 31 (3-wire Pt100)+1 reference channel |
| Resolution | 12 bits |
| Temperature Range | -100°C to +320°C / -200°C to +640°C |
| Power Supply | 24 VDC |
| Power Dissipation | 3.8 W |
| Operating Temp | -40°C to +85°C |
| Storage Temp | -40°C to +85°C |
| Dimensions | 324 mm×234 mm×22.5 mm |
| Weight | 0.4 kg |
| Protection | IP20 |
| Certifications | CE, UL, CSA |
Advantages and Features
- High Channel Density: The ABB DSAI146 3BSE007949R1 has 31 Pt100 channels plus a reference channel, maximizing temperature monitoring in limited cabinet space.
- Precise Calibration: A dedicated reference channel ensures long-term accuracy and reduces drift by 40% vs. non-referenced modules.
- Hot-Swap Maintenance: It allows replacement without system shutdown, cutting downtime by 60% in critical processes.
- Robust Connectivity: Spring-loaded terminals simplify wiring and reduce installation time by 30%.
- Wide Temperature Range: -40°C to +85°C operation suits harsh industrial environments.
Application Cases in Application Fields
- Refinery Furnace Monitoring: The ABB DSAI146 3BSE007949R1 monitors 28 furnace tube temperatures, reducing overheating incidents by 25% vs. legacy modules.
- Power Plant Steam Turbine: It tracks 31 bearing temperatures in a 600MW turbine, enabling predictive maintenance and avoiding unplanned outages.
- Chemical Reactor Control: The ABB DSAI146 3BSE007949R1 monitors reactor wall temperatures, ensuring process stability and product quality.
- Steel Mill Rolling Mill: It measures 31 roll temperatures, optimizing cooling and reducing material waste by 15%.
Comparisons with Competing Products
| Feature | ABB DSAI146 3BSE007949R1 | Competitor A (Emerson DeltaV RTD Module) | Competitor B (Siemens S7-400 RTD Module) |
|---|---|---|---|
| Channels | 31+1 ref | 16 | 8 |
| Calibration | Reference channel | Manual | Auto |
| Hot-Swap | Yes | No | Partial |
| Integration | ABB Advant OCS native | Requires adapter | Requires gateway |
| Power Dissipation | 3.8 W | 5 W | 4.5 W |
| Price Range | $1,500-$2,200 | $1,800-$2,500 | $2,000-$2,800 |
Selection Suggestions and Precautions
- Selection Suggestions
- Choose the ABB DSAI146 3BSE007949R1 for ABB Advant OCS systems needing high-channel Pt100 monitoring with reference-based calibration.
- Pair with surge protectors in harsh industrial environments to enhance transient voltage resilience.
- Use with ABB Advant OCS software for real-time monitoring and predictive maintenance alerts.
- Precautions
- Ensure 3-wire Pt100 connections to avoid lead resistance errors affecting the ABB DSAI146 3BSE007949R1’s accuracy.
- Match power to 24VDC to prevent module damage.
- Follow lockout-tagout during hot-swap to avoid electrical hazards in live systems.
- Calibrate annually with the reference channel to maintain 12-bit resolution and temperature accuracy.
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