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Product Introduction
The ABB 81ET03 / 81ET03M-E GJR2389800R1210 is a high-performance Temperature Input Module designed specifically for industrial automation and process control systems. This module is part of ABB’s renowned Symphony series, which is known for its reliability, interoperability, and robust design in critical control environments. The 81ET03M-E module enables the accurate and consistent measurement of temperature values using a range of sensor inputs, primarily thermocouples and RTDs (Resistance Temperature Detectors).
The module seamlessly integrates with ABB’s INFI 90 and Symphony DCS platforms, allowing precise thermal data acquisition that is essential in temperature-sensitive processes across industries like power generation, chemical processing, metallurgy, and oil and gas. With built-in diagnostics, hot-swap capability, and channel-level fault detection, the 81ET03 offers not only precision but also operational continuity.
Product Specifications
| Parameter | Details |
|---|---|
| Product Type | Temperature Input Module |
| Model Number | 81ET03 / 81ET03M-E |
| Product Code | GJR2389800R1210 |
| Input Type | Thermocouple, RTD (Pt100, Pt1000) |
| Number of Channels | 8 temperature input channels |
| Signal Type | Analog (temperature) |
| Input Range | -200°C to +850°C (RTD), -270°C to +1760°C (TC) |
| Resolution | 16-bit A/D conversion |
| Accuracy | ±0.1% of full-scale |
| Channel Isolation | Channel-to-channel and channel-to-ground isolation |
| Update Rate | 100 ms (typical) |
| Mounting Type | Rack-mounted (DIN rail or cabinet) |
| Hot Swap Capability | Yes |
| Self Diagnostics | Yes |
| Redundancy Support | Supported via system configuration |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5%–95% (non-condensing) |
| Power Supply Voltage | 24 VDC (nominal) |
| Power Consumption | Approx. 6.5 W |
| Communication Protocol | Symphony/INFI 90 standard protocol |
| Dimensions (W x H x D) | 115 x 100 x 30 mm |
| Weight | 0.6 kg |
Applications
The ABB 81ET03M-E Temperature Input Module is widely adopted in industrial environments where temperature monitoring and precision are critical. Its main application areas include:
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Power Generation Plants: Monitoring turbine, boiler, and condenser temperatures.
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Chemical and Petrochemical Facilities: Ensuring process consistency in reactors and distillation columns.
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Steel and Metal Processing Plants: Accurate thermal profiling during forging, casting, and heat treatment.
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Food and Beverage Industry: Compliance with thermal hygiene standards during processing.
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Pharmaceutical Manufacturing: Maintaining stable temperatures in synthesis and fermentation processes.
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Oil & Gas Refineries: Critical temperature control for safety and efficiency.
Product Advantages
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High Accuracy and Stability: Precision temperature readings with minimal drift over time.
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Versatile Sensor Compatibility: Supports both thermocouple and RTD inputs, enhancing field adaptability.
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Channel Isolation: Prevents cross-talk and enhances safety by electrically isolating each channel.
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Hot Swappable Design: Enables maintenance without shutting down the system, increasing uptime.
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Comprehensive Diagnostics: Onboard self-check and fault reporting capabilities for easy troubleshooting.
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Scalable Integration: Compatible with ABB Symphony and INFI 90 systems, ideal for both new and legacy upgrades.
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Durability in Harsh Environments: Built to withstand industrial temperature and humidity extremes.
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Long Product Lifecycle: Backed by ABB’s commitment to long-term support for process automation systems.
Frequently Asked Questions (FAQ)
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What sensor types are compatible with the 81ET03 module?
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It supports most standard thermocouples (Type J, K, T, etc.) and RTDs (Pt100, Pt1000).
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How many input channels does this module support?
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It supports up to 8 isolated temperature input channels.
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Is the 81ET03 module hot-swappable?
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Yes, the module can be replaced without shutting down the system.
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Can the module detect open or short circuits in sensors?
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Yes, it includes diagnostics for fault detection at each channel.
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Does it support redundancy features?
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Yes, it can be configured for use in redundant control systems.
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What is the typical accuracy of the temperature readings?
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The module provides ±0.1% of full-scale accuracy.
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Which ABB systems is this module compatible with?
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It is fully compatible with Symphony DCS and INFI 90 control platforms.
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What are the environmental limits for operation?
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Operating temperatures: -20°C to +60°C; humidity: up to 95% non-condensing.
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What is the module’s form factor or mounting type?
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It is designed for rack or cabinet mounting, compatible with DIN systems.
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Is firmware update or remote configuration supported?
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Yes, firmware updates and configurations can be performed via system tools.
Recommended Related Models (Same Series or Compatible)
| Model Number | Description | Input Type | Channels | Remarks |
|---|---|---|---|---|
| 81AI01 | Analog Input Module | Voltage/Current | 8 | General analog acquisition |
| 81AO01 | Analog Output Module | Voltage/Current | 8 | Output to actuators |
| 81DI01 | Digital Input Module | Digital (24VDC) | 16 | Standard digital inputs |
| 81DO01 | Digital Output Module | Digital (Relay) | 16 | Relay control |
| 81EU01 | Universal Input Module | Mixed signal | 8 | Supports multiple input types |
| 81IM01 | Input Multiplexer Module | Multiplexed Analog | 16 | Channel multiplexing |
Popular ABB Models (Same Brand)
| Model Number | Description | Application | Protocol Support |
|---|---|---|---|
| CI854AK01 | PROFIBUS DP-V1 Communication Interface | Fieldbus Integration | PROFIBUS, Symphony Plus |
| PM864AK01 | AC 800M Controller | Process Automation | IEC 61131-3, Ethernet/IP |
| AI810 | Analog Input Module (4-20mA) | General Analog Acquisition | 800xA, Freelance |
| DO810 | Digital Output Module (24VDC, Source) | Digital Actuation | 800xA, Freelance |
| CI853K01 | Communication Module for S800 I/O | Multi-protocol Gateway | Modbus, Ethernet |
| PM902F | Redundant CPU for Symphony Plus | High-availability Control Systems | Symphony Plus |
