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Product Introduction
The Emerson KJ3221X1-BK1 12P4704X042 is an 8-channel, isolated 4-20 mA HART analog input/output module designed for use with the DeltaV™ Distributed Control System (DCS). This card offers seamless integration of analog signals with HART digital communication for enhanced process control and diagnostics. Each of the eight channels can be independently configured, and the module supports both standard 4-20 mA signaling and HART protocol, enabling bi-directional communication with smart field devices. Engineered for industrial-grade reliability, the KJ3221X1-BK1 is widely deployed in oil & gas, chemical, power, and water treatment applications where process accuracy and device monitoring are critical.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | KJ3221X1-BK1 12P4704X042 |
| Channels | 8 (individually configurable) |
| Signal Type | 4-20 mA analog with HART capability |
| HART Protocol Support | Yes (HART 5/6/7 compliant) |
| Isolation | Channel-to-channel and channel-to-ground isolation |
| Input Impedance | >250 ohms |
| Power Supply Requirement | 24 VDC nominal |
| Update Rate | 250 ms (typical) |
| Accuracy | ±0.05% of span |
| Calibration | Factory calibrated, field adjustable |
| Redundancy Support | Yes (when used with redundant system architecture) |
| Operating Temperature Range | -40°C to +70°C (-40°F to +158°F) |
| Storage Temperature Range | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 5% to 95% non-condensing |
| Mounting | DIN rail or panel mount |
| Dimensions | 160 x 35 x 130 mm |
| Weight | 0.249 kg |
| Certifications | CE, ATEX, FM, CSA, IECEx |
| Compatibility | DeltaV™ system |
Product Applications
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Oil and Gas Industry: Suitable for upstream and downstream process automation, including wellhead monitoring, pipeline instrumentation, and refinery process control.
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Chemical and Petrochemical Plants: Ensures reliable analog signal handling and HART communication with intelligent transmitters and control valves.
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Power Generation: Used for temperature, pressure, and flow control systems in both conventional and renewable power plants.
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Water and Wastewater Treatment: Deployed in automated SCADA/DCS systems for water quality monitoring, flow metering, and remote diagnostics.
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Pharmaceutical Industry: Supports accurate analog input from process analyzers and regulated control devices.
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Food and Beverage Processing: Provides high reliability in hygienic and regulated production environments.
Product Advantages
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Dual Functionality: Combines 4-20 mA analog signal acquisition with HART digital communication on the same channel.
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Channel Isolation: Reduces noise and enhances system protection from electrical disturbances.
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DeltaV Native Integration: Seamlessly integrates into DeltaV architecture, eliminating the need for additional configuration or interfaces.
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Enhanced Diagnostics: Real-time HART diagnostics enable predictive maintenance and quick fault detection.
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Hot Swappable: Allows for replacement without shutting down the system, minimizing downtime.
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Scalable Design: Modular hardware makes it easy to expand and adapt based on application needs.
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High Accuracy: Maintains precise signal integrity across industrial environments.
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Global Certifications: Ensures safe deployment in hazardous environments.
Frequently Asked Questions (FAQs)
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What is the function of the Emerson KJ3221X1-BK1 module?
It is an 8-channel analog input/output card that supports 4-20 mA signaling and HART communication for interfacing with field instrumentation. -
Is this card compatible with non-HART devices?
Yes, it can work with standard 4-20 mA analog devices even if they do not support HART. -
Can I hot-swap this module during operation?
Yes, the KJ3221X1-BK1 is hot-swappable in a supported DeltaV system. -
Does the card support redundancy?
Yes, it supports redundant operation when used with a redundant DeltaV system configuration. -
Is each channel isolated from the others?
Yes, each of the eight channels is electrically isolated from each other and from ground. -
How do I retrieve HART diagnostic data?
The DeltaV system interfaces with the card to pull real-time diagnostics via AMS Device Manager or integrated asset management tools. -
What protocols are supported besides HART?
This card is designed for 4-20 mA analog and HART only; digital protocols like Modbus or Profibus are not supported on this module. -
What is the power supply requirement for the module?
It operates on a 24 VDC nominal supply. -
Is calibration required in the field?
The card is factory calibrated, though it can be adjusted if needed during commissioning. -
What is the lifespan of the KJ3221X1-BK1?
It is designed for long-term operation in industrial environments, typically exceeding 10+ years under proper conditions.
Related or Similar Emerson Models
| Model Number | Description | Channels | Signal Type | Dimensions (mm) |
|---|---|---|---|---|
| KJ3222X1-BA1 | 8-Channel HART Analog Output Card | 8 | 4-20 mA + HART Out | 160 x 35 x 130 |
| KJ3204X1-BA1 | 4-Channel Analog Input Card | 4 | 4-20 mA | 160 x 35 x 130 |
| KJ3241X1-BA1 | 16-Channel DI Card | 16 | Digital Input | 160 x 35 x 130 |
| KJ3242X1-BA1 | 16-Channel DO Card | 16 | Digital Output | 160 x 35 x 130 |
| KJ3002X1-BG2 | Power Controller Module | – | Power Management | 160 x 35 x 130 |
| KJ4001X1-NA1 | System Power Supply | – | Power Supply | 160 x 35 x 130 |
Popular Emerson Models
| Model Number | Description | Application Area | Signal Type |
|---|---|---|---|
| AMS Trex Device Communicator | Handheld communicator for HART/Fieldbus | Field Device Mgmt | HART/FF |
| DeltaV SE3007 | DeltaV Controller | Process Control | Proprietary |
| Ovation 5X00105G01 | Analog Input Module | Power Generation | 4-20 mA |
| ROC800L | Remote Operations Controller | Remote Monitoring | Mixed (AI/DI/DO) |
| CSI 2140 | Machinery Health Analyzer | Vibration Analysis | Proprietary |
| KJ4010X1-BG1 | DeltaV System Network Interface Module | Communications | Ethernet/ControlNet |
