EMERSON KJ3002X1-BG2 12P1731X082 Thermocouple Input Module | Replacement, Equivalent & Selection Guide
The EMERSON KJ3002X1-BG2 (Part No. 12P1731X082) is a high-precision Thermocouple Input Module designed for the Emerson DeltaV™ Distributed Control System (DCS). This 8-channel module delivers reliable thermocouple signal acquisition for demanding process industries including oil & gas, petrochemical, power generation, and pharmaceuticals. Whether you need an original replacement, a compatible equivalent, or guidance on selecting the right module for a new or retrofit project, this page covers everything you need to make a confident purchasing decision.
Technical Specifications
- Manufacturer: Emerson Electric / Fisher-Rosemount
- Part Number: KJ3002X1-BG2
- Reference Number: 12P1731X082
- Module Type: Thermocouple Input Module (TC Input)
- Platform: Emerson DeltaV™ DCS (S-series I/O)
- Input Channels: 8 channels
- Thermocouple Types Supported: J, K, T, E, R, S, B, N (IEC/ANSI standard)
- Cold Junction Compensation (CJC): Built-in automatic CJC per channel
- A/D Resolution: 16-bit
- Isolation: Channel-to-channel and channel-to-bus galvanic isolation
- Communication Bus: DeltaV proprietary I/O bus
- Power Supply: Bus-powered via DeltaV I/O carrier
- Operating Temperature: 0°C to 60°C
- Storage Temperature: −40°C to 85°C
- Humidity: 5% to 95% RH, non-condensing
- Certifications: CE, UL/cUL, FM (Class I, Division 2)
- Form Factor: DeltaV S-series I/O card
- Weight: Approx. 200 g
Compatible Replacement & Equivalent Models
When the original KJ3002X1-BG2 is unavailable, end-of-life, or cost-prohibitive, the following models may serve as direct or functional replacements. Always verify firmware and carrier compatibility before substitution.
Same-Family DeltaV Revisions (Direct Replacements):
- KJ3002X1-BA1 (12P1731X012) — Earliest production revision; functionally equivalent in DeltaV v9.3–v10.x. Confirm firmware compatibility for v11.3+.
- KJ3002X1-BC1 (12P1731X032) — Revision C; same channel count and TC type support. Widely used as a drop-in replacement across DeltaV versions.
- KJ3002X1-BD1 (12P1731X042) — Revision D; enhanced noise immunity. Recommended upgrade path from BA1/BC1.
- KJ3002X1-BF1 (12P1731X062) — Revision F; improved CJC accuracy. Compatible with DeltaV v11.3 and above.
- KJ3002X1-BG1 (12P1731X081) — Immediate predecessor to BG2; functionally interchangeable in all supported DeltaV versions.
Cross-Platform Functional Equivalents (Migration Projects):
- VE3008 (Yokogawa CENTUM VP) — 8-channel TC input for CENTUM VP migration; requires full I/O mapping reconfiguration.
- 1756-IT6I2 (Allen-Bradley ControlLogix) — 6-channel isolated TC input for Rockwell platform migration; not a plug-in replacement.
- HIMA F3236 (HIMax) — SIL-rated TC input for safety-critical migration projects.
Note: Cross-brand equivalents require engineering validation and I/O reconfiguration. Contact Konmask for migration support and compatibility assessment.
Why Choose the Original Model
- Guaranteed DeltaV Compatibility: Factory-validated for seamless integration with DeltaV S-series controllers and carriers — no firmware patching or configuration workarounds required.
- Proven Field Reliability: Deployed in thousands of process plants globally with documented MTBF exceeding 10 years under typical operating conditions.
- Latest Revision Advantages: BG2 offers improved EMC performance and CJC accuracy over all prior revisions — the preferred choice for new installations and critical replacements.
- Emerson Support Ecosystem: Full access to Emerson lifecycle support, firmware updates, and AMS Device Manager integration for predictive maintenance.
- Regulatory Compliance: Pre-certified for hazardous area use (FM Class I, Div. 2), reducing site validation burden and project schedule risk.
- Hot-Swap Capable: Supports replacement without process shutdown on compatible DeltaV carriers, minimizing operational downtime.
Typical Applications
- Temperature monitoring in oil & gas upstream and downstream processes
- Reactor and furnace temperature control in petrochemical plants
- Boiler and turbine temperature measurement in power generation facilities
- Sterilization and batch temperature logging in pharmaceutical manufacturing
- Heat exchanger monitoring in refinery operations
- Multi-zone temperature profiling in food & beverage processing
- Kiln and dryer temperature control in cement and building materials industries
System Compatibility
- DeltaV Controller Series: MD, MD Plus, SD, SD Plus, MQ, PK (all S-series I/O bus controllers)
- DeltaV Software Version: v9.3 and above (v11.3+ recommended for full feature support and latest diagnostics)
- I/O Carrier: KJ3001X1 series 8-slot and 4-slot carriers
- Redundancy: Supported in redundant I/O configurations with appropriate redundant carrier
- CHARM Compatibility: Not applicable — this is a traditional S-series I/O module, not a CHARM card
- AMS Integration: Supported via DeltaV AMS Device Manager for loop diagnostics and health monitoring
- Electronic Marshalling: Not compatible — requires traditional hardwired marshalling cabinet
Selection Guide
Use the following criteria to confirm the KJ3002X1-BG2 is the right module for your application:
- Signal Type: Thermocouple (millivolt) inputs only. For RTD/resistance inputs, select the KJ3001X1 series instead.
- Channel Count: 8 channels per module. For higher density requirements, consider multiple modules or CHARM-based I/O (CIOC + CHARMs).
- TC Type Verification: Confirm your thermocouple type (J/K/T/E/R/S/B/N) is within the supported range. Type C and D are not natively supported.
- Revision Selection: BG2 (12P1731X082) is the latest production revision — preferred for all new installations and critical replacements.
- Hazardous Area Classification: This module is rated FM Class I, Div. 2. For Zone 1 / Class I Div. 1 applications, use certified intrinsic safety barriers upstream.
- Budget Optimization: Certified refurbished units available at reduced cost with full test documentation — contact us for condition grading and pricing.
- Retrofit vs. New Build: For retrofit projects on older DeltaV versions (v9.3–v10.x), earlier revisions (BC1/BD1) may offer cost savings with equivalent functionality.
Quality Assurance & Sourcing
- Source: Sourced from authorized distributors, decommissioned plant stock, and certified refurbishers with full traceability.
- Inspection Protocol: Each unit undergoes visual inspection, functional power-on test, communication bus verification, and channel-level signal test prior to shipment.
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Condition Grades Available:
- New (Factory-Sealed): Original Emerson packaging with full OEM documentation.
- Refurbished (Tested & Certified): Fully tested, cleaned, and certified with test report.
- Used (As-Removed, Tested): Functional units from decommissioned systems, tested and documented.
- Warranty: 12-month warranty on all units sold by Konmask.com, covering functional defects.
- Counterfeit Prevention: All units verified against Emerson serial number databases where applicable. Suspected counterfeit units are rejected and quarantined.
- Documentation Package: Datasheet, functional test report, and certificate of conformance available upon request.
How to Order
- Online: Add to cart directly on this page. Secure checkout — bank transfer, PayPal, and major credit cards accepted.
- Email RFQ: Send part number, quantity, required condition grade, and delivery timeline to [email protected]
- Phone / WhatsApp: +0086 19859288691 — available Monday–Saturday, 09:00–18:00 CST
- Lead Time: In-stock units ship within 1–3 business days. Ex-stock lead time varies — contact us for real-time availability.
- Export & International Shipping: Worldwide shipping available. Full export documentation provided: commercial invoice, packing list, certificate of origin.
- Bulk / Project Orders: Volume pricing available for 5+ units. Request a formal quotation with your project timeline.
Replacement & Compatibility FAQ
Q: Can I replace KJ3002X1-BG2 with an earlier revision such as KJ3002X1-BA1?
A: In most cases yes, but you must verify DeltaV firmware version compatibility. Earlier revisions may not support all diagnostic features available in v11.3+. We recommend testing in a non-critical loop first or consulting Emerson’s revision compatibility matrix.
Q: Is the KJ3002X1-BG2 hot-swappable?
A: Yes. When installed in a DeltaV carrier that supports hot-swap, the module can be replaced without shutting down the controller or interrupting other I/O channels. Confirm your specific carrier model supports this feature.
Q: What is the difference between KJ3002X1-BG2 and KJ3002X1-BG1?
A: BG2 (12P1731X082) is a minor hardware revision of BG1 (12P1731X081) with improved EMC performance. They are functionally interchangeable in all supported DeltaV versions.
Q: Can this module be used outside of a DeltaV system?
A: No. The KJ3002X1-BG2 uses Emerson’s proprietary DeltaV I/O bus protocol and cannot operate as a standalone module or integrate with third-party DCS/PLC platforms without significant re-engineering.
Q: Do you provide a test report with the module?
A: Yes. A functional test report is included with all refurbished and used units. New factory-sealed units include Emerson’s original quality documentation.
Q: What thermocouple types are NOT supported by this module?
A: Type C (W5Re/W26Re) and Type D thermocouples are not natively supported. For these types, an external signal conditioner or an alternative module with extended TC type support is required.
Q: Is a refurbished unit reliable for critical process applications?
A: Yes, when properly tested and certified. Konmask’s refurbished units undergo the same functional test protocol as new units. We provide full test documentation and a 12-month warranty. For SIL-rated loops, consult your safety engineer regarding use of refurbished components.
Q: How do I confirm the module revision before ordering?
A: The revision code (e.g., BG2) and reference number (e.g., 12P1731X082) are printed on the module label. You can also confirm via the DeltaV hardware catalog or by contacting Konmask with your serial number for verification.
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