Bently Nevada 3500/25-126398-01H I/O Module | System 1 Machinery Protection Platform
Engineering Background
The Bently Nevada 3500 Series is the industry benchmark for continuous online machinery protection, deployed across turbines, compressors, pumps, and rotating equipment in oil & gas, power generation, and petrochemical facilities worldwide. The 3500/25-126398-01H is a dedicated I/O module within this platform, providing the critical signal interface layer between field-mounted transducers and the 3500 rack’s monitoring and protection logic.
Product Positioning
Designed for procurement engineers and reliability teams requiring a verified, drop-in replacement or expansion I/O module for existing 3500 rack installations. Konmask.com supplies this module from authenticated surplus and OEM-traceable channels, ensuring full compatibility with Baker Hughes / Bently Nevada System 1 software environments.
Complete Technical Specifications
- Part Number: 126398-01H
- Catalog Reference: 3500/25
- Module Type: I/O Interface Module
- Platform: Bently Nevada 3500 Machinery Protection System
- Manufacturer: Bently Nevada (Baker Hughes)
- Revision: H (latest production revision)
- Form Factor: 3500 Series rack-mount card
- Weight: 400 g (approx.)
- Operating Temperature: 0 °C to +65 °C (standard rack environment)
- Power Supply: Supplied via 3500 rack backplane
- Communication: Internal rack bus; compatible with System 1 software
- Compliance: CE, SIL-capable platform (rack-level certification)
Proven Application Environments
- Gas turbine and steam turbine protection systems
- Centrifugal and reciprocating compressor monitoring
- Pump and motor vibration surveillance
- Offshore platform and FPSO machinery protection racks
- LNG plant rotating equipment monitoring
- Refinery and petrochemical critical machinery trains
- Power generation (combined cycle, hydro, nuclear BOP)
Engineering Advantages
- Direct rack compatibility: Plug-and-play replacement within any 3500 Series chassis — no firmware re-flash required for same-revision swap
- Revision H: Latest production revision incorporating all ECN (Engineering Change Notice) updates from Bently Nevada
- Signal integrity: Maintains transducer loop integrity for proximity probes, accelerometers, and velocity sensors
- System 1 integration: Fully recognized by Baker Hughes System 1 Evolution software for configuration, trending, and alarm management
- Reduced downtime: Stocked module enables same-day dispatch to minimize unplanned outage duration
System Architecture & Signal Flow
Within the 3500 rack, the 3500/25 I/O module occupies a dedicated slot and interfaces field wiring via the rack’s terminal block or I/O expansion chassis. Signal flow: Field transducer → I/O module input conditioning → Rack backplane → Monitor card (e.g., 3500/40M, 3500/42M, 3500/45) → Trip relay / System 1 software. The module handles signal buffering and channel routing, ensuring that monitor cards receive clean, conditioned inputs compliant with Bently Nevada’s transducer specifications.
Sourcing & Quality Verification
- Sourced from authenticated surplus inventory and authorized distribution channels
- Each unit undergoes visual inspection, label verification (part number, revision, serial range), and functional pre-shipment check
- Original Bently Nevada / Baker Hughes labeling and revision markings preserved
- Packaging: ESD-safe anti-static bag + foam-lined carton
- Certificate of conformance available upon request
- 30-day return window for DOA (Dead on Arrival) units
Procurement Process
- Step 1: Confirm your rack slot availability and existing module revision via System 1 or rack documentation
- Step 2: Submit your PO or inquiry to support@konmask.com with quantity and required delivery date
- Step 3: Receive proforma invoice with lead time confirmation (typically 1–3 business days for in-stock units)
- Step 4: Payment via T/T, PayPal, or agreed trade terms
- Step 5: Dispatch with tracking; DHL / FedEx express available for urgent requirements
Technical FAQ
Q: Is the 3500/25-126398-01H compatible with all 3500 rack sizes?
A: Yes — the 3500/25 I/O module is compatible with both 3-slot and full-size 3500 racks. Verify slot assignment in your rack configuration documentation.
Q: Can this module be used with System 1 Evolution (v7+)?
A: Yes. The 3500 platform is fully supported by System 1 Evolution. No hardware modification is required.
Q: What is the difference between revision H and earlier revisions?
A: Revision H incorporates all cumulative ECNs. For mixed-revision racks, consult Bently Nevada’s compatibility matrix or contact our technical team for guidance.
Q: Do you provide a warranty?
A: We offer a 30-day DOA guarantee. Extended warranty options are available — contact us for details.
Q: Can you supply multiple units for a plant-wide spares program?
A: Yes. Volume pricing is available. Contact support@konmask.com with your BOM requirements.
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