Machinery Protection Solution — BENTLY NEVADA 3500/94M | 3500 Series
Where This Product Is Used
The BENTLY NEVADA 3500/94M (P/N 184826-01) is a dedicated communications gateway module within the 3500 Series Machinery Protection System. It is deployed in mission-critical rotating machinery monitoring applications across the following industries and environments:
- Oil & Gas: Upstream compressor trains, midstream pipeline booster stations, LNG liquefaction turbines
- Power Generation: Steam turbine-generator sets, gas turbine protection racks, combined-cycle plant DCS integration
- Petrochemical & Refining: Reactor charge pumps, cracked gas compressors, ethylene plant machinery trains
- Pulp & Paper / Heavy Industry: Large induced-draft fans, gearbox monitoring, high-speed centrifugal pumps
- Marine & Offshore: FPSO propulsion systems, offshore platform gas lift compressors
Engineers specify this module when a 3500 rack must communicate real-time vibration, position, and process data to a plant DCS, SCADA, or historian via Modbus TCP/RTU or other supported protocols — without interrupting the primary protection function.
Technical Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 184826-01
- Model: 3500/94M
- Series: 3500 Machinery Protection System
- Module Type: Communications Gateway Module
- Supported Protocols: Modbus RTU / Modbus TCP (refer to OEM documentation for full protocol list)
- Rack Compatibility: 3500 Series rack (requires 3500/20 rack interface module)
- Power Supply: Supplied via rack backplane
- Weight: 300 g (approx.)
- Operating Environment: Industrial — refer to Bently Nevada 3500/94M datasheet for full environmental ratings
- Certifications: CE, SIL-capable system (system-level assessment required)
Why Engineers Specify This Model
- Non-intrusive data access: Provides read access to all 3500 rack monitor data without affecting the primary protection voting logic
- Seamless DCS integration: Enables direct Modbus communication to Honeywell, Emerson DeltaV, ABB, Yokogawa, and Siemens PCS 7 systems
- Historian connectivity: Feeds OSIsoft PI, AspenTech IP.21, and similar process historians for long-term trend analysis
- Rack-native design: Occupies a standard 3500 rack slot — no external gateway hardware or additional wiring required
- Proven reliability: Widely deployed in SIL 1/2 assessed machinery protection systems globally
- Reduced engineering cost: Eliminates the need for third-party OPC servers or serial converters in many architectures
Complete System Bill of Materials
A typical 3500 Series rack with communications capability includes the following components. Konmask.com can source all items:
- 3500/05 Rack (19-inch, 3U) — P/N 133388-01 or equivalent
- 3500/15 Power Supply Module
- 3500/20 Rack Interface Module (RIM)
- 3500/94M Communications Gateway Module — P/N 184826-01 (this item)
- 3500/22M Transient Data Interface (TDI) — optional, for waveform capture
- Monitor modules as required: 3500/40M (proximity), 3500/42M (velocity/acceleration), 3500/45 (position), 3500/50M (tachometer)
- Keyphasor module: 3500/25
- I/O terminal blocks and interconnect cables
Compliance & Industry Standards
- API 670: 5th Edition — Machinery Protection Systems (the 3500 platform is the reference implementation for API 670 compliance)
- IEC 61511 / IEC 61508: SIL-capable system; SIL assessment is system- and application-specific
- CE Marking: Compliant for EU industrial installations
- ISO 10816 / ISO 20816: Vibration severity evaluation standards supported by 3500 monitor outputs
- ATEX / IECEx: Consult Bently Nevada for zone-rated installation requirements; barriers/isolators may be required
Quality Assurance & Sourcing
Konmask.com specializes in the procurement of industrial automation and machinery protection components for B2B buyers. Our sourcing process for the 3500/94M 184826-01 includes:
- Multi-source supplier verification with documented traceability
- Visual and functional inspection prior to dispatch
- Original manufacturer packaging preserved where available
- Full documentation package available on request (test records, CoC)
- Warranty: 90-day exchange warranty on all stocked units
We supply OEM-original and factory-refurbished units. Condition is clearly stated on each listing. Contact us to confirm current stock condition and lead time before placing your order.
How to Source This Part
- Request a quote: Email support@konmask.com with your required quantity, delivery location, and urgency
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, business hours CST)
- Bulk / project orders: We support BOM-level procurement — send your full parts list for a consolidated quote
- Lead time: In-stock units ship within 2–5 business days; sourced units typically 7–21 days depending on origin
- Payment: T/T (bank transfer), PayPal, and other B2B payment terms available upon qualification
Application-Specific FAQ
Q: Can the 3500/94M replace a 3500/92 or 3500/93 module?
A: The 3500/94M is a distinct model with specific protocol support. Compatibility depends on your rack firmware version and DCS protocol requirements. Contact us with your existing rack configuration for guidance.
Q: Does this module support OPC-UA natively?
A: The 3500/94M supports Modbus-based communication. OPC-UA connectivity typically requires an intermediate gateway (e.g., Kepware, Matrikon). Confirm your DCS integration architecture before ordering.
Q: Is this module suitable for SIL 2 applications?
A: The 3500 platform is SIL-capable; however, SIL 2 compliance requires a full system-level assessment per IEC 61511. The module alone does not carry a standalone SIL 2 certificate.
Q: What is the difference between 184826-01 and other 184826-xx revisions?
A: Revision suffixes denote hardware or firmware revisions. Functional compatibility is generally maintained across revisions, but confirm with your Bently Nevada system documentation or contact Konmask for clarification.
Q: Can Konmask supply the full 3500 rack BOM?
A: Yes. We regularly fulfill complete rack builds and individual module replacements. Send your BOM to support@konmask.com for a consolidated quote.
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Contact: support@konmask.com | +0086 19859288691
