Rotating Machinery Vibration Monitoring Solution — Bently Nevada 3500/42M | 3500 Series
Where This Product Is Used
The Bently Nevada 3500/42M (P/N 176449-02) Proximitor/Seismic Monitor is deployed in continuous, safety-critical rotating machinery protection systems across heavy industry. Typical installation environments include:
- Steam & Gas Turbines — shaft radial vibration and axial position monitoring on power generation units
- Centrifugal Compressors — real-time proximity and seismic measurement on pipeline and refinery compressor trains
- Pumps & Fans — bearing housing seismic velocity monitoring for large BOP and cooling-water pumps
- Gearboxes — high-speed pinion shaft vibration detection in petrochemical and LNG facilities
- Marine Propulsion Systems — shaft monitoring on vessel main engines and auxiliary turbines
- Nuclear & Thermal Power Plants — turbine-generator protection per IEC 61511 / ISA-84 SIL requirements
This dual-channel module accepts inputs from eddy-current proximity probes (Bently Nevada 3300 XL / 7200 series) and seismic velocity transducers simultaneously, making it the preferred choice for API 670-compliant machinery protection racks.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 176449-02 |
| Model | 3500/42M |
| Series | Bently Nevada 3500 |
| Module Type | Proximitor / Seismic Monitor |
| Input Channels | 2 (dual-channel) |
| Proximity Input Range | −2 VDC to −18 VDC (3300 XL / 7200 series probes) |
| Seismic Input | Velocity transducer (4-wire, passive) |
| Frequency Response | 0.5 Hz – 10 kHz (proximity); 2 Hz – 1 kHz (seismic) |
| Output Signal | 4–20 mA (buffered), OK relay, Alert/Danger relay |
| Power Supply | +24 VDC (from 3500 rack power module) |
| Rack Compatibility | Bently Nevada 3500 Rack (full-height slot) |
| Operating Temperature | 0 °C to +65 °C |
| Humidity | 5% – 95% RH, non-condensing |
| Weight | ~500 g (module only) |
| Certifications | CE, FM, CSA, ATEX (zone 2 safe area) |
Why Engineers Specify This Model
- API 670 5th Edition Compliance — meets all mandatory requirements for machinery protection systems on critical rotating equipment
- Dual Measurement Technology — single slot handles both proximity (non-contact shaft position) and seismic (bearing housing velocity) inputs, reducing rack real estate and wiring cost
- Proven Reliability — the 3500 platform has >30 years of field history in refineries, power plants, and offshore platforms worldwide
- Seamless DCS Integration — 4–20 mA outputs and Modbus/FOUNDATION Fieldbus options allow direct tie-in to DeltaV, Ovation, ABB 800xA, and Honeywell Experion systems
- Fast Alarm Response — <100 ms trip response time meets SIL 2 functional safety latency budgets
- Hot-Swap Capable — module can be replaced under power without shutting down the 3500 rack (with I/O module installed)
Complete System Bill of Materials
A fully operational Bently Nevada 3500 vibration monitoring channel using the 3500/42M typically requires:
- 3500/42M (176449-02) — Proximitor/Seismic Monitor module (this item)
- 3500/05 or 3500/05-01 — Rack Power Module
- 3500/20 — Rack Interface Module (RIM)
- 3500/15 — I/O Module (terminal block interface)
- 3300 XL 8mm or 11mm Proximity Probe System (probe + extension cable + Proximitor sensor)
- Seismic velocity transducer (e.g., Bently Nevada 330400 or equivalent)
- Interconnect cables: armored coaxial (probe to Proximitor), shielded twisted-pair (Proximitor to 3500/15)
- 3500 Configuration Software (System 1 or rack keypad)
Contact us for bundle pricing on complete channel assemblies.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition)
- ISO 10816 / ISO 20816 — Mechanical vibration evaluation of machines
- IEC 61508 / IEC 61511 — Functional Safety (SIL assessment basis)
- ATEX Directive 2014/34/EU — Equipment for potentially explosive atmospheres (safe-area module; hazardous-area probes rated separately)
- CE Marking — EMC Directive 2014/30/EU
- FM / CSA — North American safety certification
Quality Assurance & Sourcing
All Bently Nevada modules listed on Konmask.com are sourced through verified industrial surplus and authorized distribution channels. Each unit undergoes the following before dispatch:
- Visual inspection for physical damage, corrosion, and connector integrity
- Firmware version verification against Bently Nevada release notes
- Functional bench test: power-on self-test (POST) pass confirmation
- Anti-static packaging with humidity indicator card
- Photographic documentation of serial number and condition provided on request
We supply to EPC contractors, plant maintenance teams, and OEM integrators. Traceability documentation and test reports available upon request for regulated industries.
How to Source This Part
- Add to Cart — click the purchase button above for immediate checkout
- Request a Quote — for bulk orders (>2 units), lead-time confirmation, or export documentation, email support@konmask.com
- Expedite / Emergency — call or WhatsApp +0086 19859288691 for same-day response on critical plant shutdowns
- Cross-Reference — if you are unsure whether 176449-02 is the correct revision for your rack, share your existing module label photo and we will confirm compatibility
Application-Specific FAQ
Q: Is the 3500/42M compatible with older 3300 series probes?
A: Yes. The module accepts standard −24 VDC Proximitor output signals from both 3300 and 3300 XL probe systems. Verify gap voltage range with your probe datasheet.
Q: Can this module replace a 3500/40M in an existing rack?
A: The 3500/42M is the successor to the 3500/40M and is slot-compatible. Configuration must be updated via System 1 software to reflect the new module type.
Q: What is the difference between part numbers 176449-01 and 176449-02?
A: The -02 revision includes updated firmware for enhanced Modbus communication and improved EMC performance. It is backward-compatible with all -01 configurations.
Q: Do you provide export documentation for international shipments?
A: Yes. We provide commercial invoice, packing list, and certificate of origin. ECCN classification and export license assessment available on request for controlled destinations.
Q: Can I get a warranty on this module?
A: All units carry a 90-day functional warranty. Extended warranty and exchange programs available — contact us for details.
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Contact: support@konmask.com | +0086 19859288691
