Turbomachinery Vibration Monitoring Solution — Bently Nevada 3500/42M | 3500 Series
Where This Product Is Used
The Bently Nevada 3500/42M 176449-02GB Proximitor/Seismic Monitor is deployed in mission-critical rotating machinery protection systems across heavy industry. Typical installation environments include:
- Gas & Steam Turbines — continuous shaft radial vibration monitoring on power generation units
- Centrifugal Compressors — real-time proximity probe signal conditioning in petrochemical and LNG plants
- Pumps & Fans — seismic (velocity/acceleration) monitoring for bearing housing vibration in water treatment and HVAC systems
- Marine Propulsion Systems — shaft monitoring on vessel main engines and auxiliary turbines
- Offshore Platforms — API 670-compliant machinery protection in hazardous area control rooms
- Steel & Mining — rolling mill drive train and crusher vibration surveillance
Engineers specify the 3500/42M when a single monitor slot must handle both proximity (eddy-current) and seismic (velocity/acceleration) transducer inputs simultaneously, reducing rack footprint without sacrificing channel count.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model / Part Number | 3500/42M — 176449-02GB |
| Series | 3500 Machinery Protection System |
| Monitor Type | Dual-Channel Proximitor / Seismic |
| Input Channels | 2 (configurable per channel: proximity or seismic) |
| Proximity Input Range | –24 VDC (Bently Nevada standard) |
| Seismic Input | Velocity (ICP/non-ICP) or Acceleration |
| Output | 4–20 mA (per channel), Buffered transducer output |
| Rack Compatibility | 3500 Rack (3500/05, 3500/15, 3500/20) |
| Communication | Modbus RTU / TCP (via rack gateway) |
| Power Supply | Via rack backplane (24 VDC) |
| Approvals | CE, FM, CSA, ATEX (zone-dependent) |
| Operating Temperature | –20 °C to +65 °C |
| Weight | ~500 g (module only) |
Specifications are reference values. Always verify against the official Bently Nevada datasheet for your revision.
Why Engineers Specify This Model
- Dual-mode flexibility — each channel independently configured for proximity or seismic input; one module covers both shaft and bearing housing measurements
- API 670 compliance — meets the industry standard for machinery protection systems, satisfying insurance and EPC contractor requirements
- Proven 3500 ecosystem — drop-in compatible with existing 3500 racks; no rack replacement required during upgrades or spares replacement
- Buffered outputs — allows parallel connection to DCS/SCADA without loading the transducer circuit
- Configurable via System 1 / Rack Configuration Software — alarm setpoints, full-scale ranges, and OK limits set in software, not hardware jumpers
- Hot-swap capable — module can be replaced under power in most rack configurations, minimizing process downtime
Complete System Bill of Materials
A typical 3500/42M installation requires the following components (sold separately unless noted):
- 3500/05 or 3500/15 Rack (power supply + backplane)
- 3500/42M Monitor Module — this listing
- 3500/20 Rack Interface Module (for Modbus/OPC-UA communication)
- Bently Nevada 3300 XL or 7200 Series Proximity Probes + Extension Cables + Proximitor Sensors
- Seismic transducers: 330400 Velocity Sensor or 330500 Accelerometer (application-dependent)
- I/O Terminal Board (176449-series, matched to module revision)
- System 1 Evolution Software (for configuration and online monitoring)
Contact support@konmask.com for complete BOM quotations and rack-level system builds.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition)
- IEC 61508 — Functional Safety (SIL-capable configurations)
- ATEX / IECEx — Hazardous area approvals (verify suffix for zone rating)
- CE Marking — EMC Directive 2014/30/EU
- FM / CSA — North American hazardous location approvals
- ISO 10816 / ISO 20816 — Mechanical vibration measurement standards
Quality Assurance & Sourcing
Konmask sources Bently Nevada 3500-series modules through established industrial automation supply channels. Our standard process for every unit includes:
- Visual inspection: connector integrity, PCB condition, label legibility
- Functional power-on verification where test equipment is available
- Anti-static packaging with humidity indicator card
- Photographic documentation provided on request
- Traceability records retained for 3 years
We supply new surplus, refurbished, and used-tested units. Condition is stated explicitly in each order confirmation. If you require factory-new with full OEM warranty, please specify at inquiry stage.
How to Source This Part
- Add to Cart — for standard stock units with listed price
- Request a Quote — for volume orders (3+ units), system builds, or expedited delivery: support@konmask.com
- WhatsApp / Phone — urgent sourcing: +0086 19859288691
- Provide your PO / datasheet — we match exact part number suffix (e.g., -02GB) to confirm hardware revision compatibility
Typical lead time: 3–7 business days for in-stock units. Express air freight available to most destinations.
Application-Specific FAQ
Q: Can the 3500/42M replace a 3500/40M in an existing rack?
A: Yes. The 3500/42M is the successor to the 3500/40M and is backward-compatible with the same rack slot and terminal board, provided firmware is updated via Rack Configuration Software.
Q: What is the difference between the -02GB and other suffixes?
A: The suffix encodes hardware options including I/O configuration and approval markings. The -02GB variant is a standard dual-channel configuration with CE/ATEX markings. Always verify suffix compatibility with your terminal board and rack revision before ordering.
Q: Can this monitor accept inputs from non-Bently Nevada probes?
A: The proximity input is optimized for Bently Nevada –24 VDC proximitor output. Third-party probes with compatible output voltage and sensitivity (V/mm or V/mil) may work but are not factory-supported. Seismic inputs accept standard ICP and passive velocity sensors.
Q: Is System 1 software required for operation?
A: No. The module operates standalone once configured. System 1 is required for initial configuration, setpoint changes, and online trending/diagnostics.
Q: Do you provide a warranty?
A: Konmask offers a 90-day functional warranty on tested units. Terms are stated in the order confirmation. Extended warranty and exchange programs available on request.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
