Bently Nevada 3500/45 176449-04 – Dual-Channel Position Monitor | 3500 Series Machinery Protection System
Engineering Background: The Bently Nevada 3500 Series is the industry-standard modular machinery protection platform deployed across power generation, oil & gas, petrochemical, and heavy industrial facilities worldwide. Designed to API 670 specifications, the 3500 rack architecture provides continuous, real-time monitoring of critical rotating machinery parameters including vibration, position, speed, and temperature.
Product Positioning: The 3500/45 (Part No. 176449-04) is a dual-channel position monitor module engineered for precise measurement of shaft position, differential expansion, and case expansion on turbines, compressors, and large rotating machines. It delivers 4–20 mA analog outputs and relay-based alarm/danger trip outputs, integrating seamlessly into the 3500 rack backplane for centralized machinery protection.
Complete Technical Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 176449-04
- Model: 3500/45
- Module Type: Dual-Channel Position Monitor
- Platform: 3500 Series Machinery Protection System
- Measurement Parameters: Shaft absolute position, differential expansion, case expansion, thrust position
- Input Channels: 2 (dual-channel)
- Transducer Compatibility: Bently Nevada proximitor/extension cable systems (3300 XL, 7200 Series)
- Analog Output: 4–20 mA (per channel)
- Alarm Outputs: Relay contacts (Alert / Danger)
- Communication: 3500 rack backplane (TDI bus)
- Power Supply: Supplied via 3500 rack backplane
- Operating Temperature: 0°C to +65°C
- Storage Temperature: -40°C to +85°C
- Humidity: 5% to 95% RH, non-condensing
- Weight: 840 g
- Compliance: API 670, CE, SIL-capable
- Form Factor: Single-slot 3500 rack module
Proven Application Environments
- Steam and gas turbine thrust position monitoring
- Compressor differential expansion measurement
- Large pump and motor shaft position tracking
- Turbine case expansion monitoring in power plants
- Offshore platform rotating machinery protection
- LNG plant critical compressor trains
- Refinery and petrochemical process machinery
Engineering Advantages
- Dual-channel architecture enables redundant measurement for SIL-rated safety loops
- API 670 compliant — meets international machinery protection standards for critical rotating equipment
- Seamless 3500 rack integration — hot-swappable module with no rack shutdown required
- 4–20 mA analog output — direct interface to DCS, SCADA, and historian systems
- Configurable alarm setpoints via Bently Nevada System 1 or rack configuration software
- High measurement resolution for early detection of rotor position anomalies
- Proven field reliability across 30+ years of global industrial deployments
System Architecture & Signal Flow
The 3500/45 module occupies a single slot in the 3500 rack. Proximitor sensors (eddy-current type) connect via extension cables to the module’s front-panel BNC/terminal inputs. The module conditions the raw proximity signal, applies configured gap voltage compensation, and computes position in engineering units (mils or mm). Processed values are transmitted over the rack TDI backplane to the 3500/20 rack interface module for DCS integration, while relay outputs directly drive trip logic or annunciator panels. The 4–20 mA outputs provide continuous analog feedback to control room instrumentation.
Sourcing & Quality Verification
- Units sourced from decommissioned plant upgrades, certified OEM spares pools, and authorized distributors
- Each module undergoes visual inspection, functional bench test, and firmware version verification prior to shipment
- Original Bently Nevada labeling, part number, and revision markings verified
- Packaging: anti-static ESD bag + foam-lined carton with desiccant
- Certificate of conformance available upon request
- 90-day functional warranty included as standard
Procurement Process
- Submit your inquiry with required quantity and delivery timeline to support@konmask.com
- Receive stock confirmation and proforma invoice within 1 business day
- Payment via T/T, PayPal, or trade finance terms (for qualified accounts)
- Dispatch within 3–5 business days; express DHL/FedEx available
- Tracking number and commercial invoice provided upon shipment
- Post-delivery technical support available via email or WhatsApp
Technical FAQ
Q: Is the 176449-04 revision compatible with all 3500 rack configurations?
A: Yes. The 3500/45 module is backward-compatible with all standard 3500 rack frames. Verify rack firmware version ≥ 3.xx for full feature support.
Q: Can this module replace a 3500/45E or earlier revision?
A: Physical form factor is identical. Configuration parameters may differ — consult your Bently Nevada System 1 configuration file before hot-swap replacement.
Q: What transducer gap voltage range is supported?
A: The 3500/45 supports standard Bently Nevada proximitor gap voltages of -2 VDC to -18 VDC, compatible with 3300 XL and 7200 Series proximitor systems.
Q: Is calibration required after installation?
A: The module is factory-calibrated. Field verification of gap voltage and scale factor against the proximitor datasheet is recommended after installation.
Q: Do you provide export documentation for international shipments?
A: Yes — commercial invoice, packing list, and certificate of origin are standard. ECCN classification and export license support available upon request.
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