Bently Nevada 990-04-XX-01-00 – Vibration Transmitter | 3500 Series Platform
Engineering Background
The Bently Nevada 990 Series Vibration Transmitter is a field-proven, loop-powered transducer interface designed for continuous machinery health monitoring in critical rotating equipment applications. Engineered to interface directly with proximity probes (eddy-current sensors), it converts raw displacement or vibration signals into industry-standard 4–20 mA analog outputs compatible with any DCS, PLC, or safety system.
Product Positioning
The 990-04-XX-01-00 (part number 165335-01) is the standard 4-wire, loop-powered variant optimized for integration into Baker Hughes / Bently Nevada 3500 Series rack-based machinery protection systems. It is the preferred choice for procurement engineers specifying turbine, compressor, pump, and motor monitoring solutions in oil & gas, power generation, and petrochemical facilities.
Complete Technical Specifications
- Manufacturer: Bently Nevada (Baker Hughes)
- Part Number: 990-04-XX-01-00
- Reference P/N: 165335-01
- Series / Platform: 3500 Machinery Protection System
- Device Type: Vibration / Displacement Transmitter
- Output Signal: 4–20 mA (loop-powered)
- Input Compatibility: Bently Nevada 3300 XL / 7200 Series Proximity Probes
- Supply Voltage: 18–30 VDC
- Operating Temperature: –40°C to +85°C
- Enclosure Rating: IP66 / NEMA 4X
- Hazardous Area Certification: ATEX / IECEx (consult datasheet for zone classification)
- Mounting: DIN rail or panel mount
- Weight: 1,230 g (approx.)
- Communication Protocol: Analog 4–20 mA; compatible with HART overlay (model-dependent)
- Compliance: CE, RoHS
Proven Application Environments
- Gas turbine and steam turbine shaft vibration monitoring
- Centrifugal compressor radial and axial displacement measurement
- High-speed pump and motor bearing condition monitoring
- Petrochemical plant rotating machinery protection
- Power generation critical asset surveillance
- Offshore platform machinery health systems
Engineering Advantages
- Direct 3500 Rack Integration: Plug-and-play compatibility with Bently Nevada 3500 Series I/O modules eliminates signal conditioning overhead.
- Loop-Powered Design: Simplifies field wiring; no separate power supply required at the transmitter head.
- Wide Temperature Range: Qualified for both arctic and high-ambient industrial environments.
- Hazardous Area Rated: ATEX/IECEx certification supports deployment in Zone 1/2 classified areas.
- High Signal Fidelity: Low-noise analog output ensures accurate vibration amplitude and phase data for machinery diagnostics.
- Robust Enclosure: IP66/NEMA 4X rating withstands washdown, dust, and corrosive atmospheres.
System Architecture & Signal Flow
The 990-04-XX-01-00 sits between the proximity probe tip and the 3500 rack monitor card. Signal flow: Rotating shaft → Eddy-current proximity probe → 990 Transmitter (signal conditioning + 4–20 mA conversion) → 3500 Monitor Card → DCS/Safety System. The transmitter provides galvanic isolation and linearization, ensuring the downstream control system receives a clean, calibrated analog signal regardless of cable run length or electrical noise environment.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified surplus channels with full traceability documentation.
- Each unit undergoes incoming inspection: visual check, label verification (P/N, date code, revision), and functional bench test where applicable.
- Original factory packaging preserved where available; anti-static and moisture-barrier packaging applied for all shipments.
- Certificate of Conformance (CoC) and test reports available upon request.
- Counterfeit-prevention protocol: serial number cross-referenced against manufacturer records prior to dispatch.
Procurement Process
- Confirm Part Number: Verify 990-04-XX-01-00 / 165335-01 matches your BOM or existing installation revision.
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and CoC availability.
- Order Placement: Purchase directly via this listing or via PO to our sales team.
- Shipping: DHL / FedEx express worldwide; export documentation (commercial invoice, packing list, HS code 9026.80) included.
- After-Sales Support: 12-month warranty on verified units; technical support available via email or phone.
Technical FAQ
Q: Is the 990-04-XX-01-00 compatible with non-Bently Nevada DCS systems?
A: Yes. The 4–20 mA output is universal and connects to any analog input card. The 3500 rack is only required for the full machinery protection feature set.
Q: What proximity probe gap voltage range does this transmitter accept?
A: Typically –2 VDC to –18 VDC (Bently Nevada standard). Confirm with the specific probe datasheet for your installation.
Q: Can I use this transmitter for axial position (thrust) monitoring?
A: Yes, provided the paired proximity probe and extension cable are configured for position measurement and the 3500 monitor card is set accordingly.
Q: Do you provide calibration certificates?
A: Factory calibration data is available for new units. For surplus units, third-party calibration can be arranged upon request.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. Contact us for current availability.
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