Bently Nevada 130944-01 / 128275-01F – Proximitor Monitor Module | 3300 Series Platform
Engineering Background
The Bently Nevada 3300 Series represents decades of field-proven machinery protection technology deployed across power generation, oil & gas, petrochemical, and heavy industrial facilities worldwide. The 130944-01 monitor module, paired with the 128275-01F Proximitor® sensor interface, forms a precision signal-conditioning and monitoring assembly designed to detect shaft vibration, position, and dynamic motion in rotating equipment — delivering real-time protection data to plant DCS and safety systems.
Product Positioning
This module is the preferred choice for procurement engineers maintaining or expanding Bently Nevada 3300 Series racks. It provides a direct, specification-matched replacement or expansion card for existing installations, eliminating re-engineering costs and minimizing downtime during maintenance windows. Konmask.com supplies this unit from verified industrial surplus and authorized distribution channels, with full traceability documentation available on request.
Complete Technical Specifications
| Part Number (Monitor) | 130944-01 |
| Part Number (Proximitor) | 128275-01F |
| Platform / Series | Bently Nevada 3300 Series |
| Module Type | Proximitor® Monitor Module |
| Measurement Function | Shaft radial vibration, axial position, eccentricity |
| Input Signal | Eddy-current proximity probe (Proximitor® output, –24 VDC bias) |
| Output Signal | 4–20 mA analog, relay contact outputs (OK / Alert / Danger) |
| Supply Voltage | +24 VDC (rack-supplied) |
| Operating Temperature | 0 °C to +65 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 5% to 95% RH, non-condensing |
| Form Factor | Single-slot 3300 rack card |
| Weight | 500 g (approx.) |
| Certifications | CE, FM, CSA (per original OEM certification) |
| Communication | Rack backplane (3300 Series bus) |
Proven Application Environments
- Power Generation: Steam turbine and gas turbine shaft monitoring in utility and co-generation plants
- Oil & Gas: Compressor and pump protection on upstream and midstream installations
- Petrochemical / Refining: Continuous monitoring of critical rotating machinery per API 670 requirements
- Pulp & Paper / Mining: Fan, blower, and gearbox vibration surveillance
- Marine & Offshore: Propulsion and auxiliary machinery protection systems
Engineering Advantages
- Direct OEM Replacement: Plug-in compatible with existing 3300 Series racks — no firmware changes or re-wiring required
- Dual Part-Number Assembly: 130944-01 monitor + 128275-01F Proximitor interface shipped as a matched pair, reducing integration risk
- High-Resolution Measurement: Eddy-current technology provides non-contact, wear-free shaft measurement with sub-micron sensitivity
- Configurable Alarm Thresholds: Alert and Danger setpoints adjustable via front-panel or system software
- Fail-Safe Relay Logic: De-energize-to-trip relay architecture ensures safe state on power loss or module fault
- Rack-Level Redundancy Ready: Compatible with 3300 Series redundant rack configurations
System Architecture & Signal Flow
The proximity probe (eddy-current type) is mounted adjacent to the rotating shaft. The 128275-01F Proximitor® conditions the raw probe signal, providing a calibrated DC voltage proportional to gap distance. This conditioned signal feeds into the 130944-01 monitor card, which performs:
- Signal filtering and integration (velocity / displacement conversion)
- Peak-to-peak and DC gap measurement
- Comparison against programmed Alert and Danger thresholds
- Relay actuation and 4–20 mA analog output to DCS/SCADA
- Status reporting via 3300 rack backplane to the System 1 software platform
Sourcing & Quality Verification
- Source: Industrial surplus, authorized distribution, and OEM-certified refurbishment channels
- Inspection: Each unit undergoes visual inspection, board-level cleaning, and functional verification prior to shipment
- Traceability: Serial number and revision documentation available; certificate of conformance (CoC) provided on request
- Warranty: 12-month operational warranty against manufacturing defects
- Packaging: ESD-safe anti-static bag, foam-lined carton, with desiccant for international shipments
Procurement Process
- Inquiry: Submit your RFQ via the product page or email support@konmask.com with quantity and required delivery date
- Quotation: Receive a formal quotation within 1 business day, including lead time and CoC availability
- Order Confirmation: Purchase order accepted via email, Alibaba Trade Assurance, or direct Shopify checkout
- Inspection & Dispatch: Unit inspected, photographed, and dispatched within 2–5 business days
- Shipping: DHL / FedEx / UPS express available; sea freight for bulk orders; export documentation included
- After-Sales: Technical support available post-delivery; returns accepted within 30 days for DOA units
Technical FAQ
Q: Is the 130944-01 compatible with the 3500 Series rack?
A: No. The 130944-01 is designed exclusively for the 3300 Series rack architecture. For 3500 Series applications, a different module family is required.
Q: Can this module be used with non-Bently Nevada proximity probes?
A: The 128275-01F Proximitor® is calibrated for Bently Nevada 3300 Series probes. Use with third-party probes may require recalibration and is not recommended without engineering review.
Q: What is the difference between the 128275-01F and earlier Proximitor revisions?
A: The “-01F” suffix denotes a specific hardware revision with updated EMI filtering and improved temperature stability. It is backward-compatible with earlier 3300 Series installations.
Q: Do you provide functional test reports?
A: Yes. Functional test reports and CoC documents are available upon request for quality-critical procurement.
Q: What is the lead time for bulk orders (5+ units)?
A: Lead time for bulk orders is typically 7–15 business days depending on stock availability. Contact us for a dedicated bulk quotation.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
