Bently Nevada 3500/25 Enhanced Keyphasor Module – 3500 Series Machinery Protection System
Imagine a critical rotating machine — a turbine, compressor, or pump — running at full load with no reliable phase reference signal. Without an accurate Keyphasor input, your vibration analysis becomes guesswork, your balancing procedures lose precision, and your protection system cannot distinguish between a transient event and a genuine fault. Unplanned shutdowns follow, and the cost of a single catastrophic failure dwarfs years of maintenance budgets. The Bently Nevada 3500/25 Enhanced Keyphasor Module exists precisely to prevent this scenario.
The 3500/25 is the dedicated Keyphasor interface card within the industry-standard Bently Nevada 3500 Series modular machinery protection system. It accepts signals from proximity probes or magnetic pickups mounted on rotating shafts, converts them into precise once-per-revolution timing pulses, and distributes that phase reference to every monitoring module in the rack. Trusted by petrochemical plants, power generation facilities, and heavy industrial operators worldwide, the 3500/25 is a foundational component in any API 670-compliant protection architecture.
Technical Specifications
- Model / SKU: 3500/25
- Series: Bently Nevada 3500 Series Machinery Protection System
- Module Type: Enhanced Keyphasor Module
- Manufacturer: Bently Nevada (Baker Hughes)
- Form Factor: Single-slot 3500 rack card
- Input Signal Types: Eddy-current proximity probes; magnetic (variable-reluctance) pickups
- Keyphasor Channels: 2 independent Keyphasor inputs per module
- Output: Keyphasor reference distributed to all monitoring modules in the same rack via backplane
- Speed Range: Supports a wide RPM range suitable for turbines, compressors, pumps, and motors
- Communication: Backplane integration with 3500 rack; compatible with 3500/92 communication gateway for Modbus/TCP and other protocols
- Power Supply: Powered via 3500 rack backplane
- Standards Compliance: Designed for API 670 machinery protection applications
- Weight: Approx. 460 g
Key Features & Benefits
- Dual-channel Keyphasor inputs — Provides redundancy and flexibility for complex machine trains requiring multiple phase references.
- Enhanced signal conditioning — Accepts both proximity probe and magnetic pickup signals, eliminating the need for external signal converters.
- Backplane phase distribution — Automatically shares the Keyphasor reference with all monitoring modules in the rack, simplifying wiring and reducing installation errors.
- Plug-and-play rack integration — Slots directly into any standard 3500 rack without additional hardware, minimizing commissioning time.
- Enables advanced vibration analysis — Provides the phase reference required for 1X/2X vector analysis, orbit plots, and dynamic balancing.
- API 670 compliant architecture — Supports compliance with international machinery protection standards for critical rotating equipment.
- Long-term availability — Konmask.com maintains stock of both new and tested-serviceable 3500/25 modules to support legacy and active installations.
Industry & Equipment Applications
- Oil & Gas: Centrifugal compressors, gas turbines, steam turbines on upstream and downstream platforms
- Power Generation: Steam and gas turbine-generator sets requiring continuous phase monitoring
- Petrochemical & Refining: Process compressors and pumps in API 670-mandated protection systems
- LNG Plants: Main refrigerant compressor trains where phase accuracy is critical for safe operation
- Marine & Offshore: Propulsion turbines and auxiliary rotating machinery
- General Heavy Industry: Any high-speed rotating equipment requiring vibration vector analysis and dynamic balancing
System Integration & Compatible Parts
The 3500/25 is designed to operate within the Bently Nevada 3500 Series ecosystem. Typical companion modules include:
- 3500/15 – Power Supply Module (rack power)
- 3500/20 – Rack Interface Module (RIM) for system communication
- 3500/22M – Transient Data Interface (TDI) for waveform capture
- 3500/40M – Proximitor/Seismic Monitor (radial vibration)
- 3500/42M – Proximitor/Seismic Monitor (axial position & radial vibration)
- 3500/45 – Position Monitor
- 3500/92 – Communication Gateway Module (Modbus/TCP, Ethernet)
- 3500/93 – TMR Communication Gateway
If you are building or expanding a 3500 rack, our team can assist with complete BOM verification to ensure all modules are compatible with your existing rack revision and firmware baseline.
Our Quality Assurance Process
Every Bently Nevada 3500/25 module shipped from Konmask.com undergoes a structured quality verification process:
- Visual inspection: PCB, connectors, and housing checked for physical damage, corrosion, or counterfeit indicators
- Functional verification: Module powered and tested for correct Keyphasor signal conditioning and backplane communication
- Traceability documentation: Serial number recorded; original manufacturer labels verified where present
- Secure packaging: ESD-safe anti-static bags, foam cushioning, and double-wall carton for international shipment
- Warranty: 12-month warranty against defects in materials and workmanship
How to Order
- Submit an inquiry via the Contact / Request a Quote form on this page, or email support@konmask.com.
- Provide your required quantity, delivery timeline, and any specific firmware or revision requirements.
- Our team will confirm availability, lead time, and issue a formal quotation within 1 business day.
- Upon PO confirmation, we arrange shipment via DHL / FedEx / UPS with full tracking and export documentation.
Why Choose Konmask.com?
- Industrial automation specialists — We focus exclusively on DCS, PLC, and machinery protection components from leading global brands.
- Verified stock — No drop-shipping; modules are physically inspected before dispatch.
- Fast global shipping — Export-ready from China with DHL Express; most orders ship within 3–5 business days.
- Technical support — Our engineers can assist with rack configuration, module compatibility, and installation guidance.
- Competitive pricing — Direct sourcing relationships allow us to offer market-competitive pricing on both new and serviceable units.
- Trusted by B2B buyers worldwide — Serving MRO teams, EPC contractors, and plant maintenance engineers across 40+ countries.
Frequently Asked Questions
- Q: What is the difference between the 3500/25 and the standard Keyphasor module?
- A: The 3500/25 is the “Enhanced” Keyphasor Module, offering dual-channel inputs and compatibility with both proximity probes and magnetic pickups, providing greater flexibility compared to earlier single-channel Keyphasor cards in the 3500 platform.
- Q: Can the 3500/25 be used in a TMR (Triple Modular Redundant) rack?
- A: The 3500/25 is designed for standard 3500 racks. For TMR applications, please consult our team to confirm the correct module variant and rack configuration for your redundancy requirements.
- Q: Do you supply new or refurbished units?
- A: We supply both new (factory-sealed where available) and tested-serviceable units. The condition is clearly stated in your quotation. All units pass our QA process regardless of condition grade.
- Q: What is the lead time for the 3500/25?
- A: In-stock units typically ship within 3–5 business days after PO confirmation. For out-of-stock situations, lead time is quoted individually based on sourcing. Contact us for real-time availability.
- Q: Can you provide export documentation and certificates of conformance?
- A: Yes. We provide commercial invoices, packing lists, and certificates of conformance upon request. Country-specific export documentation can be arranged for most destinations.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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