Product Description
The Bently Nevada 3500/42-06-00 is an advanced 4-channel Proximitor Seismic Monitor designed for continuous machinery protection. This 3500 Series module processes high-accuracy dynamic data from proximity probes, velocity sensors, or accelerometers. By comparing processed variables against active hardware alarms, it prevents sudden rotating equipment failure. The 3500/42-06-00 variant features integrated internal safety barriers and internal terminations, specifically engineered for 4 x Velomitor inputs without external hardware requirements.
Configuration & Part Number Breakdown
3500/42 - Proximitor Seismic Monitor
|
├── [06] I/O Module Type
│ └── Internal Barriers & Internal Terminations
│ └── Optimized for 4 x Velomitor Transducers
│
└── [00] Hazardous Area Approval Option
└── None (Standard unclassified zone installation)
Technical Specifications
| Core Parameter | Technical Specification Limit |
|---|---|
| Manufacturer & Origin | Bently Nevada (Made in U.S.A) |
| Model Number | 3500/42-06-00 |
| Input Impedance | 10 kΩ for standard Proximitor and acceleration inputs |
| Radial & Thrust Sensitivity | 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil) |
| Velocity Sensitivity | 20 mV/(mm/s) pk, 5.8 mV/(mm/s) pk, or 4 mV/(mm/s) pk |
| Direct Filter Response | Single-pole -3dB at 4 Hz to 4000 Hz or 1 Hz to 600 Hz |
| Static Channel Accuracy | Within ±0.33% of full-scale typical, ±1% maximum limit |
| Analog Recorder Outputs | Individual +4 to +20 mA outputs per channel, 600 Ω max load |
| Buffered Output Impedance | 550 Ω front panel coaxial, short-circuit protected |
| Power Consumption | 7.7 watts typical rack power consumption |
Oiltech Controls Limited’s Insight
From an instrument engineering perspective, the 3500/42-06-00 is an interesting module because it targets internal barrier loops directly on the rear I/O. By opting for the 06 I/O type, you combine safety-barrier protection and internal terminations on a single card, which saves significant cabinet space. However, field engineers must note that under strong radiated radio-frequency interference, Velomitor accuracy on this specific internal-barrier card can exhibit an additional ±11% error. We advise strict compliance with shielded cabling standards inside the rack enclosure to isolate these signals.
Target Machinery, Applications & Diagnostic Capabilities
- Target Equipment: Heavy industrial steam turbines, centrifugal gas compressors, high-speed pumps, and electric motors.
- Application Scenarios: Fluid-film bearing oil whip tracking, casing vibration protection, and structural resonance verification.
- Advanced Diagnostics: Real-time 1X and 2X discrete vector tracking via constant Q notch filters with -57.7 dB stopband rejection.
- Signal Conditioning: Dedicated processing for Smax, Eccentricity, REBAM rolling-element monitoring, and Shaft Absolute measurements.
Shipping, Logistics & 12-Month Warranty Terms
- Package Inclusions: Every order contains one factory-tested Bently Nevada 3500/42M monitor card and its paired 06 rear I/O module.
- 12-Month Warranty: Oiltech Controls covers this industrial hardware with a comprehensive 1-year replacement warranty against manufacturing defects.
- Global Express Logistics: We dispatch all international shipments via premium couriers including FedEx, UPS, and DHL for fast customs clearance.
Frequently Asked Questions & Selection Guide
- What specific advantage does the 06 I/O option provide over the standard 01 or 02 options?
The 06 option integrates internal safety barriers directly on the rear card board. This removes the need for separate external Zener barriers when running cables out to hazardous areas. - Can I use standard 3-wire proximity probes on the 3500/42-06-00 module?
No, the 06 option is specifically hardware-configured and optimized for 4 x Velomitor transducers. For mixed proximity and seismic sensor loops, you should select the standard 01 or 04 configurations. - How does the monitor behave during a field sensor line-fault or short circuit?
The monitor triggers a Not OK status flag and illuminates the front panel LED. The individual +4 to +20 mA analog recorder outputs remain completely unaffected by field short circuits. - What is the proper procedure for hot-swapping this card during plant operations?
You can safely insert the main board into a live 3500 rack. However, ensure that the bypass LED is active or that external trip interlocks are temporarily inhibited to prevent a false trip. - Does this module provide vector tracking for high-speed balancing verification?
Yes, it features constant Q filters for 1X and 2X vector tracking. These filters remain valid across an expansive machine operating speed range from 60 cpm up to 100,000 cpm.
Technical Documentation Download
Ensure correct loop drawings and sensor wiring schematics before doing field installation work:
- Reach out to our engineering office to get the latest 3500 Series calibration data sheets.
- For direct pricing or formal RFQ details, send an email to info@oiltechcontrols.com.
- Start an instant chat with our technical support engineers on WhatsApp at +86 158 8020 0923.
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